VOLUME NR5
INORGANIC CHEMISTRY
UDK.541.123.3
B. B. Akhmedov1, J. S. Shukurov2
POLYTHERMIC SOLUBILITY OF THE SYSTEM HOOC-COOH •NH2C2H4OH - [10% C10H11ClN4 + 90%C2H5OH] – H2O
1Samarkand State University named after Sh. Rashidov, 2AS RUz Institute of General and Inorganic Chemistry E-mail: bakhtiyor.akhmedov.11@gmail.com
Abstract. Background. The synthesis of effective drugs that exhibit both stimulating and insecticidal effects and the study of the mechanisms of their action on agricultural crops is of current interest.
Purpose. obtaining physiologically active drugs with insecticidal properties, studying the interaction of components consisting of monoethanolammonium oxalate, acetamiprid and ethanol.
Methodology. Thermometers TN-6 and TL-15 were used. Carbon and hydrogen were analyzed by elemental analysis methods (Zeiss EVO MA10).
Originality. The interaction of components consisting of monoethanolammonium oxalate, acetamiprid, and ethanol has been studied; on their basis, polythermal solubility diagrams have been constructed.
Findings. A polythermal solubility diagram for the HOOC-COOH•NH2C2H4OH–[10%C10H11ClN4 + 90%C2H5OH]–H2O system was plotted in the temperature range from –4°С to 26.8°С.
Key words: solubility, system, diagram, concentration, "composition-property", crystallization temperature, insecticide, stimulant.
Highlights:
- interaction of water, oxalic acid dihydrate and urea;
- built polythermal diagram of the solubility of the system.
References
1. Zoumenou, B.G.Y.M., Aïna, M.P., Imorou Toko, I. et al. Occurrence of Acetamiprid Residues in Water Reservoirs in the Cotton Basin of Northern Benin. Bull Environ ContamToxicol 102, 7–12 (2019). DOI:10.1007/s00128-018-2476-4.
2. Ishaaya I, Barazani A, Kontsedalov S, Horowitz AR (2007) Insecticides with novel modes of action: Mechanism, selectivity and cross-resistance. Entomol Res 37:148–152. DOI:10.1111/j.1748-5967.2007.00104.x
3. N. Simon-Delso & V. Amaral-Rogers & L. P. Belzuncesand and others. Systemic insecticides (neonicotinoids and fipronil): trends, uses, mode of action and metabolites// Environ Sci Pollut Res Int. 2015; 22(1): 5–34. Published online 2014 Sep 19. DOI: 10.1007/s11356-014-3470-y
4. Singh, S., Kulshrestha, G. Residues of Thiamethoxam and Acetamaprid, Two Neonicotinoid In secticides, in/on Okra Fruits (Abelmoschus esculentusL). Bull Environ ContamToxicol 75, 945–951 (2005). DOI:10.1007/s00128-005-0841-6
5. Shi, Z., Dong, W., Xin, F.et al. Characteristics and metabolic pathway of acetamiprid biodegradation byFusariumsp. strain CS-3 isolated from soil. Biodegradation 29, 593–603 (2018). DOI:10.1007/s10532-018-9855-8
6. Macfadyen S, Hardie DC, Fagan L, Stefanova K, Perry KD, et al. (2013) Reducing insecticide use in broad-acre grains production: an Australian study. v1. CSIRO. Data Collection. DOI: 10.4225/08/52B24099AC7D7.
7. E. S. Khusanov, J. S. Shukurov, A. S. Togasharov, S. Tukhtaev study of the solubility of components in a system H3PО4 ∙ CО(NH2)2 - NH(C2H4ОH)2 - H2О // Uzbek chemical journal.-Tashkent, -2022. –N2. -P.9-14. (in Russian).
8. Zh.S. Shukurov, E.S. Khusanov, M.Sh. Mukhitdinova, A.S. Togasharov. Componentsolubilities in the acetic acid–monoethanolamine–water system// Russian Journal of Inorganic Chemistry. – Moscow, -2021. -Vol. 66. -No. 6. -P. 807-813. DOI: 10.31857/S0044457X21060179 (in Russian).
9. Wang G, Zhao Y, Gao H, Yue W, Xiong M, Li F, Zhang H, Ge W. Co-metabolic biodegradation of acetamiprid by Pseudoxanthomonas sp. AAP-7 isolated from a long-term acetamiprid-polluted soil. // Bioresour Technol. -2013. N150. P.259–265. DOI:10.1016/j.biortech.2013.10.008
10. Zh.Sh. Bobozhonov, Zh.S. Shukurov, A.S. Togasharov, M.Kh. Akhmadzhonova. Study of Solubility of Ca(ClO3)2–[90% C2H5OH +10% C10H11ClN4]–H2O System// Russian Journal of Inorganic Chemistry. – Moscow, -2021. -Vol. 66. -No. 7. -pp. 1033-1037 (in Russian).
11. Varga-Szilay, Z., Tóth, Z. Is acetamiprid really not that harmful to bumblebees (Apidae: Bombus spp.)?. Apidologie 53, 2 (2022). DOI:10.1007/s13592-022-00909-6 .
12. Gupta, S., Gajbhiye, V.T. Persistence of Acetamiprid in Soil. Bull Environ Contam Toxicol 78, 349–352 (2007). DOI:10.1007/s00128-007-9097-7.
13. Trunin A.S. Petrova D.G. Visual-polythermal method / Kuibyshev Polytechnic. Inst. - Kuibyshev.: 1977, - 94 p. Dep. in VINITI No. 584-78. (in Russian).
To cite this article: B. B. Akhmedov, J. S. Shukurov. Polythermic solubility of the system HOOC-COOH •NH2C2H4OH - [10% C10H11ClN4 + 90%C2H5OH] – H2O // Uzbek chemical journal. -2022. – Nr5. - Pp.3-7.
Received: 27.09.2022; Accepted: 18.10.2022; Published: 24.10.2022
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UDK 669.849
S. N. Rasulova, U. N. Ruziev, V. P. Guro, R. D. Allabergenov, A. B. Ibragimov
SOME ASPECTS OF TECHNOLOGICAL PROGRESS IN THE HYDROCHEMISTRY OF RHENIUM-CONTAINING TECHNOGENIC RAW MATERIALS
1AS RUz Institute of General and Inorganic Chemistry, 2Scientific and Production Association "Production of rare metals and hard alloys" JSC "Almalyk MMC"
Abstract. Background. The sludge fields of SPA PRMiTS of Almalyk MMC JSC are a kind of technogenic deposit of rare metals, including rhenium. Another type of technogenic Re-containing raw materials is waste solutions of the plant.
Purpose: development of a complex technology for the processing of technogenic rhenium-containing raw materials, in addition to rhenium, other rare or non-ferrous metals.
Methodology. Hydrogen peroxide was used as oxidants, objects were sulfidized with sodium sulfide solutions, ion-exchange and extraction schemes were used, elemental analysis was performed on AAS Perkin-Elmer 3030B and Agilent 7500 IСP.
Originality. Based on the analysis of samples of technogenic rhenium-containing wastes of the plant, new schemes for complex technologies for its processing are proposed. New approaches to the selective isolation of rhenium from industrial technological solutions based on the precipitation of poorly soluble rhenium compounds are proposed.
Findings. Existing and prospective ion-exchange and extraction methods for the separation of rhenium and molybdenum were tested. Data on the precipitation of Re(VII) from nitrate Mo-containing solutions are presented.
Key words: industrial waste, molybdenum, rhenium, oxidant, ion exchange resin, extraction
Highlights:
- proposed schemes of technological processes for the extraction of rhenium;
- the precipitation of Re in the form of poorly soluble compounds was studied;
- ways to extract rhenium based on extraction and ion exchange methods.
References
1. Roman DAllabergenov, Vitaliy P. Guro, Sitorabonu N Rasulova, Edgor T. Safarov, Khayitali F. Adinaev. Regulations of oxidation of rhenium heptasulphideAt rheniumconcentrate processing. //Journal of Chemical Technology and Metallurgy, 56, 6, 2021. 1279-1284.
2. S. N. Rasulova, V. P. Guro, R. D. Allabergenov. Method for recovery rhenium from the tailing dump of research-and-production association of Аlmalyk GMK JSC (former UZKTZHM).// 10th International Symposium on Technetium and Rhenium – Science and Utilization.- Moscow. -2018.-P. 331-332.
3. Allabergenov R.D., Sharipov Kh.T., Guro V.P. Scientific and practical. Conference "Modern problems and innovative technologies for solving the issues of processing man-made deposits of the Almalyk MMC" - Almalyk. -2019. -p.112. (in Russian)
4. R.D. Allabergenov, S.N. Rasulova, V.P. Guro, U.N. Ruziev. Extraction of rhenium from the tailing dump of NPO Almalyk MMC JSC. //Uzb. chem. and. - 2018. -№3.- C. 22-29. (in Russian)
5. Mal’tseva, E.E., Blokhin, A.A., Pleshkov, M.A., Murashkin, Yu.V., and Mikhaylenko, M.A. Sorption recovery of rhenium in hydrometallurgical processing of molybdenite concentrates using Purolite A170 and Purolite A172 weakly basic anion-exchange resins, Tsvetn. Met., -2014.-No. 6,-Pp. 52–58.
6. Alina Zagorodnyaya, ZineshAbisheva, AinashSharipova, SaltanatSadykanova& Ata Akcil (2015). Regularities of Rhenium and Uranium Sorption from Mixed Solutions with Weakly Basic Anion Exchange Resin, Mineral Processing and Extractive Metallurgy Review. //An International Journal. -36:6, 391-398, DOI: 10.1080/08827508.2015.1039165.
7. Turanov, A.N., Karandashev, V.K., Kalashnikova, I.P. et al. Extraction and sorption preconcentration of rhenium with the use of 2-phosphorylphenoxyacetamides. //Russ. J. Inorg. Chem. -62, 1252–1256 (2017). https://doi.org/10.1134/S0036023617090170
8. Milusheva M.A. Extraction of molybdenum and rhenium from solutions of nitric-sulfuric acid leaching of molybdenum concentrates. //"Integrated use of mineral raw materials": 1986.- No. 11.-S.53-55. (in Russian)
9. Palant A.A., Troshkina I.D. Chekmarev A.M. Metallurgy of rhenium. -M.: "Nauka", 2007. -187 p. (in Russian)
10. Khoshnevisan, A., Yoozbashizadeh, H., Mohammadi, M. et al. Separation of rhenium and molybdenum from molybdenite leach liquor by the solvent extraction method. //Mining, Metallurgy&Exploration 30, 53–58 (2013). https://doi.org/10.1007/BF03402341\
11. Amer, A. The hydrometallurgical extraction of rhenium from copper industrial wastes. JOM 60, 52–54 (2008). https://doi.org/10.1007/s11837-008-0108-x
12. Giganov G.P., Giganov V.G. Investigation of the extraction of rhenium and tungsten from solutions from the leaching of tungsten-rhenium alloys // Tsvetnaya metallurgy. -2008.-No. 11.-S. 17. (in Russian)
13. Antonov A.V., Kubasov V.L., Ishchenko A.A. Extraction methods in rhenium technology // Tsv. metallurgy.-2006.-№ 1.-p. 6-12. (in Russian)
14. Antonov A.V., Kubasov V.L., Ishchenko A.A. Extraction methods in rhenium technology // Tsv. Metallurgy. - 2006. - No. 2. - P. 21-27. (in Russian)
15. C.N. Rasulova, V.P. Guro, R.D. Allabergenov, U.N. Ruziev Mud processing NPO Almalyk MMC is a cost-effective and environmentally friendly project. //VII International Scientific and Practical Conference “Problems of rational use and protection of natural resources of the southern Aral Sea region” - Nukus. - July 17-18, 2018 - 146-147p. (in Russian)
16. S.B. Lyapin, V.P. Guro, N.A. Parpiev, S.N. Rasulov. Photometric determination of rhenium in mixed hydrochloric-nitric acid solutions of molybdenite concentrate processing. Factory laboratory. Diagnostics of materials.- 2020.-T.86 N2. 23-29 c. DOI: https://doi.org/10.26896/1028-6861-2020-86-2-23-29.- (in Russian)
17. Kim, H.S., Parka, J.S., Seo, S.Y., Trana, T., and Kima, M.J., Recovery of rhenium from a molybdenite roaster fume as high purity ammonium perrhenate. //Hydrometallurgy.- 2015.-Vol. 156. -Pp. 158–164.
18. Abisheva, Z.S., Zagorodnya, A.N., Sadykanova, S.E., Bobrova, V.V., Sharipova, A.S., Sorption technology for recovery of rhenium from uranium-containing solutions using weakly basic anion exchangers. //Complexnoe ispolzovanie mineralnogo syrya.-2011а,3,8-16.
19. Maltseva, E.E., Blokhin, A.A., Murashkin, Y.V. et al. An increase in purity of ammonium perrhenate solutions with respect to molybdenum(IV) with the sorption recovery of rhenium(VII) from Mo-containing solutions. //Russ. J. Non-ferrousMetals. 58, 463–469 (2017). https://doi.org/ 10.3103/S1067821217050091
20. Bekbutaeva N.N., Sharipov Kh.T., Lukomskaya G.A., Tashaliev F.U., Saparov A.R. Extraction of molybdenum from sulfuric acid mother liquors after sorption of rhenium // Universum: technical sciences: electronic scientific journal.-2021-Issue 12(93).URL:http: //7universum.com/ru/tech. (in Russian)
21. Shodiev A.N., Khamidov S.B., Turobov Sh.N. Study of the sorption technology for extracting molybdenum and rhenium from waste // Universum: technical sciences: electron.nauchn. journal - 2020. 11(80). URL: ttps://7universum.com/ru/tech/archive/item/ 10938 (in Russian)
To cite this article: S. N. Rasulova, U. N. Ruziev, V. P. Guro, R. D. Allabergenov, A. B. Ibragimov. Some aspects of technological progress in the hydrochemistry of rhenium-containing technogenic raw materials // Uzbek chemical journal. -2022. – Nr5. - Pp.7-15.
Received: 08.06.2022; Accepted: 11.07.2022; Published: 24.10.2022
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UDK 544.653.22; 669.27.054.85
U. N. Ruziev, S. N. Rasulova, V. P. Guro, A. Б. Ibragimov, M. A. Ibragimova, I. Y. Chorieva
TECHNOLOGY OF ELECTROCHEMICAL WASTE PROCESSING HARD ALLOYS WITH TUNGSTEN AND COBALT REGENERATION
1AS RUz Institute of General and Inorganic Chemistry, 2Scientific and Production Association "Production of rare metals and hard alloys" JSC "Almalyk MMC"
Abstract. Background. Waste from the production of products from hard alloys (TS) of the VK group is subject to processing, with the regeneration of tungsten and cobalt.
Purpose: development of a technology for the electrolysis processing of metal wastes of hard alloys of the VK type in electrolyte solutions based on ammonia.
Methodology. The object of the study is a waste of hard alloy of the VK-6 type of SPA PRMiHA of Almalyk MMC JSC. Electrochemical measurements were performed on a PI-50-1 laboratory potentiostat and in an electrolysis unit, from a 6 dm3 bath with an open top, a direct current source.
Originality. A technological scheme of an electrochemical method for the regeneration of tungsten and cobalt from powder metallurgy waste has been developed. The optimal conditions for the anodic dissolution of tungsten in an ammonia electrolyte with additives are established, the best of which is recognized as ammonium nitrate.
Findings. Balance experiments were carried out on the developed electrochemical technology for the regeneration of tungsten and cobalt from hard alloy waste. Ammonium paratungstate was isolated from a solution of ammonium tungstate with a parka. The voltage at the terminals of the electrolyzer is 6-8 V, at a current load of 840 A.
Key words: hard alloys, tungsten, cobalt, impact crushers, sludge, ammonia, roasting, CoS, tungsten anhydride.
Highlights:
- dissolution of waste of hard alloys of the VK group in ammonia electrolyte;
- addition of tungstic acid in ammonia electrolyte;
- addition of chloride and ammonium nitrate in ammonia electrolyte;
- the result of the integrated laboratory testing of the technology.
References
1. Lassner, E. From Tungsten Concentrates and Scrap to Highly Pure Ammonium Paratungstate (APT) in The Chemistry of Non-Sag Tungsten /E.Lassner, Ed. L.Bartha, E.Lassner, W.-D.Schubert and B.Lux.-Pergamon, 1995.-Р.35-44.
2. Panov V.S., Chuvilin A.M., Falkovsky V.A. Technology and properties of sintering hard alloys and products from them. - M.: MISIS, 2004. - 463 p. (in Russian)
3. V. V. Malyshev, V. V. Soloviev, T. F. Lukashenko. Ecologically safe and resource-saving methods of processing waste of hard alloys tungsten carbide-cobalt and extraction of tungsten from tungsten concentrates. // Bulletin of the KrNU named after Mikhail Ostrogradsky. - Issue 4/2011 (69). -P.1. – P.155-159. (in Russian)
4. Patent RU2443507. A method for processing waste hard alloy VK-8 by electroerosive dispersion. Dvornik M.I., Ershova T.B.. Published: 27.02.2012. (in Russian)
5. Kim B. Shedd. Tungsten recycling in the United States in 2000, Open-file report 2005-1028, published 2005 online // URL: http://pubs.usgs.gov/of' 2005/1028 /index.html
6. Lassner E., Schubert W.D. Tungsten: properties, chemistry, technology of the element, alloys, and chemical compounds.-NY: Kluwer Academic, Plenum Publishers, 1999.-422 p.
7. Zelikman A.N., Kasparova T.V., Binder S.I. Obtaining hard alloys from regenerated WC-Co mixtures obtained from lumpy waste by the zinc method // Tsvetnye metally. –1993. -No. 1. -S. 47-49. (in Russian)
8. Bord N.Yu., Korolevich S.V., Khonyak K.V. New technology for processing hard and heavy alloys // Tool. –1997. -No. 6. -S. 10. (in Russian)
9. Patent 20120028490 KR. Recycling method of tungsten carbide from waste cemented carbide using pressured zinc melt / Pee Jae Hwan, Yun Jin Soon, Cho Woo Seok, Kim Kyung Ja, Seong Nam Eui. Publication data 23.03.2012.
10. Patent No. 2341571 RF. Apparatus for processing hard alloy waste using a zinc method / Trotsenko I.G., Svistunov N.V. Published on 12/20/2008. (in Russian)
11. Patent No. 2581690 RF. Reactor for the destruction of waste hard alloys by gaseous zinc. Trotsenko I.G. Published on 04/20/2016. (in Russian)
12. SU 209934A1. Electrolyte for electrochemical dimensional processing of high-hard alloys of VK type. Moroz I.I. Appl. No. 864937/22-1, 1963.11.10. Published 1968.01.26 (in Russian)
13. RU 2 110 590 C1 Method for processing hard alloy carbide waste Authors of the patent: Palant A.A. Levin A.M. Appl. 1996-07-11, publ. 1998-05-10. (in Russian)
14. RU 2489504 C2 method for recycling waste hard alloys containing tungsten carbide and cobalt as a binder. Petrov V.V., Dmitriev E.A., Moiseev A.V. (RU). Appl. 24.10. 2011, publ. 08/10/2013. (in Russian)
15. Smirnova L. V. High-speed anodic dissolution of tungsten and hard alloys of the VK type in aqueous-organic solutions of sodium chloride. -Abstract ... Ph.D. – Ivanovo, 2000. (in Russian)
16. Limousa Abrosov. Electrochemical oxidation of wastes of rare refractory metals under the action of alternating current. -Abstract ... st Ph.D. – M.: 2011. (in Russian)
To cite this article: U. N. Ruziev, S. N. Rasulova, V. P. Guro, A. Б. Ibragimov, M. A. Ibragimova, I. Y. Chorieva. Technology of electrochemical waste processing hard alloys with tungsten and cobalt regeneration // Uzbek chemical journal. -2022. – Nr5. - Pp.15-21.
Received: 20.05.2022; Accepted: 30.06.2022; Published: 24.10.2022
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UDK 661.662:661.56
R. Ch. Yorbobaev, Х. Ch. Mirzakulov, B. B. Sadikov, A. R. Gaynullina
THE PROCESS OF OBTAINING MONO- AND DIKALCIUM PHOSPHATE FERTILIZERS ON THE BASIS OF KYZYLKUM WASHED RAINED PHOSPHOCONCENTRATE, NITRIC ACID AND AMMONIA
Tashkent Institute of Chemical Technology, khchmirzakulov@mail.ru
Abstract. Background. The enterprises "Maxam-Chirchiq", "Navoiyazot", "Farg`onaazot", "Ammofos-Maxam", "Qo`qon superfosfat zavodi", "Dehqonobod kaliyli o`g`itlar zavodi", "Elektrokimyozavod" produce mineral fertilizers, for which the actual problem is the development of technologies for mono- and dicalcium phosphate fertilizers.
Purpose. Obtaining NPCa-fertilizer based on the decomposition of the Kyzylkum phosphorus concentrate (MOFC) with nitric acid.
Methodology. The filtration of the nitrate-calcium-phosphate pulp formed from MOPA with nitric acid was used; monocalcium phosphate was obtained by neutralizing the liquid phases with ammonia.
Originality. It has been shown that to improve filtration, the nitro-calcium-phosphate pulp was settled, the main fraction settled by 80%, forming 4-7% of the thickened part of the total mass of the pulp; the rest is filtered and separated into solid and liquid phases.
Findings. The decomposition processes were carried out on the basis of adding 55% nitric acid to MOPA at a rate of 80-120%, the ratio T : L = 1 : (2.5-3.3), a temperature of 40°C and a process duration of 40 minutes. Mono- and dicalcium phosphate fertilizers have been obtained.
Key words: washed calcined phosphate concentrate, nitric acid, calcium nitrophosphate pulps, separation, solid and liquid phases.
Highlights:
- obtained mono- and dicalcium phosphate fertilizer based on MOFC;
- their composition is determined.
References
1. Angelov A.I., Levin B.V., Klassen P.V. World production and consumption of phosphate raw materials // Mining Journal. - Moscow. - 2003. - No. 4-5. - S. 6-11. (in Russian)
2. Khokhlov A.V. Geography of the world phosphate industry / Khokhlov A.V. // Consulting company "Vlant". - 2001. - 41 p. (in Russian)
3. Angelov A.I., Levin B.V., Chernenko Yu.D. Phosphate raw materials. Directory. M.: Nedra-Businesscenter LLC. - 2000. - 120 p. (in Russian)
4. Rami al Ravashdeh, Philip Maxwell. The evolution and prospect of the phosphate industry // Miner Econ. – 2011. – 24. – Рр. 15-27.
5. Mirzakulov Kh.Ch. Physico-chemical basis and technology for processing phosphorites of the Central Kyzylkum. -Tashkent. - 2019. - 412 p. (in Russian)
6. Volynskova N.V. Development and improvement of technology for the production of phosphoric acid from phosphorites of the Central Kyzylkum. - Tashkent. - 2019. - 196 p. (in Russian)
7. Yorbobaev R.Ch., Suvanov F.R., Mirzakulov Kh.Ch., Usmanov I.I. Decomposition of phosphorites of the Central Kyzylkum by nitric acid and rheological properties of acidic and ammoniated solutions // Universum: Technical sciences: electron. scientific magazine [and etc.]. - 2020. - No. 6(75). (in Russian)
8. Yorbobaev R.Ch., Melikulova G.E., Mirzakulov X.Ch., Usmanov I.I. . Kinetics of decomposition of Central Kyzylkum phosphorites with nitric acid // Scientific and technical journal of NamIET // www.nammti.uz ISSN 2181-8622.-VOL 5. – Issue (4).-2020. – Pр. 147-155.
9. Yorbobaev Ruslan, Mirzakulov Kholtura, Zikirov Husan, Olmurova Shakhodat. Technology of Complex Processing of Washed Burnt Concentrate of Central Kyzylkums with Nitric Acid //International Journal of Advanced Research in Science, Engineering and Technology. – 2022. – Vol. 9. – Issue 8. – Pр. 19600-19606.
10. Namazov Sh.S., Reimov A.M., Mirzakulov Kh.Ch., Yakubov R.Ya., Beglov B.M. Obtaining nitrocalcium phosphate and nitrocalcium sulfophosphate fertilizers from ordinary phosphate flour of the Central Kyzyl Kum on a laboratory model plant. // Chemical industry. -St. Petersburg. - 2004. - No. 12. - S. 604-610. (in Russian)
11. Sultanov B.E., Tursunova Z.M., Namazov Sh.S., Beglov B.M. Enrichment of phosphorites of the Central Kyzylkum with concentrated nitric acid // Uzbek chemical journal. - 2002. - No. 3. - P. 3-7. (in Russian)
12. Sultanov B.E., Namazov Sh.S., Tursunova Z.M., Erkaev A.U., Khamraev S.S., Beglov B.M. Disperse composition of the concentrate obtained during the enrichment of phosphorite of the Central Kyzyl Kum with nitric acid // Uzbek chemical journal. - 2003. - No. 5. - S. 51-54. (in Russian)
To cite this article: R. Ch. Yorbobaev, Х. Ch. Mirzakulov, B. B. Sadikov, A. R. Gaynullina. The process of obtaining mono- and dikalcium phosphate fertilizers on the basis of Kyzylkum washed rained phosphoconcentrate, nitric acid and ammonia // Uzbek chemical journal. -2022. – Nr5. - Pp.21-28.
Received: 20.09.2022; Accepted: 13.10.2022; Published: 24.10.2022
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UDK 666.1
X. A. Adinayev, Z. R. Kadirova
DIFFERENTIAL THERMAL ANALYSIS OF SOLUTION BASED ON LEAD-SILICA OXIDE SYSTEM AND OPPORTUNITIES FOR PRODUCING TRANSPARENT GLASS BASED ON THEM
AS RUz Institute of General and Inorganic Chemistry, Xidir72@mail.ru
Abstract. Background. The creation of effective compositions of glasses and special materials based on local raw materials is topical. A comprehensive study of the relevant local raw materials is needed.
Purpose. To study the composition, physical and chemical properties of recycled fiberglass and the possibility of obtaining transparent glass.
Methodology. Modern physical-chemical and traditional methods of glass technology are used.
Originality. It has been experimentally proven that the PbO-SiO2 system consists of 70%PbO+30%SiO2 and 80%PbO+20%SiO2. The possibility of obtaining glass on the basis of the obtained mixture of optimal composition is shown;
Findings. An alternative composition of 80% PbO + 20% SiO2 proved to be suitable for low-temperature firing to obtain transparent glass, it was obtained with a high refractive index.
Key words: lead oxide, silica, raw materials, transparent glass, refractive index, differential thermal analysis.
Highlights:
- transparent glass products at low temperature;
- alternative compositions with the main indicators;
- formulations in combination with PbO and SiO2-containing solids;
- physical and chemical properties of transparent glasses were studied.
References
1. Ismatov A.A. Silicate wa qiyin eriydigan nometal materiallar technology. - Tashkent: Fan va technology, 2006. - 584 b. (in Russian)
2. Sulimenko L.M. General technology of silicates. - Moscow: NITs INFRA, 2020. - 336 p. (in Russian)
3. V.E. Manevich., K.Yu. Subbotin., V.V. Efremenkov. Raw materials, charge and glassmaking. -M.: RIF "Building Materials", 2008. -224 p. (in Russian)
4. Leshina V. A. Raw materials and charge in the production of glass: textbook. allowance: in 2 hours. Part 2 / V. A. Leshina; Vladim. state un-t. - Vladimir: Ed.-izd. complex VlGU, 2005. - 44 p. (in Russian)
5. Toropov N.A., Barzakovsky V.P., Lapin V.V., Kurtseva N.N. State diagrams of silicate systems. Directory. - L .: Nauka, 1969. - S. 98-102. (in Russian)
6. Winchell A.N., Winchell G. Optical properties of artificial minerals. - M.: Mir, 1967. - S. 80 - 101. (in Russian)
7. Mineralogical tables / Edited by E.I. Semenova/. - M.: Nedra, 1981. - S. 378 - 379. (in Russian)
8. Dana J.D., Dana E.S., Frondel K. System of mineralogy. Volume 3. Silica Minerals. – M.: Mir, 1966. – 431 p. (in Russian)
9. Ismatov A.A. Silicate va zurga suyuluvchan materiallar physicist-kimyovy tahlilining zamonaviy usullari. - Tashkent: Fan va technology, 2006. - 272 p. (in Russian)
10. Geology and minerals of the Republic of Uzbekistan. Edited by T.Sh. Shayakubova and T.N. Dalimov. - Tashkent: National University, 1998. - S. 560-566. (in Russian)
11. Sevostyanova T.S. Physical and chemical properties of materials based on solid solutions of lead, barium and lanthanides crystallized from fluoroborate systems. Abstract…. Ph.D. - Moscow: RKhTU, 2018. - 17 p. (in Russian)
12. Muminova D.R. Study of crystalline and glassy derivatives of melilite with the aim of developing microballoons of road signs on their basis. - Dissertation... Ph.D. - Tashkent: TashPI named after Beruni, 1983. - 136 p. (in Russian)
13. Tykachinsky I.D. Design and synthesis of glasses and glass-ceramics with desired properties. - Moscow: Stroyizdat, 1977. - 146 p. (in Russian)
14. Appen A.A. Chemistry of glass. - Leningrad: Chemistry, 1970. - S. 128-195. (in Russian)
15. Adinaev H.A. Development of compositions and technology for the production of lead-containing glasses and glass-ceramics. Abstract Ph.D. - Tashkent: TKhTI, 2010. -28 p. (in Russian)
To cite this article: X. A. Adinayev, Z. R. Kadirova. Differential thermal analysis of solution based on lead-silica oxide system and opportunities for producing transparent glass based on them // Uzbek chemical journal. -2022. – Nr5. - Pp.28-33.
Received: 26.09.2022; Accepted: 20.10.2022; Published: 24.10.2022
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UDK 666.1.022/122.2
A. B. Anvarov, Z. R. Kadirova
DETERMINATION OF THE SUITABILITY OF TULAKUL VEINED QUARTZ FOR OBTAINING GLASS MATERIALS
AS RUz Institute of General and Inorganic Chemistry, E-mail: akbar.anvarov@yahoo.com
Abstract. Background. In the glass industry of the republic, a demanded task is to replace the main raw materials with components that reduce the cost of finished products.
Purpose. Study of veined quartz from the Tulakul deposit as a raw material for the production of transparent glass and crystal.
Methodology. X-ray fluorescent analysis and physico-mechanical research methods.
Originality The suitability of quartz from the Tulakul deposit for obtaining high-quality glass materials has been established.
Findings. The suitability of Tulakul vein quartz for obtaining high-quality glass has been established. It is shown that the mass fraction in % is not less than: silicon oxide, - 99.2; iron oxide - 0.01; aluminum oxide - 0.60 and moisture - 0.2. They comply with the requirements of GOST 22551-2019.
Key words: transparent glass, vein quartz, quartzite, replacement of the main raw material, iron oxide, silicon oxide.
Highlights:
- chemical composition of vein quartz of the Tulakul deposit;
- suitability of vein quartz for extra pure glasses.
References
1. Mirziyoev Sh.M. “Together we will build a free, democratic and prosperous State of Uzbekistan.” -Tashkent. -2016. (in Russian)
2. "Uzbekistan is a country rich in deposits." -Uzbekistan, Tashkent. - AN Podrobno.uz. (in Russian)
3. Appen A.A. Chemistry of glass. - L.: Chemistry, 1974. - 265 p. (in Russian)
4. Ergeshov A.M., Fimushkin L.I. Geological and economic monitoring of the state and use of the mineral resource base of non-metallic raw materials in Uzbekistan. - Tashkent, 2005.-161 p. (in Russian)
5. Babaev Z.K., Ibragimov D.U., Karimov Sh.Kh., Kenzhaev F.D., Yadgorov A.M. State and development of the glass industry in Uzbekistan // Chemical technology. - 2018. - No. 2 (47). - S. 1503. (in Russian)
6. O. V. Kazmin, E. N. Belomestnova, and A. A. Ditz, Chemical technology of glass and glass-ceramics. -Tomsk: Publishing House of Tomsk Polytechnic. un-ta, 2011. -170 p. (in Russian)
7. Zhernovaya N.F., Onischuk V.I., Minko N.I. Physico-chemical foundations of technology of glass and glass-ceramic materials: educational and practical guide. - Belgorod: publishing house BegGTASM, 2001. – 101 p. (in Russian)
8. Akhmadjonov A.A., Kadyrova Z.R., Usmanov Kh.L. Prospects of quartz sands of new deposits in glass production.// Proceedings of the XXIV International Symp. named after academician M.A. Usov "Problems of geology and development of subsoil" - Tomsk.-2021.-S.302-304. (in Russian)
9. Sulimenko L.M., "General technology of silicates". -Infra-M, Textbook. - 2020. (in Russian)
10. Artikhodzhaeva D.M., Mirkhodzhaev B.I. “On the issue of the raw material base of quartz sands of the Republic of Uzbekistan and the methodology for studying their fraction on the example of the Dzheroy deposit” // Electronic scientific journal. -2019. (in Russian)
11. Guloyan Yu.A. "Physico-chemical foundations of glass technology" - Vladimir: Transit-X, 2008. (in Russian)
12. Hülsenberg D., HarnischA., Bismarck A. "Microstructuring of Glasses", 2008. (in Russian)
13. Vlasova S.G. "Fundamentals of Chemical Technology of Glass". - Yekaterinburg, 2013. (in Russian)
14. Pavlushkin N.M., Sentyurin G.G., Khodakovskaya R.Ya. Workshop on the technology of glass and glass-ceramics. - M.: Stroyizdat, 1970. - S. 509 (in Russian)
15. Ilganaev V.B., Ismatov A.A. "On the enrichment of quartz sands of the Dzheroyskoye deposit", Reports of the Academy of Sciences of the UzSSR. - 1979. - No. 8. - P. 49-51 (in Russian)
16. GOST 22551-2019 Quartz sand, ground sandstone, quartzite and vein quartz for the glass industry. [Electronic resource] - Access mode: https://internet-law.ru/gosts/gost/71978 (in Russian)
To cite this article: A. B. Anvarov, Z. R. Kadirova, Determination of the suitability of Tulakul veined quartz for obtaining glass materials // Uzbek chemical journal. -2022. – Nr5. - Pp.34-38.
Received: 06.10.2022; Accepted: 24.10.2022; Published: 24.10.2022
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UDK 678.742.046
B. A. Nomurodov, Kh. Kh. Turaev, М. E. Toshev, A. T. Dzhalilov
SEALANTS BASED ON MODIFIED THIOKOLE RUBBER AND CROTONIAN ALDEHYDE, HARDENED BY METAL OXIDES
1Termez State University, 2LLC Tashkent Research Institute of Chemical Technology
Abstract. Background. To create sealing materials, polysulfide oligomers with functional groups of phosphorus and sulfur are used, which is explained by the invariance of curing methods and functional properties. The study of the process of their synthesis, production technology is relevant.
Purpose: development of methods for obtaining thiokol sealants with improved properties, modified on the basis of crotonaldehyde and metal oxides.
Methodology. The physical and mechanical properties of the sealants were evaluated on an AGS-X "AGS-X SHMADZU" testing machine, and the viscometry method was used.
Originality. The new oligomer was obtained by modifying thiokol oligomers with unsaturated compounds and metal oxides.
Findings. Thiokol oligomers were obtained by modification with crotonaldehyde and metal oxides: ZnO and MnO2. The optimal mass ratio of metal oxides and modified thiokol oligomers has been found.
Key words: polysulfide, thiokol oligomers, crotonaldehyde, zinc oxide, manganese dioxide.
Highlights:
- the effect of metal oxides on the physical and mechanical properties of sealants;
- sealants obtained on the basis of modified thiokol oligomers.
References
1. Yu.S. Kochergin Yu.S., Grigorenko T.I., Zolotareva V.V. Influence of thiocol and carboxylate oligobutadiene rubbers on the properties of epoxy polymers // Vopr. chem. chem. Tekhnol., No. 5, 162–166 (2006). (in Russian).
2. O.V. Pirikov, D.P. Loiko, Yu.P. Kochergin S., Lazareva O. Influence of rubber-based modifiers on consumer properties of epoxy adhesive compositions // Vist. DonDUET 4 (24), 115–122 (2004). (in Russian).
3. Yu.S. Kochergin Yu.S., Zolotareva V.V., Grigorenko T.I., Shologon V.V. Features of epoxy-rubber adhesive compositions cured by polyoxypropylenetriamine // Polymer. sciences, ser. pp. 49 (2), 188–192 (2007). (in Russian).
4. Novakov I.A., Nistratov A.V., Vaniev M.A. et al. Influence of the nature of plasticizers on the structural and mechanical properties of vulcanizates of thiokol sealants // Clay, sealants, technologies, No. 2, 2006. P. 15–18. (in Russian).
5. Minkin V.S., Averko Antonovich L.A., Kirpichnikov P.A., Sukhanov P.A. Modification of sealants based on polysulfide oligomers // Vysokomolecular. Connect, ser. A. 31(2), 238–252 (1989). (in Russian).
6. V.S. Minkin, Yu.S. Khakimullin Yu.N., Kurkin A.I. Application of radiospectroscopy to control the operational properties of building polymer coatings based on polysulfide oligomers // Tr. 3rd Resurrection readings on polymers in construction. Kazan: Butlerov Communications, 2009, pp. 121–122. (in Russian).
7. Yu.V. Kochergin Yu.S., Grigorenko T.I., Lazareva L.A. Regulation of the properties of epoxy compositions cured with polyoxypropylenetriamine // Polymer. sciences, ser. D 3 (1), 2010, pp. 50–53. (in Russian).
8. Yu.V. Khakimullin Yu.N., Minkin V.S., Palyutin F.M., Deberdeev T.R. Sealants based on polysulfide oligomers: synthesis, properties and applications. Moscow: Nauka, 2007. (in Russian).
9. Urbonaite V., Ph.D. thesis in chemistry (Kazan, 2003). (in Russian).
10. T.Yu. Markova, Ph.D. thesis in chemistry (Kazan, 1991). (in Russian).
11. Pyrikov A.V., Loiko D.P., Yu.P. S. Kochergin. Modification of epoxy resins with liquid polysulfide and carboxylated butadiene rubbers. polymer science. Volume 3 of the series, pages 185–189 (2010). (in Russian).
12. Dubkova V.I. Metal and oxide nanoparticles on the surface of carbon fibers are effective catalysts for the chemical transformations of epoxy oligomers. Part of the book series NATO Science Series II: Mathematics, Physics and Chemistry (NAII, Volume 172). (in Russian).
13. Gorbunova E.V., Deev Yu.S., Ryabov E.A. The mechanism of lactam polymerization in the presence of transition metal oxides. Plast. Massey 1980; 4:17–9 (in Russian).
14. Normurodov B.A., Tozhiev P.Zh., Turaev Kh.Kh., Zakharov A.T. Jalilov, F.N. Nurkulov Research of physical and mechanical properties of basalt-containing polyethylene compositions // Tashkent: Composite materials-2017. -N1. 4.-S.10-12. (in Russian).
To cite this article: B. A. Nomurodov, Kh. Kh. Turaev, М. E. Toshev, A. T. Dzhalilov. Sealants based on modified thiokole rubber and crotonian aldehyde, hardened by metal oxides // Uzbek chemical journal. -2022. – Nr5. - Pp.39-44.
Received: 30.08.2022; Accepted: 03.10.2022; Published: 24.10.2022
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UDK 665.6: 665.6/.7
D. P. Radjibayev, A. M. Khurmamatov
STUDY OF THE PROCESS OF HYDROTREATMENT AND HYDROGENATION OF PYROLYSIS DISTILLATE
AS RUz Institute of General and Inorganic Chemistry, e-mail: gafuri_19805@mail.ru
Abstract. Background. At JV Uz-Kor Gas Chemical LLC 102,000 tons of pyrolysis distillate, 8.000 tons of pyrolysis oil and 10.000 tons of resinous products are annually produced. These products are not processed in the republic.
Purpose. Development of technology for the processing of pyrolysis distillate and its industrial testing at Kungrad Gas-Oil LLC. Its peculiarity is the high yield of gasoline due to the complex hydrodynamic processing of the pyrolysis distillate during its intensive contact with the catalyst.
Methodology. The experiments were carried out on a pilot plant for studying the processes of catalytic processing of pyrolysis distillate. The quality indicators of pyrolysis distillate samples were determined according to GOST 9736-68 and GOST 2177-99, sulfur determinations according to GOST 1437-75.
Originality. The values of pyrolysis distillate hydrogenation regimes are revealed. Qualitative indicators of obtained samples of distillate fractions meet the requirements of the company's standards KSt 16472899-022:2006 for light naphtha and KSt 16472899 -026:2006 for heavy naphtha.
Findings. The mass fraction of sulfur in the pyrolysis distillate fractions, in the presence of the AKM catalyst at 350°C and 3.5 MPa, decreases by 70–80 mg/kg, and the mass content of resins in their composition decreases by 104–120 mg/100 cm3. At the same time, the density of the obtained distillate fractions decreases by 7.3÷8.9 kg/m3, and the temperature regime of their distillation does not change significantly.
Key words: pyrolysis distillate, field composition, boiling temperature, evaporation, condensation, oil products.
Highlights:
- an effective technology for the processing of pyrolysis distillate;
- mass fraction of sulfur in the fractions of the pyrolysis distillate is reduced;
- pyrolysis distillate treated in the presence of AKM catalyst.
References
1. Study of the chemical composition of pyrolysis production pyrocondensate / O.Sh. Kodirov [et al.] // Universum: Technical sciences: electron. scientific magazine - 2018. - No. 9 (54) / [Electronic resource]. – Access mode: URL: http://7universum.com/ru/tech/archive/item/6383. (in Russian).
2. Official website of JV LLC "Uz-Kor Gas Chemical" / [Electronic resource]. – Access mode: http://www.uz-kor.com/index.php/ru/deyatelnost. (in Russian).
3. Sosnovskaya L.B. Intensification of ethylene production processes on the example of OAO Nizhnekamskneftekhim: Author's abstract… cand. tech. Sciences. - Kazan, 2007. - 18 p. (in Russian).
4. Khudaiberdiev Ab.A., Khurmamatov A.M. Pilot plant for studying the processes of catalytic processing of pyrolysis distillate. Materialy respubl. NPK: Actual problems of development of industrial production in the Republic of Karakalpakstan. - Nukus, April 26, 2021 - P. 110-112. (in Russian).
5. Khudaiberdiev Ab.A. Development of processes for preparing pyrolysis distillate for processing Dis…. Doctor of Philosophy (Doctor of Philosophy) in technical sciences. -Tashkent, 2022.- 58 p. (in Russian).
6. A.A. Hudayberdiev Study of the static of the process of heating hydrocarbon raw materials in tubular apparatus// International scientific and technical journal Chemical technology. Control and management. -2019.-No. 1(85).-Rp. 63-67. (in Russian).
7. Khudaiberdiev A.A. Ismailov O.Yu., Sharipov K.K., Radzhibaev D.P. Calculation of the heat capacity of the pyrolysis distillate// Actual problems of cleaning oil and gas from impurities by various physical and chemical methods: Proceedings of the republican scientific and industrial complex. - Karshi: Karshi DU, April 27, 2019 - P.221-222. (in Russian).
8. Khudaiberdiev Ab.A., Khudoyberganov A.A., Khurmamatov A.M., Khudaiberdiev A.A. Analysis of the results of catalytic processing of pyrolysis distillate in an experimental reactor// Universum: Technical sciences: electron. scientific journal-2021. - No. 7(87). - URL: http:// 7universum.com/ru/tech/archive/item/12107. - S. 9-14. (02.00.00; No. 16) (in Russian).
9. Chemistry of oil. Guide to laboratory studies: Textbook for universities / I.N. Diyarov, I.Yu. Batueva, A.N. Sadykov, N.L. Solodov. - L.: Chemistry, 1990. - 240 p. (in Russian).
10. Andronova I.N. Development and research of a semi-continuous technology for the production of a hydrotreating catalyst. Dis. ...cand. tech. Sciences. - Tashkent: IONKh AN RUz, 1976. - 144 p. (in Russian).
11. Bekturdiev G.M. Development of nickel-molybdenum catalysts on refractory carriers for destructive hydrogenation of vacuum distillate. -Dis. ... cand. tech. Sciences. - Tashkent, IGIC AS RUz, 2003. - 115 p. (in Russian).
12. Makhmudov M.Zh. SFM va қўndirmalarni қўllab benzinlarni detonation bvrkarorligini oshirishning colloid-kimyovy hususiyatlari: Fan Doctor (DSc) ilmiy darazhasini olish uchun dissertation. - Tashkent, IGIC AS RUz, 2020. - 186 p. (in Russian).
13. Sultonov A.S. Improvement of technologies for the preparation of local oils and gases based on their colloid-chemical properties. Dis. ... doctor of tech. Sciences (DSc). - Tashkent, IGIC AS RUz, 2020. - 197 p. (in Russian).
14. Khudaiberdiev A.A., Khurmamatov A.M., Khudaiberdiev A.A., Ono-freychuk A.O. Development of technology for hydrotreatment of pyrolysis distillate// Innovative developments in the field of chemistry and technology of fuels and lubricants: Collection of reports and abstracts of the II International Scientific and Technical Committee. - Bukhara: BNPZ, October 19-20, 2017 - S. 281-283. (in Russian).
15. Khudaiberdiev Ab. A., Khudoyberganov A. A., Khurmamatov A. M., Khudaiberdiev A. A. Analysis of the results of catalytic processing of pyrolysis distillate in an experimental reactor// Universum: Technical sciences: electron. scientific journal-2021. - No. 7(87). - URL: http:// 7universum.com/ru/tech/archive/item/12107. - S. 9-14. (02.00.00; No. 16) (in Russian).
16. Technological regulations for the installation of atmospheric distillation of a mixture of gas condensate and oil and fractionation of hydrotreated naphtha (installation 10) of the Bukhara Oil Refinery. - TR 16472899-001: 2009. (in Russian).
17. Permanent process regulations for the gas oil hydrotreatment unit of the Bukhara Oil Refinery (installation 13) TR16472899-003:2015. (in Russian).
To cite this article: D. P. Radjibayev, A. M. Khurmamatov. Study of the process of hydrotreatment and hydrogenation of pyrolysis distillate // Uzbek chemical journal. -2022. – Nr5. - Pp.44-52.
Received: 21.09.2022; Accepted: 20.10.2022; Published: 24.10.2022
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ORGANIC CHEMISTRY
UDK 547.789:547.298.3
Z. Zh. Pulatova, P. A. Nurmaxmadova, I. S. Ortikov, I. A. Abdugafurov, B. Zh. Elmuradov
SYNTHESIS AND INHIBITORY ACTIVITY OF NEW BIHETEROCYCLES IN THE SERIES OF 1,2,3-TRIAZOLO-BENZOXAZOLES
1Institute of Chemistry of Plant Substances of the Academy of Sciences of the Republic of Uzbekistan. E-mail: ilxon@mail.ru, 2National University of Uzbekistan named after Mirzo Ulugbek
Abstract. Background. The search for potentially active heterocyclic compounds, in particular, low-toxicity and pharmacologically active ones, and the targeted synthesis of promising substances, as well as the creation of effective biologically active drugs based on them, are topical. These include benzoxazole and 1,2,3-triazoles.
Purpose. Development of a method for carrying out the reaction of 1,3-bipolar cycloaddition of 3-propalgylbenzoxazolin-2-one with some aromatic azides, revealing the structure and inhibitory activity.
Methodloogy. Biheterocycles were synthesized in the series of 1,2,3-triazolobenzoxazoles by selective cycloaddition of a 3-propargyl derivative with substituted aromatic azides. The structure was confirmed by IR, 1H-NMR spectroscopy.
Originality. New derivatives of 1,2,3-triazoles have been synthesized. The factors influencing the course and direction of the reaction are revealed. The inhibitory and growth-stimulating activities of the obtained substances were studied.
Findings. An efficient method for the catalytic cycloaddition of 3-propalgylbenzoxazolin-2-one with aromatic azides has been developed. Their IR and 1H-NMR spectra were analyzed
Key words: propargyl bromide, 3-propalgylbenzoxazolin-2-one, 2-bromo-4-nitrophenylazide, 1,3-bipolar cycloaddition, copper (I) iodide,
Highlights:
- 3-propalgylbenzoxazolin-2-one was synthesized in high yield;
- cycloaddition of azides to 3-propalgylbenzoxazolin-2-one;
- the effect of temperature and solvent’s nature on the yield of products;
- inhibitory and stimulating activity of benzoxazole-triazole.
References
1. Raafat Soliman, Nargues S. Habib. Synthesis of Tetrahydrobenzothieno[2,3- d]pyrimidine аnd Tetrahydrobenzo thieno[3,2-e]-[1,2,4]triazolo[4,3-c]pyrimidine Derivatives as Potential Antimicrobial Agents // Sci. Pharm.-2009.-Vol.77.-P. 755-773. (in Russian).
2. El Shehry, M. F.; Abu-Hashem, A. A.; El-Telbani, E. M. Synthesis of 3-((2,4-dichlorophenoxy)methyl)-1,2,4-triazolo(thiadiazoles and thiadiazines) as anti-inflammatory and molluscicidal agents //Eur J Chem Med. -2010.-Vol.45.-P.1906-1913. (in Russian).
3. Jian- Quan Weng, Xing-Hai Liu, Hua Huang, Cheng-Xia Tan and Jie Chen.Synthesis, structure and antifungal activity of new 3-[(5-aryl-1,3,4-oxadiazol-2-yl) methyl] benzo[d]thiazol-2(3h)-ones.// Molecules, -2012.-Vol. 17. -P. 99-101. (in Russian).
4. Pu Xiang, Tian Zhou, Liang Wang, Chang-Yang Sun, Jing Hu, Ying-Lan Zhao and Li Yang. Novel benzothiazole, benzimidazole and benzoxazole derivatives as potential antitumor agents: Synthesis and Preliminary in Vitro Biological Evaluation. // Molecules. -2012. -Vol.17. -P. 873-883. (in Russian).
5. Satyanarayana Yatam, Surender Singh Jadav, Rambabu Gundla, Krishna Prasadh Gundla, Gangireddy Madhusudhana Reddy, Mohamed Jawed Ahsan, and Jithendra Chimakurthy. Design, Synthesis and biological evaluatio of 2 (((5-aryl-1,2,4-oxadiazol-3-yl)thio) benzo[d]oxazoles:new antiinflammatory and antioxidant agents. // ChemistrySelect. -2018. -Vol. 3. -P. 10305-10310. (in Russian).
6. Sathish KumarB., VeenaB. S., Anantha LakshmiP. V., KamalaL., and SujathaE. Synthesis and antimicrobial activity of novel 1,4,5-triphenyl-1h-imidazol-[1,2,3]-triazole derivatives // Russian Journal of Bioorganic Chemistry.-2017.-Vol. 43.-№ 5. -P. 589-594. (in Russian).
7. Saloni Kakkar, Sanjiv Kumar, Balasubramanian Narasimhan, Siong Meng Lim, Kalavathy Ramasamy, Vasudevan Mani and Syed Adnan Ali Shah. Design, synthesis and biological potential of heterocyclic benzoxazole scaffolds as promising antimicrobial and anticancer agents // Chemistry Central Journal. -2018. –Vol. 12: 96. -P. 1-12 (in Russian).
8. Serdar Unlu, Sultan Nacak Baytas, Esra Kupeli, Erdem Yesilada. Studies on novel 7-acyl-5-chloro-2-oxo-3h-benzoxazole derivatives as potential analgesic and anti-inflammatory agents // Arch. Pharm. Med. Chem. -2003.-Vol. 336.-P. 310-321. (in Russian).
9. Benazzouz A., Boraud T., Dubedat P., Boireau A., Stutzmann J.M., Gross C. Riluzole prevents MPTP-induced parkinsonism in the rhesus monke a pilot study // Eur. J. Pharmacol. -1995. –Vol.284. -Issue 3. –P.299–307. (in Russian).
10. Veronika Slachtovaand Lucie Brulikova. Benzoxazole derivatives as promising antitubercularagents//ChemistrySelect. -2018.-Issue 3. -P. 4653 – 4662 (in Russian).
11. Aflyatunova R.G., Babakhanova Kh.R., Aliev N.A. Benzoxazolinones. VI. reaction of benzoxazolinone and of benzoazolinethione with substituted u-halocarbonyl compounds // Chem. Nat. Compd. -1987. -Vol.23. -Issue 3. -P.340-344. (in Russian).
12. Chilumula N.R., Gudipati R., Ampati S., Manda S., Gadhe D. Synthesisof some novel methyl-2-(2-(arylideneamino) oxazol-4-ylamino)-benzoxazole-5-carboxylate derivatives as antimicrobial agents // Int. J. Chem. Res. -2010. –Vol.1. -Issue 2. -P.1–6. (in Russian).
13. Ryu C.K., Lee R.Y., Kim N.Y., Kim Y.H., Song A.L. Synthesis and antifungalactivity of benzo[d]oxazole-4,7-diones // Bioorg. Med. Chem. Lett. -2009. –Vol.19. -Issue 20. -P.5924–5926. (in Russian).
14. Khurshed Bozorov, Jiangyu Zhao, Haji A. Aisa. 1,2,3-Triazole-containing hybrids as leads in medicinal chemistry: A recent overview// Bioorganic & Medicinal Chemistry. -2019. -Vol. 27. -P. 3511-3531 (in Russian).
15. Mohamed Ellouz, Nada Kheira Sebbar, Ismail Fichtali, Younes Ouzidan, Zakaria Mennane, Reda Charof.Synthesis and antibacterial activity of new 1,2,3-triazolylmethyl-2H-1,4-benzothiazin-3(4H)-one derivatives// Chemistry Central Journal. -2018.-№ 12.-P.123-134 (in Russian).
16. R. Das, N. Mujumdar and A. Lahiri.A review on 1,3-dipolar cycloaddition reactions in bio conjugation and its importance in pharmaceutical chemistry // International Journal of Research in Pharmacy and Chemistry (IJRPC). -2014. -Vol. 4(2). -P. 467-472 (in Russian).
17. Mumtaz Hussain, Tahir Qadri, Zahid Hussain, Aamer Saeed, Pervaiz Ali Channar, Syeda Aaliya Shehzadi, Mubashir Hassan, Fayaz Ali Larik, Tarique Mahmood, Arif Malik. Synthesis, antibacterial activity and molecular docking study of vanillin derived 1,4-disubstituted 1,2,3-triazoles as inhibitors of bacterial DNA synthesis // Heliyon. -2019. -Vol. 5.-P. 02812 (in Russian).
18. Gordon A., Ford R. Chemist's Companion. Physical and chemical properties, methods. Moscow: Mir, 1976. - 541 p. (in Russian).
19. Sabirov M.K., Kuvvatov R.O. Herbicides on irrigated fruit-bearing vineyards.-Tashkent: Fan, 1981. -100 p. (in Russian).
20. Baranov T.V., Kalaev V.N., Voronin A.A. Ecologically safe growth stimulants for pre-sowing seed treatment // Bulletin of the Baltic Federal University. I. Kant. -2014. -No. 7.-S. 96. (in Russian).
21. Rakitina Yu.V. and Rudnik V.E. - "Primary biological evaluation of chemical compounds as a plant growth regulator and herbicides" - Leningrad: Nauka, 1966. -FROM. 182-197. (in Russian).
To cite this article: Z. Zh. Pulatova, P. A. Nurmaxmadova, I. S. Ortikov, I. A. Abdugafurov, B. Zh. Elmuradov. Synthesis and inhibitory activity of new biheterocycles in the series of 1,2,3-triazolo-benzoxazoles // Uzbek chemical journal. -2022. – Nr5. - Pp.53-61.
Received: 22.08.2022; Accepted: 30.08.2022; Published: 24.10.2022
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UDK661.728.8; 544.23.022
M. A. Muslimova, B. N. Mamadiyarov, S. Sh. Shakhabutdinov, S. M. Yugai, N. Sh. Ashurov, A. A. Atakhanov
STRUCTURAL INVESTIGATION OF GLYCIDYLMETHACRYLATE CELLULOSE
Institute of Chemistry and Physics of Polymers, Academy of Sciences of the Republic of Uzbekistan, 100128, Tashkent, A. Kadyri, 7b, e-mail polymer@academy.uz
Abstract. Background. Nanocellulose-based biomaterials are of interest for biomedical applications due to their physical and biological properties. Attention is paid to modified forms of nanocellulose having structural features.
Purpose: to study the structural features of the bioactive nanocellulose ester - cellulose glycidyl methacrylate.
Methodology. Samples of nanocellulose and its modified form with glycidyl methacrylate were studied, the degree of substitution was evaluated by UV (Specord 210 UV-Vis (AnalytikJena, Germany)) and Fourier IR (Inventio-S (Bruker, Germany)) spectroscopy, the amorphous-crystalline structure was studied by X-ray diffraction analysis ( Miniflex600 (Rigaku, Japan)), morphology and sizes by AFM methods (Agilent 5500 (Agilent, USA)).
Originality. Structural features of a nanocellulose derivative, cellulose glycidyl methacrylate, have been revealed.
Findings. X-ray diffraction, UV, IR spectroscopic methods proved the structure of a new derivative of nanocellulose - cellulose glycidyl methacrylate, calculated the degree of substitution, showed changes in the parameters of the crystal structure, shapes and sizes of particles.
Key words: nanocellulose, cellulose glycidyl methacrylate, degrees of substitution, amorphous-crystalline structure, particle size.
Highlights:
- interaction of the hydroxyl group of cellulose with the epoxy group of GM;
- the degree of substitution was estimated by the methods of spectroscopic analysis;
- parameters of the crystal structure by X-ray diffraction analysis;
- the size and shape of the particles were estimated by the method of dynamic light scattering.
References
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14. Atakhanov A.A., Mamadiyorov B.N., Kuzieva M.A., Yugay S.M., Shahobutdinov S.Sh., Ashurov N.Sh., Abdurazakov M. Comparative studies of physic-chemical properties and structure of cotton cellulose and its modified forms Khimiya Rastitel'nogo Syr'ya. -2019.- Issue3.-Рp. 5-13. https://doi.org/10.14258/jcprm.2019034554
To cite this article: M. A. Muslimova, B. N. Mamadiyarov, S. Sh. Shakhabutdinov, S. M. Yugai, N. Sh. Ashurov, A. A. Atakhanov. Structural investigation of glycidylmethacrylate cellulose // Uzbek chemical journal. -2022. – Nr5. - Pp.61-66.
Received: 26.07.2022; Accepted: 25.08.2022; Published: 24.10.2022
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UDK 547.918:547.926
Sh. Kh. Rakhimova, M. A. Agzamova, A. A. Janibekov, L. G. Mezhlumyan, N. A. Adilova
RESEARCH OF PROTEINS AND MINERAL COMPOSITION OF THE ABOVEGROUND PART OF ASTRAGALUS VILLOSISSIMUS
Institute of Chemistry of Plant Substances of the Academy of Sciences of the Republic of Uzbekistan, e-mail: shahnoza2380@mail.ru
Abstract. Background. Plants of the genus Astragalus are of interest as sources of various biologically active substances. Based on the Astragalus species, preparations used in scientific medicine have been developed. In addition, astragalus is a feed raw material for livestock.
Purpose. Determination of the content and amino acid component of proteins, the mineral composition of the aerial part of Astragalus villosissimus, determination of the molecular weight of the protein.
Methodology. The proportion of protein was determined by the method based on Nessler's reagent, FEK instrument (Metash 5000), at a wavelength of 400 nm. Separation and identification of FTC-amino acids was carried out on an Agilent Technologies 1200 chromatograph. IR spectra - on a Perkin-Elmer 2000 IR-Fourier spectrophotometer. Polyacrylamide gel electrophoresis (PAAG) was used in the presence of sodium dodecyl sulfate (SDS PAGE); elemental composition of Optima-2400 DV (Perkin Elmer, USA).
Originality. For the first time, the amino acid composition of the protein was isolated and studied from the aerial part of A. villosissimus. The mineral composition of vegetable raw materials was determined.
Findings. Proteins were isolated, composition was identified. It was shown that the amount of protein in the plant A. villosissimus is 7.6%, the molecular weight is less than 10 kDa. In the IR spectrum, bands are observed in the region of the peptide bond, which are characteristic of proteins consisting of 17 amino acids. The highest content of elements Ca, K and Fe in the analyzed sample of the aerial part of A. villosissimus.
Key words: аstragalus villosissimus, proteins, amino acids, electrophoresis, IR spectroscopy, macro and microelements
Highlights:
- proteins contain three-branched amino acids;
- isoleucine, leucine, valine determine the structure of the molecule.
References
1. Lobanova I.E. 2011. Phytochemical characteristics of Astragalus glycyphyllos.//The flora of Asiatic Russia.- №1. - P.87-90. (in Russian).
2. Khushbaktova Z.A., Agzamova M.A., Syrov V.N., Mirsalikhova N.M., Umarova F.T., Isaev M.I. 1994. Influence of plant cycloartans of the genus Astragalus and their synthetic analogues on myocardial contractile function and Na, K-AT activity. Phases.// Chem. Nat. Compnd.30(4): 469-473. (in Russian).
3. Tsaruk A.V., Iskenderov D.A., Khushbaktova Z.A., Agzamova M.A., Syrov V.N., Isaev M.I. Isolation and study of cycloartan glycosides cycloorbicoside G and cyclosiversioside A on metabolic processes in the rat myocardium.//Journal of Chemical Pharmaceutics.-M.-2010.-44(1):12-15. (in Russian).
4. I.V. Kosakovskaya. stress proteins in plants. //National Academy of Sciences of Ukraine. Kiev.-2008.-S.12-13. (in Russian).
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7. Azizov D.Z., Saburova A.Kh., Azizova D.Sh., Rakhmanberdieva R.K. Polysaccharides of the aerial part of Astragalus villosissimus //L.Farmatsevtika j., -2019.-№1.-26. (in Russian).
8. Yuldasheva N. K., Khidoyatova Sh. K., Gusakova S. D., Zhanibekov A. A. & Agzamova M. A. Lipids from the CHCl3 Extract of the Aerial Part of Astragalus villosissimus //Chemistry of Natural Compounds.-Volume 57.-Pages 1101–1103 (2021)
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10. Azimov N. Sh., Mezhlumyan L. G., Ishimov U. Sh., Aripova S. F., Narbutaeva D. A., Khushbaktova Z.A. & Rakhimova Sh.Kh. Protein Constituents of the Plants Codonopsis clematidea and C. bactriana and Their Biological Activity Chemistry of Natural Compounds. -2021.Volume 57.-Pages 599–600.
11. Azimov N.Sh., Yusufzhonova D.O., Mezhlumyan L. G., Ishimov U.Zh. & Aripova S. F. Biological Activity of Protein Constituents and Alkaloids from the Plant Phragmites communis. Chemistry of Natural Compounds. -2021. -Volume 57.-Pages 597–598
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14. Vasiliev A.V., Grinenko E.V. Infrared spectroscopy of organic and natural compounds. - Tutorial. St. Petersburg.-2007.-30 p.
15. M. Veronica Carranza-Oropeza, Alexander W. Sherrill, J. Robby Sanders et all. Performance assessment of protein electrophoresis by using polyacrylamide hydrogel with porous structure modified with SDS micelles as template //J. APPL. POLYM. SCI. 2016, doi: 10.1002/APP.44063
16. Xiaoqiang Wu, Hisashi Koiwa. One-step casting of Laemmli discontinued sodium dodecyl sulfate-polyacrylamide gel electrophoresis gel. //Anal Biochem. -2012 Feb 1;421(1):347-9. doi: 10.1016/j.ab.2011.10.004.
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To cite this article: Sh. Kh. Rakhimova, M. A. Agzamova, A. A. Janibekov, L. G. Mezhlumyan, N. A. Adilova. Research of proteins and mineral composition of the aboveground part of astragalus villosissimus // Uzbek chemical journal. -2022. - Nr5. - Pp.67-72.
Received: 05.10.2022; Accepted: 13.10.2022; Published: 24.10.2022
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UDK 547.79:547;222-224
A. A. Ziyaev, Т. Т. Toshmurodov, К. К. Turgunov, U. S. Makhmudov, U. B. KHamidova, M. R. Umarova
THE SYNTHESIS, CRYSTAL STRUCTURES AND CYTOTOXIC ACTIVITY OF NEW ALKYL (5-(BENZYLTHIO)-1,3,4-THIADIAZOL-2-YL) CARBAMATES
1Institute of Chemistry of Plant Substances, acad. S.Yu.Yunusov AS RU, 100170, Tashkent, st. M. Ulugbek, 77, e-mail: aziyaev05@rambler.ru, 2Turin Polytechnic University, st. Kichik halqa yuli, 17, Almazar district, 1000095, Tashkent, Uzbekistan, 3Academy of Sciences of the Republic of Uzbekistan
Abstract. Background. The synthesis of 5-amino-1,3,4-thiadiazol-2-thione derivatives and the study of their properties, including pharmacological activity, are topical.
Purpose: synthesis of alkyl (5-(benzylthio)-1,3,4-thiadiazol-2-yl) carbamates, study of the crystal structure and cytotoxic activity
Methodology. The reaction of 2-benzylthio-5-amino-1,3,4-thiadiazole with propyl- and iso-butyl chloroformates was carried out. The results of IR-, 1H, 13C NMR spectra and X-ray diffraction analysis proved the structure of the compounds obtained, and the cytotoxic activity against some cancer cells was also studied by the in vitro method.
Originality. Alkyl (5-(benzylthio)-1,3,4-thiadiazol-2-yl)carbamates have been synthesized, their structure and cytotoxic activity have been studied.
Findings. The acylation reaction yielded propyl- and isobutyl (5-(benzylthio)-1,3,4-thiadiazol-2-yl) carbamates. Compounds under laboratory conditions by the in vitro method do not show activity against HeLa, HBL-100, HEp-2 and CCRF-CEM cancer cells.
Keywords: alkyl(5-(benzylthio)-1,3,4-thiadiazol-2-yl)carbamates, crystal structure, cytotoxic activity.
Highlighs:
-2-benzylthi-5-amino-1,3,4-thiadiazole, propyl-, iso-butyl, chloroformate;
- crystal structure, cytotoxic activity of compounds.
References
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To cite this article: A. A. Ziyaev, Т. Т. Toshmurodov, К. К. Turgunov, U. S. Makhmudov, U. B. KHamidova, M. R. Umarova. The synthesis, crystal structures and cytotoxic activity of new alkyl (5-(benzylthio)-1,3,4-thiadiazol-2-yl) carbamates // Uzbek chemical journal. -2022. - Nr5. - Pp.72-78.
Received: 26.07.2022; Accepted: 13.10.2022; Published: 24.10.2022
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