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SCIENTIFIC STUDY OF THE PHYSICOCHEMICAL PROPERTIES AND THERMAL TRANSFORMATIONS OF USED ZEOLITES

Authors

Kucharov Azizbek, Dusmatova Anzirat, Toshboboyeva Rano, Yusupov Farkhod, Sultonov Sadulla

Rubric:Chemistry
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Annotation

This study investigates the properties of granules prepared using various binding solutions and explores the effect of adding combustible materials and metal oxides to catalysts. Electrolyte solutions significantly increased the specific surface area and total pore volume of the granules, while combustible materials like cellulose decreased density and mechanical strength. A specific amount of calcium oxide improved the specific surface area; however, exceeding the optimal content reduced strength. The addition of calcium hydroxide suspension yielded better results. The optimal composition was identified in catalysts containing calcium oxide and magnesium oxide. Thermal analysis confirmed phase transformations occurring at different temperatures, contributing valuable insights into the material behavior and catalytic properties.

Keywords

processing
catalyst
Zeolite
physicochemical properties
metal oxides
surface area
active components
porosity
thermal transformations.
thermal analysis

Authors

Kucharov Azizbek, Dusmatova Anzirat, Toshboboyeva Rano, Yusupov Farkhod, Sultonov Sadulla

References:

  1. Derouane, Eric G., et al. "Synthesis and characterization of ZSM-5 type zeolites I. physico-chemical properties of precursors and intermediates." Applied catalysis 1.3-4 (1981): 201-224.
  2. Cruciani, Giuseppe. "Zeolites upon heating: Factors governing their thermal stability and structural changes." Journal of Physics and Chemistry of Solids 67.9-10 (2006): 1973-1994.
  3. Yusupov, F., & Khursandov, B. (2024). Working Out The Optimal Conditions For Obtaining Import-Substituting Polymer Sulfur For The Oil And Gas And Rubber Industry. Science and innovation, 3(A10), 167-170.
  4. G Temirov et al. Study of phosphogypsum conversion from Kyzylkum phosphorites with soda ash solution. 2023 IOP Conf. Ser. Earth Environ. Sci. 1142 012066, DOI: 10.1088/1755-1315/1142/1/012066
  5. Khursandov, B. Sh., Kucharov, A. A. U., & Yusupov, F. M. (2022). Study of the properties of sulfur bitumen obtained on the basis of modified polymer sulfur. Universum: technical sciences, (12-6 (105)), 21-25.
  6. Yusupov, F. M., Mamanazarov, M. M. U., Kucharov, A. A. U., & Saidobbozov, S. Sh. (2020). Properties of spherical granules based on aluminum oxide. Universum: chemistry and biology, (3-1 (69)), 59-63.
  7. Yusupov Farkhod, Аzizjon Qurbonov, Kucharov Azizbek, Yodgorov Normahmad RESULTS OF PHYSICOCHEMICAL ANALYSIS OF COMPOSITE BITUMEN MASTICATIONS DEVELOPED FOR PROTECTION OF GAS PIPES FROM CORROSION // European Journal of Technical and Natural Sciences . 2025. №2 . URL: https://ppublishing.org/archive/publication/1432-results-of-physicochemical-analysis-of-compos
  8. Yusupov, F., Kucharov, A., Baymatova, G., Shukurullayev, B., & Yuldashev, R. (2023, August). Development and study of adsorption properties of a new sulfur polyvinyl chloride cation exchanger for water treatment. In IOP Conference Series: Earth and Environmental Science (Vol. 1231, No. 1, p. 012027). IOP Publishing.
  9. Kucharov, Azizbek, et al. "Scientific analysis of the development of new types of flotation reagents used in coal enrichment." EUREKA: Physics and Engineering 2 (2025): 32-39.
  10. Xursandov, Bobomurod, et al. "Study of changes in the physical and mechanical properties of sulfur asphalt concrete mixture based on polymer sulfur." AIP Conference Proceedings. Vol. 3045. No. 1. AIP Publishing, 2024.
  11. Piccione, Patrick M., et al. "Thermochemistry of pure-silica zeolites." The Journal of Physical Chemistry B 104.43 (2000): 10001-10011.
  12. Kucharov, Azizbek, et al. "Development of technology for water concentration of brown coal without use and use of red waste in this process as a raw material for colored glass in the glass industry." E3S Web of Conferences. Vol. 264. EDP Sciences, 2021.
  13. Ozin, Geoffrey A., Alex Kuperman, and Andreas Stein. "Advanced zeolite, materials science." Angewandte Chemie International Edition in English 28.3 (1989): 359-376.
  14. Qurbonov, Аzizjon, Azizbek Kucharov, and Farxod Yusupov. "Development of a technology for obtaining an anti-corrosion coating for gas pipelines." AIP Conference Proceedings. Vol. 3102. No. 1. AIP Publishing, 2024.

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