Physicochemical Analysis of Bentonite Used in The Preparation of Catalysts for Methanol and Dimethyl Ether Synthesis

Normurot Fayzullaev; Jasur Shukurov; Aziz Husenov; Kamola Ziyadulloyeva; Damir Kho‘jakulov; Durdona Abdugapparova; Dilshoda Kosimova

Authors

Normurot Fayzullaev DSc, Professor, Department of Polymer Chemistry and Chemical Technology, Samarkand State University named after Sharof Rashidov, Samarkand, Uzbekistan
Jasur Shukurov PhD, Assistant, Department of Polymer Chemistry and Chemical Technology, Institute of Biochemistry, Samarkand State University named after Sharof Rashidov, Republic of Uzbekistan, Samarkand, Uzbekistan
Aziz Husenov Department of Polymer Chemistry and Chemical Technology, Samarkand State University named after Sharof Rashidov, Samarkand, Uzbekistan
Kamola Ziyadulloyeva Department of Polymer Chemistry and Chemical Technology, Samarkand State University named after Sharof Rashidov, Samarkand, Uzbekistan
Damir Kho‘jakulov Department of Polymer Chemistry and Chemical Technology, Samarkand State University named after Sharof Rashidov, Samarkand, Uzbekistan
Durdona Abdugapparova Department of Polymer Chemistry and Chemical Technology, Samarkand State University named after Sharof Rashidov, Samarkand, Uzbekistan
Dilshoda Kosimova Department of Polymer Chemistry and Chemical Technology, Samarkand State University named after Sharof Rashidov, Samarkand, Uzbekistan

Keywords:

Betonies clay, specific surface area, porosity

Abstract

The article presents a method of purification of obtaining betonies clay for use in catalysis. It was found that the cleaning process includes the stages of centrifugation, drying and mechanical activation. Clay cleaning frees it from impurities and increases the proportion of the useful component - the sorption-active mineral montmorillonite. The porosity of the BET method was determined (measurement of specific surface area and porosity). The accuracy and standardization of the method for determining the adsorption activity have been carried out. An exponential dependence of the adsorption activity on the weight of the sample, (1.0 g), sorption time (35 min) and the equilibrium concentration of the dye solution (39 ml 0.15%) were established. The physicochemical and textural properties of betonies clay for the use of catalysis have been studied. It was found that bentonite clay for use in catalysis is a light gray powder, odorless, practically insoluble in water and organic solvents, with a particle size of less than 0.3 mm.

References

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Physicochemical Analysis of Bentonite Used in The Preparation of Catalysts for Methanol and Dimethyl Ether Synthesis

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