Article

Comparative Study of the Physical and Chemical Properties of Natural Bentonite Clay of the Dash-Salakhli Deposit and Synthetic Montmorillonite

Д. Б. ТагиевInstitute of Catalysis and Inorganic Chemistry, National Academy of Sciences of Azerbaijan, AZ-1143, Baku, AzerbaijanO. Yu. GolubevaGrebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences, 199034, St. Petersburg, RussiaС. А. МамедоваInstitute of Catalysis and Inorganic Chemistry, National Academy of Sciences of Azerbaijan, AZ-1143, Baku, AzerbaijanU. A. MamedovaInstitute of Catalysis and Inorganic Chemistry, National Academy of Sciences of Azerbaijan, AZ-1143, Baku, AzerbaijanN.А. ZeynalovInstitute of Catalysis and Inorganic Chemistry, National Academy of Sciences of Azerbaijan, AZ-1143, Baku, AzerbaijanYu. A. AlikinaGrebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences, 199034, St. Petersburg, RussiaE. Yu. BrazovskayaGrebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences, 199034, St. Petersburg, Russia

2022en

ABI

Abstract

The results of a study of the physicochemical properties of natural bentonite clay of the Dash-Salakhli deposit of the Republic of Azerbaijan and synthetic montmorillonite (MT) Na1.0Al1.0Mg1.0Si4O10(OH)2 H2O obtained under hydrothermal conditions are presented. The chemical and phase compositions of the samples are compared, the porous-textural and sorption characteristics are studied, the distribution of acid sites on the surface of the samples is studied, and the results of the study by IR absorption spectroscopy are presented. The sorption capacity of the samples is compared to the organic cationic dye methylene blue and the heavy metal ions from the model solutions simultaneously containing lead and copper ions. Based on the results obtained, conclusions are drawn on promising areas for the use of natural and synthetic MTs.

Identifiers

DOI: 10.1134/s1087659622020109

Citations and references

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