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Effect of Acid Activation on the Sorption Properties of Synthetic Montmorillonite

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Abstract

The sorption capacity and porous-textural characteristics of synthetic montmorillonite subjected to acid activation in a 3M HCl solution in various modes are studied. Single-phase montmorillonite, corresponding to the chemical formula Na1.0Al1.0Mg1.0Si4O10(OH)2.H2O, is obtained under hydrothermal conditions. It is established that acid treatment of synthetic montmorillonite leads to an increase in its specific surface area (from 170 to 356 m2/g), which is accompanied by a significant decrease in the degree of adsorption of the organic dye methylene blue (from 60 to 25–30% depending on the processing mode) and lead ions (from 35 to 27%) from aqueous solutions.

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Funding

This study was carried out as part of of a state task of the Institute of Silicate Chemistry, Russian Academy of Sciences (project no. 0081-2022-0001).

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Authors and Affiliations

  1. Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences, 199034, St. Petersburg, Russia

    O. Yu. Golubeva, E. Yu. Brazovskaya & Yu. A. Alikina

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  1. O. Yu. Golubeva
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  2. E. Yu. Brazovskaya
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  3. Yu. A. Alikina
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Correspondence to O. Yu. Golubeva.

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Golubeva, O.Y., Brazovskaya, E.Y. & Alikina, Y.A. Effect of Acid Activation on the Sorption Properties of Synthetic Montmorillonite. Glass Phys Chem 48, 673–675 (2022). https://doi.org/10.1134/S1087659622600466

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  • DOI: https://doi.org/10.1134/S1087659622600466

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