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arXiv · 2302.06876

Model of destruction of montmorillonite crystal structure in a microwave field

Valery N. Makarov·Olga N. Kanygina
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Abstract

We address amorphization of montmorillonite crystal structure. Powdered montmorillonite samples with an effective particle diameter 630 micrometers were treated by a microwave field with frequency 2,45 GHz and power 750 W for ten minutes in different environments. The first sample was treated in an air environment, the second one in a humid environment. The third sample was a ceramic mass with 10 percent concentration of mixing water (with respect to the total mass). The model describing amorphization is based on results of X-ray analysis. Activation energies were evaluated for covalent and ionic bounds of oxygen ions, hydroxyl groups, and silicon (aluminum) ions. It is shown that the amorphization is carried out in four stages. In fractions of the energy consumption of the last stage the first one consumes 7-9 percent, the second one takes 13-15 percent, and the third one takes 49-59 percent.

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Valery N. Makarov, Olga N. Kanygina. 2023-02-14. Model of destruction of montmorillonite crystal structure in a microwave field. https://doi.org/10.17586/2220-8054-2020-11-2-153-160

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