najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2020-11-2-153-160najo-438Research ArticlePHYSICSФИЗИКАModel of destruction of montmorillonite crystal structure in a microwave fieldMakarovN. V.

Victory Ave. 13, Orenburg, 460018

makarsvet13@gmail.comKanyginaO. N.

Victory Ave. 13, Orenburg, 460018

Orenburg State UniversityRussian Federation202030072025112153–160Copyright © Makarov N.V., Kanygina O.N., 20252025Makarov N.V., Kanygina O.N.Makarov N.V., Kanygina O.N.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/438

We address amorphization of montmorillonite crystal structure. Powdered montmorillonite samples with an effective particle diameter D ≤630µm were treated by microwave field with the 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% 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 covalently and ionically bound 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%, the second one takes 13÷15%, and the third one takes 49÷59%.

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The authors declare that there are no conflicts of interest present.