Determining the cation exchange capacity of montmorillonite by simultaneous thermal analysis method
- Authors: Boeva N.M.1, Bocharnikova Y.I.1, Belousov P.E.1, Zhigarev V.V.2
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Affiliations:
- Institute of the Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry
- OOO Bentonit Khakassii
- Issue: Vol 90, No 8 (2016)
- Pages: 1525-1529
- Section: Chemical Thermodynamics and Thermochemistry
- URL: https://bakhtiniada.ru/0036-0244/article/view/168546
- DOI: https://doi.org/10.1134/S0036024416080057
- ID: 168546
Cite item
Abstract
A way of determining the cation exchange capacity of montmorillonite by simultaneous thermal analysis is developed using as an example the bentonites of the 10th Khutor deposit (Republic of Khakassia) and the Vodopadnyi area (Sakhalin Island). A correlation is established between the cation exchange capacity of smectite and its weight loss upon heating in the range of dehydration; the enthalpy of dehydration of montmorillonite; and the weight loss and the enthalpy of thermal dissociation of ethylene glycol contained in the interlayer space of the mineral’s crystal structure. These data open up new possibilities for determining the cation exchange capacity of montmorillonite, the most important technological indicator of the natural clay nanomineral.
About the authors
N. M. Boeva
Institute of the Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry
Author for correspondence.
Email: boeva@igem.ru
Russian Federation, Moscow, 119017
Yu. I. Bocharnikova
Institute of the Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry
Email: boeva@igem.ru
Russian Federation, Moscow, 119017
P. E. Belousov
Institute of the Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry
Email: boeva@igem.ru
Russian Federation, Moscow, 119017
V. V. Zhigarev
OOO Bentonit Khakassii
Email: boeva@igem.ru
Russian Federation, Chernogorsk
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