Publication:
Transformation of Structure and Adsorption Properties of Montmorillonite under Thermochemical Treatment

Дата
2019
Авторы
Krupskaya, V. V.
Zakusin, S. V.
Dorzhieva, O. V.
Chernov, M. S.
Tyupina, E. A.
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Научные группы
Организационные подразделения
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Организационная единица
Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
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Аннотация
© 2019, Pleiades Publishing, Ltd.Abstract—Complex studies revealed transformations of composition, structure, and properties of bentonite clays of the Taganskoe (Kazakhstan) and Dahskovskoe (Moscow oblast) deposits under thermochemical treatment. Leaching of cations from interlayer and octahedral sites, protonation of interlayer and OH-groups lead to the modification of interlayer and 2 : 1 layer composition. This, in turn, causes significant changes of properties: a decrease of cation exchange capacity owing to the decrease of layer charge and increase of specific surface through the decomposition and partial amorphization of structure. Bentonites of the Dashkovskoe deposit showed the higher resistance to the thermochemical impact than bentonites of the Taganskoe deposit owing to the isolating action of organic matter. Obtained results demonstrated that bentonite clays preserve most of adsorption properties even under such strong thermochemical influence (13 М HNO3, 90°С, 5 h).
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Transformation of Structure and Adsorption Properties of Montmorillonite under Thermochemical Treatment / Krupskaya, V.V. [et al.] // Geochemistry International. - 2019. - 57. - № 3. - P. 314-330. - 10.1134/S0016702919030066
URI
https://www.doi.org/10.1134/S0016702919030066
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85061776641&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000468489200007
 https://openrepository.mephi.ru/handle/123456789/18860
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