Thermal analysis and FTIR spectroscopy of synthetic clay mineral mixtures

0532835 - ÚGN 2021 RIV HU eng J - Článek v odborném periodiku
Plevová, Eva - Vaculíková, Lenka - Valovičová, Věra
Thermal analysis and FTIR spectroscopy of synthetic clay mineral mixtures.
Journal of Thermal Analysis and Calorimetry. Roč. 142, č. 1 (2020), s. 507-518. ISSN 1388-6150. E-ISSN 1588-2926
Grant CEP: GA MŠMT(CZ) LO1406
Institucionální podpora: RVO:68145535
Klíčová slova: clay minerals * thermal analysis * infrared spectroscopy
Obor OECD: Mineralogy
Impakt faktor: 4.626, rok: 2020
Způsob publikování: Omezený přístup
https://link.springer.com/article/10.1007/s10973-020-09527-9

This study is focused on IR spectroscopy and TG/DTA analysis and their contribution to the identification of clay minerals in two-component mixtures. Identifying clay minerals in such mixtures by means of thermal analysis is often complicated by the similarity of the thermal effects of the individual clay components. The main problem is overlapping thermal effects of clay minerals or thermal effects related to accessory minerals (calcite, quartz, etc.) on DTA curve. The same problem also appears in the identification of mixed clay mineral structures by infrared spectroscopy. There are also more or less overlapping absorption bands in the infrared spectra for the mixtures of clay minerals. In this paper, the prepared clay mixtures were supposed to partially simulate the natural mixed clay structures and a minimum content of detectable minerals in clay mixtures were determined according to characteristic peaks on the DTA curves and absorption bands in FT-IR spectra. The obtained results can be effectively used to solve problems in identification of clay minerals in sedimentary rocks, which is very important for subsequent applications in geotechnical,
geothermal, and mining activities.

Trvalý link: http://hdl.handle.net/11104/0311223