Thermal behaviour of organically modified vermiculites

0507838 - ÚGN 2020 HU eng A - Abstract
Plevová, Eva - Vaculíková, Lenka - Valovičová, Věra - Vallová, S. - Simha Martynková, G.
Thermal behaviour of organically modified vermiculites.
Book of Abstracts, JTACC 2019. Budapest: Akadémiai Kiadó / AKCongress, 2019. s. 632-632. ISBN 978-963-454-416-6.
[Journal of Thermal Analysis and Calorimetry Conference /2./. 18.06.2019-21.06.2019, Budapest]
R&D Projects: GA MŠMT(CZ) LO1406
Institutional support: RVO:68145535
Keywords : vermiculites * thermal analysis * FT-IR spectroscopy * X-ray diffraction
OECD category: Analytical chemistry
https://static.akcongress.com/downloads/jtacc/jtacc2019-boa.pdf?_ga=2.198695083.581248388.1566472945-519590968.1547111565

The organically modified clays have achieved a broad range of application in many areas: environment protection (immobilization of contaminants), pharmacy, electrochemistry, ceramics etc. In this work, the vermiculite samples were modified by different types of alkylammonium cations by sorption procedure. X-ray powder diffraction was used to confirm the intercalation of alkylammonium cations into the vermiculite structure. Thermal behaviour of the organically modified vermiculite was investigated by simultaneous thermogravimetry and differential thermal analysis. The modification of vermiculite caused changes of the temperatures of dehydratation and dehydroxylation processes as well as total melting process in the temperature interval from 25 to 1000 °C.
Permanent Link: http://hdl.handle.net/11104/0298800