Number of the records: 1
Thermal behaviour of organically modified clays
- 1.
SYSNO ASEP 0393204 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Thermal behaviour of organically modified clays Author(s) Plevová, Eva (UGN-S) RID, ORCID
Vaculíková, Lenka (UGN-S) RID, ORCID
Vítámvásová, E. (CZ)
Šugárková, Věra (UGN-S) RID
Martynková, G.S. (CZ)Number of authors 5 Source Title Nano Ostrava 2013. - Ostrava : VŠB-TUO, 2013 / Holešová S. ; Martynková G. S. - ISBN 978-80-7329-361-1 Pages s. 114-114 Number of pages 1 s. Publication form Print - P Action NANO OSTRAVA 2013 - 3rd Nanomaterials and Nanotechnology Meeting Event date 17.06.2013-20.06.2013 VEvent location Ostrava Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords clay minerals ; alkylammonium cations ; intercalation ; thermal analysis Subject RIV CB - Analytical Chemistry, Separation R&D Projects ED2.1.00/03.0082 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UGN-S - RVO:68145535 Annotation The clay minerals were modified by two alkylammonium cations under sorption procedure. T X-ray powder diffraction and FT-IR spectroscopy were used to evaluate the intercalation process of organic cations int the clay structure. The organo - montmorillonites exhibited IR spectra giving evidence about sorption or intercalation of the alkylammonium cations. The enhancement of the basal spacing obtained by X-ray diffraction confirmed the intercalation process of cations into montmorillonite and vermiculite samples. Thermal behaviour of the modified clay minerals was investigated by simultaneous thermogravimetry and differential thermal analysis. The organically modified montmorillonites exhibited the higher values of temperatures related to the total melting. Also the temperatures of exotherm effects connected to recrystallization and transformation increased with the concentration of alkylammonium salts. The temperatures of dehydratation and dehydroxilation decreased with concentration of alkylammonium cations. Vermilulite samples showed generally reducing of their thermal stability. Workplace Institute of Geonics Contact Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Year of Publishing 2014
Number of the records: 1