The use of Hi-Res TGA, TG-FTIR, HT-DRIFT and HT-XRD in the study of the decomposition of La-2(C2O4)(3)center dot 10H(2)O

Authors
Vanhoyland, G Nouwen, R Van Bael, MK Yperman, J Mullens, J Van Poucke, LC
Citation
G. Vanhoyland et al., The use of Hi-Res TGA, TG-FTIR, HT-DRIFT and HT-XRD in the study of the decomposition of La-2(C2O4)(3)center dot 10H(2)O, THERMOC ACT, 354(1-2), 2000, pp. 145-151
Citations number
10
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
THERMOCHIMICA ACTA
ISSN journal
00406031 → ACNP
Volume
354
Issue
1-2
Year of publication
2000
Pages
145 - 151
Database
ISI
SICI code
0040-6031(20000717)354:1-2<145:TUOHTT>2.0.ZU;2-3
Abstract
Using a combination of various techniques, more intermediate products could be detected during the thermal decomposition of La-2(C2O4)(3). 10H(2)O tha n from conventional TGA measurements. In this way a more complete and detai led decomposition mechanism is proposed. Direct identification of the inter mediate phases with MT-DRIFT revealed the presence of another oxycarbonate La2O(CO3)(2). while with Hi-Res TGA a thermally unstable intermediate La-2( CO3)(3) was detected. All this information is consistent with the data obta ined from TG-FTIR spectroscopic measurements. (C) 2000 Elsevier Science B.V . All rights reserved.