FTIR study of hydrotalcite
Miroslava Mališová *, Michal Horňáček, Jozef Mikulec a, Pavol Hudec, Vladimír Jorík b
Department of Organic Technology, Catalysis and Petroleum Chemistry,
Faculty of Chemical and Food Technology Slovak University of Technology,
Radlinského 9, 812 37 Bratislava, Slovak Republic
a Research Institute of Petroleum and Hydrocarbon Gases,
Vlčie Hrdlo, 820 03 Bratislava, Slovak Republic
b Department of Inorganic Chemistry, Faculty of Chemical and Food Technology Slovak University of Technology,
Radlinského 9, 812 37 Bratislava, Slovak Republic
E-mail: * mamiroslava@gmail.com
Abstract: The aim of the research was the study of aluminium-magnesium hydrotalcite by FTIR analysis and detection of differences in structure due to calcination. Three types of samples were analysed. In the first two samples, cobalt was added into the structure and the third sample contained nickel and zinc. Hydrotalcite was prepared by one of the most common methods of hydrotalcite preparation, co-precipitation. After preparation, the samples were calcined at temperatures from 150 °C to 750 °C. Samples were compared in terms of calcination temperature; but in case of samples containing cobalt, two samples to each other. The most significant changes were noticed in the 500—700 cm–1 region, where a spinel structure was formed at higher calcination temperatures.
Keywords: hydrotalcite, FTIR, co-precipitation, catalyst, calcination
Full paper in Portable Document Format: acs_0312.pdf
Acta Chimica Slovaca, Vol. 11, No. 2, 2018, pp. 147—166, DOI: 10.2478/acs-2018-0021