Cobalt Oxide Catalysts Supported on CeO2–TiO2 for Ethanol Oxidation and N2O Decomposition.

0479551 - ÚCHP 2018 RIV NL eng J - Journal Article
Jirátová, Květa - Kovanda, F. - Balabánová, Jana - Koloušek, D. - Klegová, A. - Pacultová, K. - Obalová, L.
Cobalt Oxide Catalysts Supported on CeO2–TiO2 for Ethanol Oxidation and N2O Decomposition.
Reaction Kinetics Mechanism and Catalysis. Roč. 12, č. 1 (2017), s. 121-139. ISSN 1878-5190. E-ISSN 1878-5204.
[Pannonian Symposium on Catalysis. Siófok, 19.09.2016-23.09.2016]
R&D Projects: GA ČR GA14-13750S
Institutional support: RVO:67985858
Keywords : cobalt oxide catalysts * ethanol total oxidation * N2O decomposition
OECD category: Chemical process engineering
Impact factor: 1.515, year: 2017

Cobalt oxide catalysts deposited on titania–ceria supports were examined in deep ethanol oxidation and N2O decomposition. Supports with various molar ratio of CeO2/TiO2 were prepared by sol–gel method and cobalt components were introduced by impregnation and subsequent calcination. It was found out that ethanol conversion at 200 °C is proportional to the CeO2/(CeO2+TiO2) molar ratio in the supports, and temperature T50 of ethanol oxidation is proportional to the amount of components reducible in the temperature range of 20–500 °C. Comparison of specific catalytic activities in both ethanol oxidation and N2O decomposition proved lower rate of N2O decomposition than that of oxidation of ethanol (approximately 25 times). The obtained results showed that ceria is the best support of cobalt oxides for both deep ethanol oxidation and N2O decomposition when reaction rates are related to unit amount of active component in the catalysts.
Permanent Link: http://hdl.handle.net/11104/0275534