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Journal of Chemistry
Volume 2014, Article ID 751756, 6 pages
http://dx.doi.org/10.1155/2014/751756
Research Article

Catalytic Combustion of Low Concentration Methane over Catalysts Prepared from Co/Mg-Mn Layered Double Hydroxides

1Department of Environmental Engineering, Zhejiang University, Zijingang Campus, Yuhangtang Road 388, Hangzhou 310058, China
2Zhejiang Provincial Engineering Research Center of Industrial Boiler & Furnace Flue-Gas Pollution Control, Hangzhou 310058, China

Received 22 May 2014; Accepted 4 June 2014; Published 1 July 2014

Academic Editor: Fan Dong

Copyright © 2014 Hongfeng Liu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A series of Co/Mg-Mn mixed oxides were synthesized through thermal decomposition of layered double hydroxides (LDHs) precursors. The resulted catalysts were then subjected for catalytic combustion of methane. Experimental results revealed that the Co4.5Mg1.5Mn2LDO catalyst possessed the best performance with the °C. After being analyzed via XRD, BET-BJH, SEM, H2-TPR, and XPS techniques, it was observed that the addition of cobalt had significantly improved the redox ability of the catalysts whilst certain amount of magnesium was essential to guarantee the catalytic activity. The presence of Mg was helpful to enhance the oxygen mobility and, meanwhile, improved the dispersion of Co and Mn oxides, preventing the surface area loss after calcination.