Catalytic Behaviour of Mesoporous Cobalt-Aluminum Oxides for CO Oxidation

ANKUR BORDOLOI; MIGUEL SÁNCHEZ; HESHMAT NOEI; STEFAN KALUZA; YUEMIN WANG; WOLFGANG GRÜNERT; MARTIN MUHLER

Journal of Catalysts

Hindawi Publishing Corporation

Lugar: New York; Año: 2014 vol. 2014 p. 1 - 9

Ordered mesoporous materials are promising catalyst supports due to their uniform pore size distribution, high specific surface area and pore volume, tunable pore sizes, and long-range ordering of the pore packing. The evaporation-induced self-assembly (EISA) process was applied to synthesize mesoporous mixed oxides, which consist of cobalt ions highly dispersed in an alumina matrix.The characterization of the mesoporous mixed cobalt-aluminum oxides with cobalt loadings in the range from 5 to 15wt% and calcination temperatures of 673, 973, and 1073K indicates that Co2+ is homogeneously distributed in the mesoporous alumina matrix. As a function of the Co loading, different phases are present comprising poorly crystalline alumina and mixed cobalt aluminum oxides of the spinel type.The mixed cobalt-aluminum oxides were applied as catalysts in CO oxidation and turned out to be highly active.