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Catalytic behaviour of mesoporous cobalt-aluminum oxides for CO oxidation

 
: Bordoloi, Ankur; Sanchez, Miguel; Noei, Heshmat; Kaluza, Stefan; Großmann, Dennis; Wang, Yuemin; Grünert, Wolfgang; Muhler, Martin

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Fulltext ()

Journal of catalysts (2014), Art. 807545, 9 pp.
ISSN: 2314-5110
ISSN: 2314-5102
English
Journal Article, Electronic Publication
Fraunhofer UMSICHT Oberhausen ()
catalyst; oxidation

Abstract
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.

: http://publica.fraunhofer.de/documents/N-316069.html