期刊
CATALYSIS COMMUNICATIONS
卷 88, 期 -, 页码 60-63出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2016.09.035
关键词
Volatile organic compounds; Catalytic total oxidation; Layered double hydroxides; Cobalt oxide; Mixed metal oxides
资金
- Fuzhou University [0040-650021, 0041-600866]
- Industry-University Cooperation of Fujian Provincial Education Department of China [JA12023]
Mixed metal oxides Co5 - xCuxAl (x = 0-05) were prepared from Co-Cu-Al layered double hydroxides (LDHs) and tested for benzene total oxidation. By calcination, Co-Cu-Al LDHs were mainly transformed to (Co, Cu)(Co, Al)(2)O-4 spinels, where both Cu2+ and Al3+ cations were incorporated into the spinel structure. The incorporation of Cu significantly improved the Co oxide reducibility and remarkably enhanced the light-off activity as well as the total conversion activity, indicative a strong interaction between Cu2+ and Co3+ active sites. The optimum Co4.75Cu0.25Al spinel mixed oxide was comparable with a 03%Pd/gamma-Al2O3 catalyst, highlighting the promoting effect of structural modification with Cu. (C) 2016 Elsevier B.V. All rights reserved.
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