期刊
CATALYSIS COMMUNICATIONS
卷 72, 期 -, 页码 105-110出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2015.09.022
关键词
Copper-cerium oxides; CO oxidation; Multishell hollow structure; Hydrogen
资金
- National Natural Science Foundation of China [21466024]
- Natural Science Foundation of Inner Mongolia [2014MS0217]
Multishell hollow CuO microbox was synthesized by a template method and the Ce(IV) nitrate solution was impregnated into the hollow cavity of the CuO support. The as-prepared catalysts were characterized by FESEM, TEM, XRD, N-2 physisorption and H-2-TPR. It is found that the alternate CuO and CeO2 multishell structure reduces the agglomeration of CuO species and improves the dispersion of CeO2. The special structure ensures even distribution of the two species in the material matrix and the optimum ratio of CeO2 to CuO provides two-component active sites with high concentration. Thus, the wider full CO conversion window and higher CO2 selectivity are achieved over the 30CeO(2)/CuO microbox catalyst. (C) 2015 Elsevier B.V. All rights reserved.
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