Journal
CATALYSIS COMMUNICATIONS
Volume 48, Issue -, Pages 24-28Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2014.01.017
Keywords
CO preferential oxidation; Preparation method; Successive deposition-precipitation; One-step deposition-precipitation; Temperature-operation window; Cobalt catalyst
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Funding
- National Natural Science Foundation of China [20803006]
- Chinese Ministry of Education via the Program for New Century Excellent Talents in University [NCET-12-0079]
- Key Laboratory of Oil & Gas Fine Chemicals
- Ministry of Education & Xinjiang Uyghur Autonomous Region
- Xinjiang University [XJDX0908-2011-10]
- Fundamental Research Funds for the Central Universities [DUT12LK51]
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The supported CeO2/Co3O4-MnO2/CeO2 catalyst on activated carbon (AC) prepared by a successive loading approach to support ceria, cobalt-manganese oxide and ceria on activated carbon exhibits superior catalytic activity and selectivity to Co3O4-MnO2-CeO2/AC prepared by a one-step loading for CO preferential oxidation in H-2-rich stream, although the same loading of Co, Mn and Ce was used, which illustrates that the addition of ceria doesn't always enhance catalytic performance in CO PROX reaction, and appreciate supporting method is essential. The superior catalytic activity and selectivity of developed catalyst can be ascribed to high reducibility, well dispersion, unique porous structure, and strong interaction between Co3O4-MnO2 and CeO2. (C) 2014 Elsevier B.V. All rights reserved.
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