期刊
JOURNAL OF CATALYSIS
卷 343, 期 -, 页码 168-177出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcat.2016.02.004
关键词
Reforming; Oxidative dehydrogenation; Synthesis gas; Ethylene; CeO2 supports
资金
- U.S. Department of Energy, Office of Science [No. DE-AC0-298CH10886]
An efficient mitigation of abundantly available CO2 is critical for sustainable environmental impact as well as for novel industrial applications. Using ethane, CO2 can be catalytically converted into a useful feedstock (synthesis gas) and a value-added monomer (ethylene) via the dry reforming pathway through the C-C bond scission and the oxidative dehydrogenation pathway through the C-H bond scission, respectively. Results from the current flow-reactor study show that the precious meta} bimetallic CoPt/CeO2 catalyst undergoes the reforming reaction to produce syngas with enhanced activity and stability compared to the parent monometallic catalysts. In order to replace Pt, the activities of non-precious CoMo/CeO2 and NiMo/CeO2 are investigated and the results indicate that NiMo/CeO2 is nearly as active as CoPt/CeO2 for the reforming pathway. Furthermore, FeNi/CeO2 is identified as a promising catalyst for the oxidative dehydrogenation to produce ethylene. Density functional theory (DFT) calculations are performed to further understand the different pathways of the CoPt/CeO2 and FeNi/CeO2 catalysts. (C) 2016 Elsevier Inc. All rights reserved.
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