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Synergistic Effect of a Carbon Black Supported PtAg Non-Alloy Bimetal Nanocatalyst for CO Preferential Oxidation in Excess Hydrogen
Chen, Limin1,2; Ma, Ding2,3; Zhang, Zhen2; Guo, Yuanyuan1; Ye, Daiqi1; Huang, Bichun1
关键词Heterogeneous Catalysis Hydrogen Platinum Silver Supported Catalysts
刊名CHEMCATCHEM
2012-12-01
DOI10.1002/cctc.201200365
4期:12页:1960-1967
收录类别SCI
文章类型Article
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]SELECTIVE OXIDATION ; CATALYTIC-OXIDATION ; OXYGEN REDUCTION ; SILVER CATALYSTS ; AG NANOPARTICLES ; RICH STREAM ; FUEL-CELL ; SURFACE ; SILICA ; PLATINUM
英文摘要Carbon black (CB) supported PtAg non-alloy bimetal catalysts were prepared by incipient wetness impregnation and evaluated for CO preferential oxidation in excess H2 (PROX). PtAg/CB catalysts exhibited an evident synergistic effect. The catalyst support selection is crucial to the synergistic effect. X-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning TEM energy dispersive X-ray analysis (STEM-EDX) characterization indicates no alloy was formed over the PtAg/CB catalyst after activation in H2 at 500 degrees C for 2 h. However, temperature-programmed reduction (TPR) and XRD data evidenced strong interactions between platinum and silver, as a result of their simultaneous reduction and high temperature activation. The Pt?Ag interactions result in high catalytic performance and the synergistic effects. This is another example of model catalyst research translating to real world catalysis. PtAg non-alloy catalysts may also be effective in eliminating or alleviating catalyst poisoning by CO-like intermediates in direct liquid fuel cells.
语种英语
WOS记录号WOS:000311698800015
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/142890
专题中国科学院大连化学物理研究所
作者单位1.S China Univ Technol, Coll Environm Sci & Engn, Guangdong Prov Key Lab Atmospher Environm & Pollu, Guangzhou 510006, Guangdong, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
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GB/T 7714
Chen, Limin,Ma, Ding,Zhang, Zhen,et al. Synergistic Effect of a Carbon Black Supported PtAg Non-Alloy Bimetal Nanocatalyst for CO Preferential Oxidation in Excess Hydrogen[J]. CHEMCATCHEM,2012,4(12):1960-1967.
APA Chen, Limin,Ma, Ding,Zhang, Zhen,Guo, Yuanyuan,Ye, Daiqi,&Huang, Bichun.(2012).Synergistic Effect of a Carbon Black Supported PtAg Non-Alloy Bimetal Nanocatalyst for CO Preferential Oxidation in Excess Hydrogen.CHEMCATCHEM,4(12),1960-1967.
MLA Chen, Limin,et al."Synergistic Effect of a Carbon Black Supported PtAg Non-Alloy Bimetal Nanocatalyst for CO Preferential Oxidation in Excess Hydrogen".CHEMCATCHEM 4.12(2012):1960-1967.
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