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Low Pt Loading High Catalytic Performance of PtFeNi/Carbon Nanotubes Catalysts for CO Preferential Oxidation in Excess Hydrogen I: Promotion Effects of Fe and/or Ni
Chen, Limin1,2; Ma, Ding2,3; Zhang, Zhen2; Guo, Yuanyuan1; Ye, Daiqi1; Huang, Bichun1
关键词Low Pt Loading Fe/ni Promoted Pt Catalysts Carbon Nanotubes Co Preferential Oxidation (Prox)
刊名CATALYSIS LETTERS
2012-08-01
DOI10.1007/s10562-012-0850-0
142期:8页:975-983
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]CARBON NANOTUBES ; ACTIVATED CARBON ; SELECTIVE OXIDATION ; H-2-RICH STREAM ; RICH STREAM ; MECHANISM ; PLATINUM ; MONOXIDE ; ABSENCE ; METALS
英文摘要The commercial carbon nanotubes (CNTs-o) and purified carbon nanotubes (CNTs-p) have been utilized to prepare Pt(FeNi)/CNTs catalysts for CO preferential oxidation (PROX) in H-2 rich stream. The 3 wt%Pt0.41 %Fe 0.35 %Ni/CNTs-p catalyst after activation at 500 A degrees C in H-2 can almost completely remove CO at 6 A degrees C in feed gas containing 1 % CO, 0.5 % O-2 (volume ratio) and H-2 balance. CNTs-o supported 3 wt% Pt can also remove CO almost completely at room temperature, after activation at 500 A degrees C in the feed gas. And this catalyst can keep high activity, high selectivity and high stability for PROX of CO at room temperature. These catalysts are the most effective catalysts for PROX of CO with much lower Pt loading until so far. H-TPR, XRD, HRTEM and reaction results indicate that the Fe and/or Ni precursors have been reduced to metallic state after activation in H-2 which can be oxidized to coordinatively unsaturated FeOx and/or NiOx active species after exposure to feed gas. XPS data point out that over oxidation of Fe and Pt species will deactivate the catalysts seriously. The high catalytic performance is mainly due to the promotion effects of in situ formed coordinatively unsaturated FeOx and/or NiOx species and the unique properties of CNTs.
语种英语
WOS记录号WOS:000307292800007
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/138030
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, Guangdong Prov Key Lab Atmospher Environm & Pollu, Coll Environm Sci & Engn, 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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Chen, Limin,Ma, Ding,Zhang, Zhen,et al. Low Pt Loading High Catalytic Performance of PtFeNi/Carbon Nanotubes Catalysts for CO Preferential Oxidation in Excess Hydrogen I: Promotion Effects of Fe and/or Ni[J]. CATALYSIS LETTERS,2012,142(8):975-983.
APA Chen, Limin,Ma, Ding,Zhang, Zhen,Guo, Yuanyuan,Ye, Daiqi,&Huang, Bichun.(2012).Low Pt Loading High Catalytic Performance of PtFeNi/Carbon Nanotubes Catalysts for CO Preferential Oxidation in Excess Hydrogen I: Promotion Effects of Fe and/or Ni.CATALYSIS LETTERS,142(8),975-983.
MLA Chen, Limin,et al."Low Pt Loading High Catalytic Performance of PtFeNi/Carbon Nanotubes Catalysts for CO Preferential Oxidation in Excess Hydrogen I: Promotion Effects of Fe and/or Ni".CATALYSIS LETTERS 142.8(2012):975-983.
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