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High Activity of Au/gamma-Fe2O3 for CO Oxidation: Effect of Support Crystal Phase in Catalyst Design
Zhao, Kunfeng1,2,3; Tang, Hailian1,2,3,4; Qiao, Botao1; Li, Lin1; Wang, Junhu1,2,3
关键词Gold Co Oxidation Redox Gamma-fe2o3 Catalyst Design
刊名ACS CATALYSIS
2015-06-01
DOI10.1021/cs5020496
5期:6页:3528-3539
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]SINGLE-ATOM CATALYSIS ; GAS SHIFT REACTION ; LOW-TEMPERATURE ; GOLD CATALYSTS ; CARBON-MONOXIDE ; SELECTIVE OXIDATION ; FERRIC HYDROXIDE ; OXIDE NANOPARTICLES ; GROUP METALS ; OXYGEN
英文摘要Au/gamma-Fe2O3 and Au/alpha-Fe2O3 catalysts with identical size of Au nanoparticles, chemical state of Au species, and amount of surface OW group were prepared. The Au/gamma-Fe2O3 catalyst exhibited exceptionally high activity, regardless of the heat treatments. The COTPR, sequential pulse reaction, and in situ Raman spectra demonstrate that the much higher activity of Au/gamma-Fe2O3 originated from its higher redox property at low temperature. Systematic study shows that this higher-redox-property-based higher activity could be extended to gamma-Fe2O3-supported Pt-group metals and to other reactions that follow Mars-Van Krevelen mechanism. This finding may provide a new avenue for catalyst improvement or development by choosing the suitable crystal phase of the oxide support.
语种英语
WOS记录号WOS:000355964300040
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/146309
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Mossbauer Effect Data Ctr, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Catalysts & New Mat Aerosp, Dalian 116023, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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GB/T 7714
Zhao, Kunfeng,Tang, Hailian,Qiao, Botao,et al. High Activity of Au/gamma-Fe2O3 for CO Oxidation: Effect of Support Crystal Phase in Catalyst Design[J]. ACS CATALYSIS,2015,5(6):3528-3539.
APA Zhao, Kunfeng,Tang, Hailian,Qiao, Botao,Li, Lin,&Wang, Junhu.(2015).High Activity of Au/gamma-Fe2O3 for CO Oxidation: Effect of Support Crystal Phase in Catalyst Design.ACS CATALYSIS,5(6),3528-3539.
MLA Zhao, Kunfeng,et al."High Activity of Au/gamma-Fe2O3 for CO Oxidation: Effect of Support Crystal Phase in Catalyst Design".ACS CATALYSIS 5.6(2015):3528-3539.
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