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题名: Structural features and catalytic properties of Pt/CeO2 catalysts prepared by modified reduction-deposition techniques
作者: Tang, XL;  Zhang, BC;  Li, Y;  Xu, YD;  Xin, Q;  Shen, WJ
关键词: complete oxidation ;  DME ;  HCHO liquid phase reduction ;  modified polyol method ;  Pt/CeO2
刊名: CATALYSIS LETTERS
发表日期: 2004-09-01
卷: 97, 期:3-4, 页:163-169
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
英文摘要: The structural features and catalytic properties of Pt/CeO2 catalysts prepared by liquid phase reduction-deposition techniques with formaldehyde and ethylene glycol as reducing agents, respectively, were investigated. TPR and CO pulse titration measurements revealed that smaller particle size and uniform dispersion of platinum were achieved by modified polyol preparation process, which is beneficial to generate appropriate Pt-O-Ce chemical bonding. XPS analysis further demonstrated the presence of strong metal-support interaction in above Pt/CeO2 catalyst. It was observed that the reducing ability and the solvent effect play important roles in controlling the formation of nuclei as well as its growth rate. The sample prepared by modified polyol method exhibited higher catalytic activities and longer stability for the complete oxidation of dimethyl ether than Pt/CeO2 catalyst prepared by HCHO liquid phase reduction.
关键词[WOS]: DIMETHYL ETHER ;  OXIDATION ;  CO ;  NANOPARTICLES ;  NANOCLUSTERS ;  CEO2 ;  GAS ;  RU ;  PD
语种: 英语
WOS记录号: WOS:000223403000010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138461
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Tang, XL,Zhang, BC,Li, Y,et al. Structural features and catalytic properties of Pt/CeO2 catalysts prepared by modified reduction-deposition techniques[J]. CATALYSIS LETTERS,2004,97(3-4):163-169.
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