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题名: Performance and characterization of supported metal catalysts for complete oxidation of formaldehyde at low temperatures
作者: Peng, Jiaxi;  Wang, Shudong
通讯作者: 王树东
关键词: catalytic oxidation ;  formaldehyde ;  titania ;  supported platinum catalyst
刊名: APPLIED CATALYSIS B-ENVIRONMENTAL
发表日期: 2007-05-11
DOI: 10.1016/j.apcatb.2006.12.012
卷: 73, 期:3-4, 页:282-291
收录类别: SCI
文章类型: Article
部门归属: 9
项目归属: 901
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Engineering, Environmental ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: Activities of a series of metals (Pt, Pd, Rh, Cu, Mn) supported on TiO2 were investigated for the catalytic oxidation of formaldehyde. Among them, Pt/TiO2 was found to be the most promising catalyst. Nitrogen adsorption, hydrogen chemisorption, X-ray diffraction (XRD), transmission electron microscopy (TEM) and temperature programmed reduction (TPR) by H-2 were used to characterize the platinum catalysts. Using Ce0.8Zr0.2O2, Ce0.2Zr0.8O2, SiO2 as supports instead of TiO2, the activity sequence of 0.6 wt.% platinum with respect to the supports is TiO2 > SiO2 > Ce0.8Zr0.2O2 > Ce0.2Zr0.8O2, and this appears to be correlated with the dispersion of platinum on supports rather than the specific surface areas of the catalysts. Platinum loading on TiO2 has a great effect on the catalytic activity, and 0.6 wt.% Pt/TiO2 catalyst was observed to be the most active, which could be attributed to the well-dispersed platinum surface phase. The reduction temperature greatly affects the particle size and, consequently, the catalytic activity. The smaller particle size of platinum, due to its high dispersion on support, has a positive effect on catalytic performance. Increasing formaldehyde concentration and space velocity exhibits an inhibiting effect on the catalytic activity. (c) 2006 Elsevier B.V. All rights reserved.
关键词[WOS]: VOLATILE ORGANIC-COMPOUNDS ;  ROOM-TEMPERATURE ;  OXIDE CATALYSTS ;  PT/TIO2 CATALYST ;  COMBUSTION ;  PALLADIUM ;  PLATINUM ;  DECOMPOSITION ;  ADSORPTION ;  IGNITION
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000246539900008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/98955
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, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Peng, Jiaxi,Wang, Shudong. Performance and characterization of supported metal catalysts for complete oxidation of formaldehyde at low temperatures[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2007,73(3-4):282-291.
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