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题名: Pt/MnOx-CeO2 catalysts for the complete oxidation of formaldehyde at ambient temperature
作者: Tang, Xingfu1;  Chen, Junli1;  Huang, Xiumin1;  Xu, Yide1;  Shen, Wenjie1
关键词: MnOx-CeO2 mixed oxides ;  Pt/MnOx-CeO2 catalyst ;  complete oxidation ;  formaldehyde ;  platinum precursor
刊名: APPLIED CATALYSIS B-ENVIRONMENTAL
发表日期: 2008-05-30
DOI: 10.1016/j.apcatb.2007.12.007
卷: 81, 期:1-2, 页:115-121
收录类别: SCI
文章类型: Article
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: MnOx-CeO2 mixed oxides with a Mn/(Mn + Ce) molar ratios of 0-1 were prepared by a modified coprecipitation method and investigated for the complete oxidation of formaldehyde. The MnOx-CeO2 with Mn/(Mn + Ce) molar ratio of 0.5 exhibited the highest catalytic activity among the MnOx-CeO2 mixed oxides. Structure analysis by X-ray powder diffraction and temperature-programmed reduction of hydrogen revealed that the formation of MnOx-CeO2 solid solution greatly improved the low-temperature reducibility, resulting in a higher catalytic activity for the oxidation of formaldehyde. Promoting effect of Pt on the MnOx-CeO2 mixed oxide indicated that both the Pt precursors and the reduction temperature greatly affected the catalytic performance. Pt/MnOx-CeO2 catalyst prepared from chlorine-free precursor showed extremely high activity and stability after pretreatment with hydrogen at 473 K. 100% conversion of formaldehyde was achieved at ambient temperature and no deactivation was observed for 120 h time-on-stream. The promoting effect of Pt was ascribed to enhance the effective activation of oxygen molecule on the MnOx-CeO2 support. (C) 2007 Elsevier B.V. All rights reserved.
关键词[WOS]: WET-OXIDATION ;  ROOM-TEMPERATURE ;  CERIUM OXIDE ;  PT/AL2O3 CATALYSTS ;  PT/TIO2 CATALYST ;  INDOOR AIR ;  ADSORPTION ;  CHLORINE ;  COMBUSTION ;  REDUCTION
语种: 英语
WOS记录号: WOS:000256603200012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140861
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, Xingfu,Chen, Junli,Huang, Xiumin,et al. Pt/MnOx-CeO2 catalysts for the complete oxidation of formaldehyde at ambient temperature[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2008,81(1-2):115-121.
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