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题名: Factors influencing the catalytic activity of SBA-15-supported copper nanoparticles in CO oxidation
作者: Tu, CH;  Wang, AQ;  Zheng, MY;  Wang, XD;  Zhang, T
通讯作者: 张涛
关键词: copper nanoparticle ;  SBA-15 ;  catalysis ;  CO oxidation
刊名: APPLIED CATALYSIS A-GENERAL
发表日期: 2006-01-04
DOI: 10.1016/j.apcata.2005.08.035
卷: 297, 期:1, 页:40-47
收录类别: SCI
文章类型: Article
部门归属: 15
项目归属: 1501
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Life Sciences & Biomedicine
类目[WOS]: Chemistry, Physical ;  Environmental Sciences
研究领域[WOS]: Chemistry ;  Environmental Sciences & Ecology
英文摘要: Copper nanoparticles were deposited onto mesoporous SBA-15 support via two different routes: post-grafting method and incipient wet impregnation method. Both XRD and TEM reveal that the post-grafting can make Cu particles very small in size and highly dispersed into channels of SBA-15, while the impregnation method mainly forms large Cu particles on the external surface of SBA-15. TPR experiments show that CuO species formed by the post-grafting method is more reducible than that prepared by the impregnation method. The catalytic activity tests for CO oxidation manifests that the sample prepared by the post-grafting method has a much higher activity than that prepared by the impregnation method, with a lowering of 50 degrees C for T-50, showing a strong dependence of catalytic activity on the size and dispersion of Cu particles. Besides the preparation procedure, other factors including calcination temperature, reduction treatment, copper loading as well as the feed composition, have an important effect on the catalytic activity. The best performance was obtained when the catalyst was calcined at 500 degrees C and reduced at 550 degrees C. The calcination and reduction treatment at high temperature have been found to be necessary to completely remove the organic residue and to generate active metallic copper particles. (c) 2005 Elsevier B.V. All rights reserved.
关键词[WOS]: CARBON-MONOXIDE OXIDATION ;  GOLD NANOPARTICLES ;  MESOPOROUS SILICA ;  SELECTIVE OXIDATION ;  AU NANOPARTICLES ;  OXIDE CATALYSTS ;  TEMPERATURE ;  PERFORMANCE ;  HYDROGEN ;  AU/ALPHA-FE2O3
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000234667700006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/93261
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, Liaoning, Peoples R China

Recommended Citation:
Tu, CH,Wang, AQ,Zheng, MY,et al. Factors influencing the catalytic activity of SBA-15-supported copper nanoparticles in CO oxidation[J]. APPLIED CATALYSIS A-GENERAL,2006,297(1):40-47.
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