DICP OpenIR
CuO/CeO2 catalysts: Redox features and catalytic behaviors
Tang, XL; Zhang, BC; Li, Y; Xu, YD; Xin, Q; Shen, WJ
KeywordCuo/ceo2 Redox Features Chemical States Metal-support Interaction Co Oxidation
Source PublicationAPPLIED CATALYSIS A-GENERAL
2005-07-15
DOI10.1016/j.apcata.2005.04.024
Volume288Issue:1-2Pages:116-125
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Life Sciences & Biomedicine
WOS SubjectChemistry, Physical ; Environmental Sciences
WOS Research AreaChemistry ; Environmental Sciences & Ecology
WOS KeywordCARBON-MONOXIDE OXIDATION ; OXIDE COMPOSITE CATALYSTS ; CO OXIDATION ; CU/CEO2 CATALYST ; COPPER CATALYST ; CERIA ; METAL ; CU ; REDUCTION ; SPECTROSCOPY
AbstractThe reduction and oxidation features of nanostructured CuO/CeO2 catalysts prepared by the deposition-precipitation method were extensively investigated by TPR, FIF-IR and in situ XPS techniques. Both the chemical states of copper and the reduction degree of ceria could be well controlled during the reduction with hydrogen by adjusting the temperature. Noticeably, the fully reduced Cu-0 could be further oxidized into Cu+ in hydrogen by increasing the reduction temperature through the interaction between Cu-0 and lattice oxygen of ceria immigrating to the surface. Structure-reactivity relationship was established between the structural features of CuO/CeO2 formed during the pre-reduction with hydrogen and its catalytic activities for CO oxidation. It was observed that reduction with hydrogen at 473-573 K, which leads to the full presence of metallic copper in the catalyst, gives rise to higher CO conversion. These phenomena were interpreted in terms of the reduction degrees of ceria, the changes of surface morphology and the chemical states of copper species. The interface oxygen activation as well as its transfer from the interface to the adsorbed reactant was found to play decisive roles in determining the reaction rate of CO oxidation. (c) 2005 Elsevier B.V. All rights reserved.
Language英语
WOS IDWOS:000230685200016
Citation statistics
Cited Times:156[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/139857
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Tang, XL,Zhang, BC,Li, Y,et al. CuO/CeO2 catalysts: Redox features and catalytic behaviors[J]. APPLIED CATALYSIS A-GENERAL,2005,288(1-2):116-125.
APA Tang, XL,Zhang, BC,Li, Y,Xu, YD,Xin, Q,&Shen, WJ.(2005).CuO/CeO2 catalysts: Redox features and catalytic behaviors.APPLIED CATALYSIS A-GENERAL,288(1-2),116-125.
MLA Tang, XL,et al."CuO/CeO2 catalysts: Redox features and catalytic behaviors".APPLIED CATALYSIS A-GENERAL 288.1-2(2005):116-125.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Tang, XL]'s Articles
[Zhang, BC]'s Articles
[Li, Y]'s Articles
Baidu academic
Similar articles in Baidu academic
[Tang, XL]'s Articles
[Zhang, BC]'s Articles
[Li, Y]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Tang, XL]'s Articles
[Zhang, BC]'s Articles
[Li, Y]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.