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题名: Ce-Al Mixed Oxide with High Thermal Stability for Diesel Soot Combustion
作者: Sun Shumin1, 2;  Chu Wenling1;  Yang Weishen1
通讯作者: 杨维慎 ;  楚文玲
关键词: ceria ;  alumina ;  thermal stability ;  diffusion barrier ;  soot combustion
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2009-07-01
卷: 30, 期:7, 页:685-689
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 504
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: A series of Al-doped CeO(2) catalysts (n-AlCeO(2), where n represents the molar ratio of Cc to Al in the samples) were prepared by a citric acid complexation-combustion method and used for soot combustion. There is a strong interaction between CeO(2) and Al(2)O(3) in the mixed oxide, and some aluminum can be incorporated into the CeO(2) lattice forming a solid solution. The existence of gamma-Al(2)O(3) in the mixed oxide obviously improved the thermal stability of CeO(2) as a "diffusion barrier", which induced a higher catalytic activity of the mixed oxides compared with the pure CeO(2). For the Al-containing samples, the mobility of surface lattice oxygen seems to play an important role in soot combustion. The 30-AlCeO(2) sample exhibited the highest soot combustion activity with the temperature corresponding to the CO(2) + CO peak of 356 degrees C.
关键词[WOS]: PEROVSKITE-TYPE OXIDES ;  OXYGEN STORAGE CAPACITY ;  SIMULTANEOUS REMOVAL ;  CATALYTIC PERFORMANCE ;  CERIA-ZIRCONIA ;  OXIDATION ;  CEO2-ZRO2 ;  NOX ;  TEMPERATURE ;  POTASSIUM
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000268922300018
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/101969
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
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Sun Shumin,Chu Wenling,Yang Weishen. Ce-Al Mixed Oxide with High Thermal Stability for Diesel Soot Combustion[J]. CHINESE JOURNAL OF CATALYSIS,2009,30(7):685-689.
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