Structural Properties and Catalytic Activity of Sr-Substituted LaFeO3 Perovskite

	Structural Properties and Catalytic Activity of Sr-Substituted LaFeO3 Perovskite
	Zhang Xiaojing; Li Huaju; Li Yong; Shen Wenjie
刊名	chinese journal of catalysis
	2012-07-01
卷号	33 期号:7 页码:1109-1114
关键词	perovskite lanthanum ferrite substitution reducibility carbon monoxide oxidation methane combustion
通讯作者	申文杰
产权排序	1,1
英文摘要	partial substitution of la3+ by sr2+ in lafeo3 resulted in significant changes in its structure and catalytic activity. the perovskite structure was changed from orthorhombic in lafeo3 to nearly cubic in la0.8sr0.2feo3. replacement of la3+ by sr2+ induced a positive charge deficiency that was compensated for by the oxidation of some fe3+ to fe4+ and the generation of oxygen vacancies, which greatly promoted the reducibility of the perovskite. la0.8sr0.2feo3 gave considerably enhanced activity in co oxidation and methane combustion because the oxygen vacancies accelerated the dissociation of gaseous oxygen on the surface in co oxidation and facilitated the diffusion of lattice oxygen from the bulk to the surface during ch4 combustion.
学科主题	物理化学
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
关键词[WOS]	automotive-emissions control ; methane combustion ; surface-properties ; total oxidation ; oxides ; redox ; fe ; performance ; reduction ; stability
收录类别	SCI
语种	英语
WOS记录号	WOS:000306676600007
公开日期	2013-10-11
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/117694]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Zhang Xiaojing,Li Huaju,Li Yong,et al. Structural Properties and Catalytic Activity of Sr-Substituted LaFeO3 Perovskite[J]. chinese journal of catalysis,2012,33(7):1109-1114.
APA	Zhang Xiaojing,Li Huaju,Li Yong,&Shen Wenjie.(2012).Structural Properties and Catalytic Activity of Sr-Substituted LaFeO3 Perovskite.chinese journal of catalysis,33(7),1109-1114.
MLA	Zhang Xiaojing,et al."Structural Properties and Catalytic Activity of Sr-Substituted LaFeO3 Perovskite".chinese journal of catalysis 33.7(2012):1109-1114.