Study of influence of calcination atmosphere on phase transformation of zirconia by UV Raman spectroscopy

	Study of influence of calcination atmosphere on phase transformation of zirconia by UV Raman spectroscopy
	Li, MJ; Feng, ZC; Zhang, J; Ying, PL; Xin, Q; Li, C
刊名	chinese journal of catalysis
	2003-11-01
卷号	24 期号:11 页码:861-866
关键词	UV Raman spectroscopy zirconia calcination atmosphere phase transformation surface
英文摘要	uv raman spectroscopy has been employed to investigate the surface phase transformation of zirconia calcined at different temperatures in different atmospheres. the calcination of samples in gas containing o-2 leads to the formation of the monoclinic phase, while the calcination in inert gas delays the formation of the crystal phase and benefits the stabilization of the tetragonal phase. the tetragonal phase in the surface region transforms easily to the monoclinic phase when the samples are exposed to air, indicating that the tetragonal phase is prone to be unstable in the surface region of the samples. it is possible that oxygen vacancies formed in the surface region in the absence of oxygen can prevent the transformation from the tetragonal phase to the monoclinic phase. when the samples are exposed to air, the elimination of these vacancies by the incorporation of oxygen facilitates the transformation from the tetragonal phase to the monoclinic phase.
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]	coke formation ; ts-1 zeolite ; zro2 ; crystallization ; stability ; framework ; catalysts ; titanium ; powders ; oxide
收录类别	SCI
语种	英语
WOS记录号	WOS:000187322500014
公开日期	2015-11-10
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/138354]
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, Peoples R China
推荐引用方式 GB/T 7714	Li, MJ,Feng, ZC,Zhang, J,et al. Study of influence of calcination atmosphere on phase transformation of zirconia by UV Raman spectroscopy[J]. chinese journal of catalysis,2003,24(11):861-866.
APA	Li, MJ,Feng, ZC,Zhang, J,Ying, PL,Xin, Q,&Li, C.(2003).Study of influence of calcination atmosphere on phase transformation of zirconia by UV Raman spectroscopy.chinese journal of catalysis,24(11),861-866.
MLA	Li, MJ,et al."Study of influence of calcination atmosphere on phase transformation of zirconia by UV Raman spectroscopy".chinese journal of catalysis 24.11(2003):861-866.