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Phase transformation in the surface region of zirconia detected by UV Raman spectroscopy
Li, MJ; Feng, ZH; Xiong, G; Ying, PL; Xin, Q; Li, C
刊名JOURNAL OF PHYSICAL CHEMISTRY B
2001-08-30
DOI10.1021/jp010526l
105期:34页:8107-8111
收录类别SCI
文章类型Article
部门归属5073
项目归属503
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]SULFATED ZIRCONIA ; ZRO2 ; CATALYSTS ; STABILITY ; ION
英文摘要The phase transformation of zirconia from tetragonal to monoclinic is characterized by UV Raman spectroscopy, visible Raman spectroscopy, and XRD. Electronic absorption Of ZrO2 in the UV region makes UV Raman spectroscopy more sensitive at the surface region than XRD or visible Raman spectroscopy. Zirconia changes from the tetragonal phase to the monoclinic phase with calcination temperatures elevated and monoclinic phase is always detected first by UV Raman spectroscopy for the samples calcined at lower temperatures than that by XRD and visible Raman spectroscopy. When the phase of zirconia changes from tetragonal to monoclinic, the slight changes of the phase at very beginning can be detected by UV Raman spectroscopy. UV Raman spectra clearly indicate that the phase transition takes place initially at the surface regions. It is found that the phase change from tetragonal to monoclinic is significantly retarded when amorphous Zr(OH)(4) was agglomerated to bigger particles and the particle agglomeration of amorphous zirconium hydroxide is beneficial to the stabilization of t-ZrO2 phase.
语种英语
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WOS记录号WOS:000170729000009
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被引频次:183[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/91265
专题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
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Li, MJ,Feng, ZH,Xiong, G,et al. Phase transformation in the surface region of zirconia detected by UV Raman spectroscopy[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2001,105(34):8107-8111.
APA Li, MJ,Feng, ZH,Xiong, G,Ying, PL,Xin, Q,&Li, C.(2001).Phase transformation in the surface region of zirconia detected by UV Raman spectroscopy.JOURNAL OF PHYSICAL CHEMISTRY B,105(34),8107-8111.
MLA Li, MJ,et al."Phase transformation in the surface region of zirconia detected by UV Raman spectroscopy".JOURNAL OF PHYSICAL CHEMISTRY B 105.34(2001):8107-8111.
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