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题名: FT-IR Emission Spectroscopic Studies of Surface Structure of V2O5/TiO2 Catalyst
作者: Li Can1;  Zhang Hui1;  Wang Kie-Li1;  Xin Qin1
关键词: FT-IR emission spectroscopy ;  Catalyst characterization ;  V2O5/TiO2 ;  Surface structure
刊名: ACTA PHYSICO-CHIMICA SINICA
发表日期: 1994
DOI: 10.3866/PKU.WHXB19940109
卷: 10, 期:1, 页:33-37
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: FT-IR emission spectroscopy has been used to study the surface structure V2O5/TiO2 catalyst with V2O5 loadings of 0.4%, 2% and 10% wt. prepared by of TiO2 in NH4VO3 solution. The IR emission spectra were recorded insitu the course of a calcination of the impregnated catalyst from 100 degrees C to 500 degrees C. ammonium vanadate supported on TiO2 was found to be decomposition more easily pure NH4VO3 most possibly owing to the chemical interaction between vanadate 1102. For 10% wt. V2O5/TiO2 catalyst the IR peaks due to V2O5 phase appeared catalyst was calcined at 200-400 degrees C. when the catalyst was calcined at 500 degrees C of V2O5 phase were evidently reduced indicating that the part of V2O5 phase spreaded into highly dispersed vanadium oxide on TiO2. For the catalysts with - loading of vanadium,the IR peaks due to V2O5 phase decreased and a broad peak from 1050cm(-1) to 900cm(-1) became prominent especially after a calcination at 500 The broad peak was tentatively assigned to the highly dispersed VOx species which - be the two-dimensional vanadium oxide. This study also demonstrated that FT-IR spectroscopy is a very sensitive technique for investigating the surface structure oxide catalyst.
语种: 英语
WOS记录号: WOS:000207588800009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142760
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.Acad Sinica, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Li Can,Zhang Hui,Wang Kie-Li,et al. FT-IR Emission Spectroscopic Studies of Surface Structure of V2O5/TiO2 Catalyst[J]. ACTA PHYSICO-CHIMICA SINICA,1994,10(1):33-37.
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