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题名: STUDY OF REDUCTION BEHAVIOURS OF MOLYBDENA ON MoO3/Al2O3, MoO3/TiO2 AND NiO-MoO3/TiO2 SYSTEMS BY XPS
作者: Xiong Guoxing1;  Tan Changqing1;  Wang Hongli1
刊名: ACTA PHYSICO-CHIMICA SINICA
发表日期: 1989
DOI: 10.3866/PKU.WHXB19890323
卷: 5, 期:3, 页:370-376
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: The H-2 reduction behaviours of MoO3/Al2O3, MoO3/TiO2 and NiO-MoO3/TiO2 samples prepared by impregnation method were studied at various temperatures for different times by XPS technique. The record XPS spectra of Mo3d from those samples were treated by computer curve fitting program to measure the distribution of various molybdenum oxide species with different valence states. The results of computer fitting shows that there areMo(VI), Mo(V) and Mo(IV) on the all of reduced samples. However, after H-2 reductonin same way, the percentage of low valence species Mo(V) and Mo(IV) on the MoO3/TiO2 is much higher than on the MoO3/Al2O3 (Fig. 2). For example, after H-2 treatement at 500 degrees C for 2 hrs., Mo(IV) species on the surface of MoO3/TiO2 samples is about 60% and it is three times higher than what is found on the MoO3/Al2O3 sample. In addition, the reduction of molybdena on TiO2 support is much easier and faster than on Al2O3 support (Fig. 2). A detail discussion about the interaction between molybdena and carries was presented. It was suggested that TiO2 is certainly involved in the reduction and oxidation process of molybdenum oxide species on the surface of it.
语种: 英语
WOS记录号: WOS:000207572200023
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141881
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, Dalian, Peoples R China

Recommended Citation:
Xiong Guoxing,Tan Changqing,Wang Hongli. STUDY OF REDUCTION BEHAVIOURS OF MOLYBDENA ON MoO3/Al2O3, MoO3/TiO2 AND NiO-MoO3/TiO2 SYSTEMS BY XPS[J]. ACTA PHYSICO-CHIMICA SINICA,1989,5(3):370-376.
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