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题名: Comparative study of the vanadium species in VAPO-5 and VAPSO-5 molecular sieves
作者: Yu, JQ;  Li, MJ;  Liu, ZM;  Feng, ZC;  Xin, Q;  Li, C
刊名: JOURNAL OF PHYSICAL CHEMISTRY B
发表日期: 2002-09-05
卷: 106, 期:35, 页:8937-8943
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: By using XRD, TG-DTA, NMR, and UV resonance Raman spectroscopy, the nature and location of vanadium species between VAPO-5 and VAPSO-5 molecular sieves were comparatively studied. It was found that different vanadium species exist in VAPO-5 and VAPSO-5 molecular sieves. Polymerized vanadium oxides and bulk V(2)O(5) crystallites are the main vanadium species in VAPO-5 molecular sieves. However, in VAPSO-5 molecular sieves, tetrahedrally coordinated vanadium species are dominant. Namely, most of the vanadium species in VAPO-5 exist outside the framework, whereas most of the vanadium species in VAPSO-5 are incorporated into the framework. The formation of framework vanadium in VAPSO-5 molecular sieves is found to be associated essentially with the presence of framework silicon atoms.
关键词[WOS]: TRANSITION-METAL IONS ;  RESONANCE RAMAN-SPECTROSCOPY ;  NUCLEAR-MAGNETIC-RESONANCE ;  PHASE OXIDATION REACTIONS ;  SOLID-STATE NMR ;  CATALYTIC-PROPERTIES ;  OXIDE CATALYSTS ;  TS-1 ZEOLITE ;  ALUMINOPHOSPHATE ;  TITANIUM
语种: 英语
WOS记录号: WOS:000177758100005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139147
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, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Yu, JQ,Li, MJ,Liu, ZM,et al. Comparative study of the vanadium species in VAPO-5 and VAPSO-5 molecular sieves[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2002,106(35):8937-8943.
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