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题名: Influence of preparation conditions on catalytic activity of heteropolyphosphatotungstate catalyst
作者: Yang, XG;  Zhang, SJ;  Li, M;  Xi, ZW;  Gao, S
关键词: heteropolyphosphatotungstate ;  phase-transfer catalyst ;  P-31 NMR ;  1-octene ;  epoxidation
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2006
卷: 27, 期:1, 页:50-54
收录类别: SCI
文章类型: Article
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
英文摘要: Reaction-controlled phase-transfer catalysts have advantages of both homogeneous and heterogeneous catalysts. For decreasing the catalyst preparation cost and making the synthesis method practical, a new reaction-controlled phase-transfer catalyst was synthesized Under the improved preparation conditions using [C16H33 (CH3)(3) (70 %) + C18H37 (CH3)(3) (30 %)] N+ Cl- (labeled as Q(+)Cl(-)) instead of [C5H5NC16 H-33](+) Cl- as the phase-transfer agent. The influence of preparation conditions on the catalyst activity was investigated, and the catalyst was analyzed by P-31 NMR spectroscopy. Combining the P-31 NMR results with the catalyst activity for the I-octene epoxidation, it was found that the components of the catalyst can interconvert in the presence of hydrogen peroxide, which results in the formation of a complex catalyst with high activity for the 1-octene epoxidation. But the catalyst with one component shows poor catalytic activity in the I-octene epoxidation.
关键词[WOS]: AQUEOUS HYDROGEN-PEROXIDE ;  BIPHASE MEDIUM ;  W-183 NMR ;  EPOXIDATION ;  OXIDATION ;  OLEFINS ;  SYSTEM
语种: 英语
WOS记录号: WOS:000235437700012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140098
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 116023, Liaoning, Peoples R China

Recommended Citation:
Yang, XG,Zhang, SJ,Li, M,et al. Influence of preparation conditions on catalytic activity of heteropolyphosphatotungstate catalyst[J]. CHINESE JOURNAL OF CATALYSIS,2006,27(1):50-54.
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