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Epoxidation of styrene on a novel titanium-silica catalyst prepared by ion beam implantation
Yang, QH; Li, C; Yuan, SD; Li, J; Ying, PL; Xin, Q; Shi, WD
刊名JOURNAL OF CATALYSIS
1999-04-01
183期:1页:128-130
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]HYDROGEN-PEROXIDE ; OXIDATION ; ALKENES ; ALKANES ; H2O2
英文摘要A Ti-SiO2 catalyst with highly isolated titanium ions was prepared by ion beam implantation. The catalyst was tested for the epoxidation of styrene using dilute H2O2 (30%) as the oxidizing agent. Two kinds of product were formed: epoxide and benzaldehyde. The selectivity for epoxide approaches 100% at 298 K and decreases at elevated reaction temperatures, A turnover frequency for styrene up to 11.7 h(-1) was observed. The activity and selectivity for epoxide decreased when the catalyst was calcined at higher temperatures, It is proposed that there are at least two types of active sites on the catalyst: Ti(alpha) (isolated Ti3+ and Ti4+) for the selective formation of epoxide and Ti(beta) (TiO2 clusters) for the formation of benzaldehyde. (C) 1999 Academic Press.
语种英语
WOS记录号WOS:000079620200016
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被引频次:41[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/321008/138532
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Dalian Univ Technol, State Key Lab Mat Modificat Laser Ion & Electron, Dalian 116023, Peoples R China
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GB/T 7714
Yang, QH,Li, C,Yuan, SD,et al. Epoxidation of styrene on a novel titanium-silica catalyst prepared by ion beam implantation[J]. JOURNAL OF CATALYSIS,1999,183(1):128-130.
APA Yang, QH.,Li, C.,Yuan, SD.,Li, J.,Ying, PL.,...&Shi, WD.(1999).Epoxidation of styrene on a novel titanium-silica catalyst prepared by ion beam implantation.JOURNAL OF CATALYSIS,183(1),128-130.
MLA Yang, QH,et al."Epoxidation of styrene on a novel titanium-silica catalyst prepared by ion beam implantation".JOURNAL OF CATALYSIS 183.1(1999):128-130.
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