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题名: Direct synthesis of W-SBA-15 mesoporous molecular sieves and their catalytic performance for epoxidation of cyclohexene
作者: Chen, YY;  Han, XW;  Bao, XH
关键词: W-SBA-15 mesoporous molecular sieve ;  sodium tungstate ;  tungstic acid ;  cyclohexene ;  epoxidation
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2005-05-01
卷: 26, 期:5, 页:412-416
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: Tungsten-containing mesoporous molecular sieves W-SBA-15 were synthesized under conventional hydrothermal conditions in strong acidic solution using Na2WO4 or H2WO4 as tungsten source and tetraethyl orthosilicate as silicon source. The molecular sieves were characterized by means of small angle XRD, N-2 adsorption, FT-IR, UV-Vis, SEM and XRF. When only P123 (EO20PO70EO20) was used as structure directing agent, the tungsten content in W-SBA-15 was half that in gel solution. While the mixture of P123 and cetyltrimethylammonium bromide was used as template, the tungsten in gel solution can be effectively incorporated into W-SBA-15. H2WO4 was more effective as tungsten source than Na2WO4. When the Si/W ratio was 40 in gel solution, the tungsten species in W-SBA-15 were highly dispersed. The W-SBA-15 materials had a high catalytic activity for epoxidation of cyclohexene.
关键词[WOS]: SELECTIVE OXIDATION ;  GLUTARALDEHYDE ;  CYCLOPENTENE ;  H2O2
语种: 英语
WOS记录号: WOS:000229619800015
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139825
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, Liaoning, Peoples R China

Recommended Citation:
Chen, YY,Han, XW,Bao, XH. Direct synthesis of W-SBA-15 mesoporous molecular sieves and their catalytic performance for epoxidation of cyclohexene[J]. CHINESE JOURNAL OF CATALYSIS,2005,26(5):412-416.
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