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题名: Mesoporous ethane-silicas functionalized with trans-(1R,2R)-diaminocyclohexane: Relation between structure and catalytic properties in asymmetric transfer hydrogenation
作者: Jiang, Dongmei;  Gao, Jinsuo;  Yang, Jie;  Su, Weiguang;  Yang, Qihua;  Li, Can
关键词: mesoporous ethane-silicas ;  chirality ;  tratis-(1R,2R)-diamiNocyclohexane ;  asymmetric transfer hydrogenation ;  acetophenone
刊名: MICROPOROUS AND MESOPOROUS MATERIALS
发表日期: 2007-09-15
DOI: 10.1016/j.micromeso.2007.05.034
卷: 105, 期:1-2, 页:204-210
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 ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: trans-(IR,2R)-Diaminocyclohexane (DACH) functionalized mesoporous ethane-silicas with different porous structures were synthesized by addition of 1,3,5-trimethylbenzene (TMB) during co-condensation of 1, 2-bis(trimethoxysil yl) ethane and N-[(triethoxysilyl)propyl]-(-)-(1R,2R)-diaminocyclohexane in the presence of octadecyltrimethylammonium chloride under basic conditions. The addition of TMB can not only expand the pore diameter, but also induce the structural transformation from the ordered 2D-hexagonal mesostructure to the mesocellular foam-like (MCF-like) structure and the mixture of vesicle and worm-like structure. The DACH functionalized materials with different porous structures (after complexing with [Rh(cod)Cl](2)) were found to be active catalysts for the asymmetric transfer hydrogenation of acetophenone. The material with MCF-like structure exhibits the highest initial rate among all the materials tested. The catalytic activity of the solid catalysts could be greatly enhanced through adjusting the porous structure of the materials. (C) 2007 Elsevier Inc. All rights reserved.
关键词[WOS]: MOLECULAR-SIEVES ;  ENANTIOSELECTIVE REDUCTION ;  PORE-SIZE ;  ORGANOSILICAS ;  TEMPERATURE ;  TEMPLATES ;  COPOLYMER ;  TRIBLOCK ;  FOAMS
语种: 英语
WOS记录号: WOS:000250399300026
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140624
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 Catal, Dalian 116023, Peoples R China

Recommended Citation:
Jiang, Dongmei,Gao, Jinsuo,Yang, Jie,et al. Mesoporous ethane-silicas functionalized with trans-(1R,2R)-diaminocyclohexane: Relation between structure and catalytic properties in asymmetric transfer hydrogenation[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2007,105(1-2):204-210.
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