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题名: Structural relation properties of hydrothermally stable functionalized mesoporous organosilicas and catalysis
作者: Liu, J;  Yang, QH;  Kapoor, MP;  Setoyama, N;  Inagaki, S;  Yang, J;  Zhang, L
通讯作者: 杨启华
刊名: JOURNAL OF PHYSICAL CHEMISTRY B
发表日期: 2005-06-30
DOI: 10.1021/jp0509109
卷: 109, 期:25, 页:12250-12256
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 506
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: The surfactant assistant syntheses of sulfonic acid functionalized periodic mesoporous organosilicas with large pores are reported. A one-step condensation of tetramethoxysilane (TMOS) with 1,2-bis(trimethoxysilyi)ethane (BTME) and 3-mercaptopropyltrimethoxysilane (MPTMS) in highly acidic medium was performed in the presence of triblock copolymer Pluronic P123 and inorganic salt as additive. During the condensation process, thiol (-SH) group was in situ oxidized to sulfonic acid (-SO3H) by hydrogen peroxide (30 wt % H2O2). X-ray diffraction studies along with nitrogen and water sorption analyses reveal the formation of stable, highly hydrophobic, and well-ordered hexagonal mesoscopic structures in a wide range of -CH2CH2-concentrations in the mesoporous framework. The resultant materials were also investigated by Si-29 MAS and C-13 CP MAS NMR, thermogravimetric analyses, UV-Raman spectroscopy, and FT-IR spectroscopy. The role of the bridged organic group on the hydrothermal stability of the mesoporous materials was established, which revealed an enhancement in hydrothermal stability of the materials with incorporation of the bridged organic groups in the network. The catalytic performance of -SO3H functionalized mesoporous materials was investigated in the esterification of ethanol with acetic acid, and the results demonstrate that the ethane groups incorporated in the mesoporous framework have a positive influence on the catalytic behavior of the materials.
关键词[WOS]: MOLECULAR-SCALE PERIODICITY ;  LARGE-PORE ;  BRIDGING GROUPS ;  ORGANIC GROUPS ;  CHANNEL WALLS ;  SILICA ;  SILSESQUIOXANE ;  ADSORPTION ;  MCM-41 ;  HYDROPHOBICITY
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000230122900004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/92503
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
2.Toyota Cent Res & Dev Labs Inc, Nagakute, Aichi 4801192, Japan

Recommended Citation:
Liu, J,Yang, QH,Kapoor, MP,et al. Structural relation properties of hydrothermally stable functionalized mesoporous organosilicas and catalysis[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2005,109(25):12250-12256.
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