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题名: Mesoporous organosilicas containing disulfide moiety: Synthesis and generation of sulfonic acid functionality through chemical transformation in the pore wall
作者: Li, Congming1;  Liu, Jian1;  Zhang, Lei1;  Yang, Jie1;  Yang, Qihua1
通讯作者: 杨启华
关键词: hybrid materials ;  buffer solution ;  post-oxidation method ;  esterification
刊名: MICROPOROUS AND MESOPOROUS MATERIALS
发表日期: 2008-08-01
DOI: 10.1016/j.micromeso.2007.11.031
卷: 113, 期:1-3, 页:333-342
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 ;  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: Mesoporous organosilicas with disulfide moiety bridged in the pore wall have been synthesized by co-condensation of bis[3-(triethoxysilyl)propyl]disulfide (BTPDS) and tetramethoxysilane (TMOS) in acetic acid/sodium acetate buffer solution (HAc-NaAc, pH 4.4), using nonionic surfactant P123 as the template. With the molar percent of BTPDS increasing, the mesostructure of the resultant material transforms from highly ordered 2-D hexagonal structure to cellular foam structure. The disulfide moiety could be transferred to sulfonic acid functionality by a simple post-oxidation method. The structural characterizations show that the mesostructure changes during the oxidation step especially for the materials with high content of disulfide moiety. In the esterification of aliphatic acid and ethanol, the oxidized materials show higher yield than the conventional heterogeneous solid acids such as zeolites and sulfonic acid resin. Comparisons of the structural properties and the catalytic results of the materials show that a large pore diameter and low surface hydrophilicity are required to obtain high catalytic activity. (C) 2007 Published by Elsevier Inc.
关键词[WOS]: MESOSTRUCTURED SILICA VESICLES ;  INORGANIC HYBRID MATERIALS ;  BENZENE-SILICA ;  ORGANIC GROUPS ;  THIOETHER ;  ESTERIFICATION ;  CATALYST ;  WATER ;  FRAMEWORKS ;  COMPOSITE
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000257362100039
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/100163
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

Recommended Citation:
Li, Congming,Liu, Jian,Zhang, Lei,et al. Mesoporous organosilicas containing disulfide moiety: Synthesis and generation of sulfonic acid functionality through chemical transformation in the pore wall[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2008,113(1-3):333-342.
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