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题名: Synthesis, characterization, and catalytic activity of sulfonic acid-functionalized periodic mesoporous organosilicas
作者: Yang, QH;  Liu, J;  Yang, J;  Kapoor, MP;  Inagaki, S;  Li, C
关键词: sulfonic acid ;  mesoporous bifunctional organosilica ;  ethane bridged ;  phenylene bridged ;  bisphenol A
刊名: JOURNAL OF CATALYSIS
发表日期: 2004-12-10
DOI: 10.1016/j.jcat.2004.09.007
卷: 228, 期:2, 页:265-272
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
英文摘要: Sulfonic acid-functionalized periodic mesoporous organosilicas were synthesized directly by cocondensation of (R'O)(3)Si-R-Si(OR')(3) (R = CH2CH2 and C6H4; R' = CH3 and C2H5) with 3-mercaptopropyltrimethoxysilane (MeO)(3)SiCH2CH2CH2SH in the presence of H2O2 using nonionic oligomeric polymer surfactant C18H37(OCH2CH2)(10)OH in acidic medium. The sulfonic acid functionalities (-SO3H) were generated in situ by oxidation of the propylthiol using H2O2 as oxidant during the synthesis process. Powder X-ray diffraction patterns and nitrogen sorption indicate the formation of well-ordered mesoporous material with uniform porosity. The highest acid-exchange capacity (acid-base titration methods) was 1.72 H+ mmol/g. Complete oxidation of -SH to -SO3H was observed as evidenced by X-ray photoelectron spectroscopy. For comparison, the sulfonic acid-functionalized mesoporous organosilicas were also prepared by a grafting method. The catalytic properties of the materials were investigated in liquid-phase condensation of phenol with acetone to form Bisphenol A. All sulfonic acid-functionalized mesoporous organosilicas show high catalytic activity. The highest TOF obtained for the mesoporous organosilica is 17.2. (C) 2004 Elsevier Inc. All rights reserved.
关键词[WOS]: MCM-41-TYPE SILICA ;  ORGANIC GROUPS ;  COMBINED ALKYL ;  CHANNEL WALLS ;  FRAMEWORKS
语种: 英语
WOS记录号: WOS:000225661200001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139547
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:
Yang, QH,Liu, J,Yang, J,et al. Synthesis, characterization, and catalytic activity of sulfonic acid-functionalized periodic mesoporous organosilicas[J]. JOURNAL OF CATALYSIS,2004,228(2):265-272.
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