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题名: Acid catalyzed synthesis of ordered bifunctionalized mesoporous organosilicas with large pore
作者: Yang, QH;  Liu, J;  Yang, J;  Zhang, L;  Feng, ZC;  Zhang, J;  Li, C
通讯作者: 杨启华
关键词: periodic mesoporous ethane-silicas ;  Brij-76 ;  P123 ;  adsorbent ;  thiol
刊名: MICROPOROUS AND MESOPOROUS MATERIALS
发表日期: 2005-01-26
DOI: 10.1016/j.micromeso.2004.09.009
卷: 77, 期:2-3, 页:257-264
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 506,503
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: Thiol-functionalized mesoporous ethane-silicas with large pore were synthesized by co-condensation of 1,2-bis(trimethoxy-sily)ethane (BTME) with 3-mercaptopropyltrimethoxysilane (MPTMS) using nonionic oligomeric polymer C1H (OCH(2)-CH(2))(10)OH (Brij-76) or poly(alkylene oxide) block copolymer (P123) as surfactant in acidic medium. The results of powder X-ray diffraction (XRD), nitrogen gas adsorption, and transmission electron microscopy (TEM) show that the resultant materials have well-ordered hexagonal mesoscopic structure with uniform pore size distributions. (29)Si MAS NNR, (13)C CP-MAS NMR. FT-IR, and UV Raman spectroscopies confirm the attachment of thiol functionalities in the mesoporous ethane-sificas. The maximum content of the attached thiol group (-SH) in the mesoporous framework is 2.48mmol/g. The ordered mesoporous materials are efficient Hg(2+) adsorbents with almost every -SH site accessible to Hg(2+). In the presence of various kinds of heavy metal ions such as Hg(2+), Cd(2+), Zn(2+), Cu(2+) and Cr(3+), the materials synthesized using poly(alkylene oxide) block cooollxmier (Pluronic 123) g(2+), as surfactant show almost similar affinity to Hg(2+), Cd(2+), and Cr(3+), while the materials synthesized using ofigomeric polymer C(18)H(37)(OCH(2)CH(2))(10)OH (Brij-76) as surfactant exhibit high selectivity to Hg(2+). (C) 2004 Elsevier Inc. All rights reserved.
关键词[WOS]: CHANNEL WALLS ;  ORGANIC GROUPS ;  SILICA ;  ADSORPTION ;  PMOS ;  FRAMEWORKS ;  SUPPORTS ;  SIEVES ;  SBA-15 ;  MCM-41
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000226536700019
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/92265
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:
Yang, QH,Liu, J,Yang, J,et al. Acid catalyzed synthesis of ordered bifunctionalized mesoporous organosilicas with large pore[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2005,77(2-3):257-264.
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