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Synthesis of SBA-15 type mesoporous organosilicas with diethylenebenzene in the framework and post-synthetic framework modification
Li, Congming; Yang, He; Shi, Xin; Liu, Ran; Yang, Qihua; Yang QH(杨启华); Yang QH(杨启华)
关键词Mesoporous Organosilica 1 Chemical Modification 4-bis(Trimethoxysitylethyl)Benzene Sulfonation Esterification
刊名MICROPOROUS AND MESOPOROUS MATERIALS
2007-01-05
DOI10.1016/j.micromeso.2006.09.013
98期:1-3页:220-226
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
关键词[WOS]MOLECULAR-SCALE PERIODICITY ; COPOLYMER-ASSISTED SYNTHESIS ; CO-CONDENSATION ; BENZENE-SILICA ; ORGANIC GROUPS ; WALLS ; MORPHOLOGY ; PORES ; CHIMO
英文摘要The SBA-15 type periodic mesoporous organosilicas (PMOs) containing different fraction of 1,4-diethylenebenzene groups in the framework were synthesized by co-condensation of 1,4-bis(trimethoxysilylethyl)benzene with tetramethoxysilane under acidic conditions using triblock copolymer Pluronic P123 as structural directing agent. The results of X-ray diffraction pattern (XRD), nitrogen sorption isotherm, and transmission electron microscopy (TEM) show that all materials have well-ordered mesoporous structure with uniform pore size distributions. The acidic sites were incorporated in the mesoporous framework by post-synthetic framework modification of 1,4-diethylenebenzene by sulfonation. The framework composition of the mesoporous organosilicas before and after modification was fully characterized by UV Raman spectroscopy, and C-13 CP-MAS and Si-29 MAS NMR. From elemental analysis, it can be estimated that about 40% of the organic group within the mesoporous framework is available for further chemical reaction. The PMOs with aryl sulfonaic acid groups in the framework are efficient solid acids for the esterification of ethanol with aliphatic acid. With the alkyl chain of the aliphatic acid increasing, the activity of the material is enhanced by more amounts of 1,4-diethylenebenzene incorporated in the mesoporous framework. The post-synthetic modification is a facile approach for the generation of new functional groups in the mesoporous framewrok of PMOs. (C) 2006 Elsevier Inc. All rights reserved.
语种英语
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WOS记录号WOS:000243695000029
引用统计
被引频次:39[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/98463
专题中国科学院大连化学物理研究所
通讯作者Yang QH(杨启华); Yang QH(杨启华)
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
推荐引用方式
GB/T 7714
Li, Congming,Yang, He,Shi, Xin,et al. Synthesis of SBA-15 type mesoporous organosilicas with diethylenebenzene in the framework and post-synthetic framework modification[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2007,98(1-3):220-226.
APA Li, Congming.,Yang, He.,Shi, Xin.,Liu, Ran.,Yang, Qihua.,...&杨启华.(2007).Synthesis of SBA-15 type mesoporous organosilicas with diethylenebenzene in the framework and post-synthetic framework modification.MICROPOROUS AND MESOPOROUS MATERIALS,98(1-3),220-226.
MLA Li, Congming,et al."Synthesis of SBA-15 type mesoporous organosilicas with diethylenebenzene in the framework and post-synthetic framework modification".MICROPOROUS AND MESOPOROUS MATERIALS 98.1-3(2007):220-226.
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