| Summary: | 碩士 === 國立中央大學 === 化學研究所 === 98 === The thesis is divided into three parts. In part one, well-ordered mesoporous silicas SBA-1 functionalized with thioether groups have been synthesized via co-condensation of Tetraethyl orthosilicate (TEOS) and 1,4-bis (triethoxysilyl) propane tetrasufide (BTESPTS) under acidic conditions. The thioether-containing units are incorporated quantitatively and reach a maximum BTESPTS loading up to 33 mol% without a significant degradation of the structural ordering of the Pm3n mesophase.
In part two, well-ordered cubic mesoporous silicas SBA-1 functionalized with benzene and thioether functional groups have been successfully synthesized via the co-condensation of 1,4-bis (trithoxysilyl)-benzene (BTEB) , and BTESPTS templated by CTEABr under acidic conditions. The thioether-containing units are incorporated quantitatively and reach a maximum BTESPTS loading up to 33 mol% without a significant degradation of the structural ordering of the Pm3n mesophase.
In part three, well-ordered cubic mesoporous silicas SBA-1 functionalized with carboxylic acid functional groups have been successfully synthesized via the co-condensation of TEOS , and CES templated by CTEABr under acidic conditions. The carboxylic acid functional groups-containing units are incorporated quantitatively and reach a maximum CES loading up to 33 mol% without a significant degradation of the structural ordering of the Pm3n mesophase.
The materials obtained were characterized by a variety of techniques including powder X-ray diffraction (XRD), nitrogen sorption measurements , 13C and 29Si magic angle spinning (MAS), IR, scanning electron microscope (SEM) and thermogravimetric analysis (TGA).
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