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SYNTHESIS AND COATING OF ORDERED MESOPOROUS SILICA
作者姓名:WeiGuo  GuangshengLuo  YujunWang
作者单位:DepartmentofChemicalEngineering,TsinghuaUniversity,Beijing100084,P.R.China
摘    要:1,3,5-trimethyl benzene (TMB) was used as organic swelling agent in O/W emulsions to template ultra-large mesoporous materials using the hydrothermal method. The silicas with well-defined mesopores and hydrothermally robust framework were characterized by X-ray diffraction, transmission electron microscopy and BET surface area analysis. The influence of the quantity of TMB during preparation was studied. It has been found that the TMB/CTAB ratio must be controlled for producing high pore volume materials. Polysulfone (PSU), as the usual extraction agent, was coated on the silicas with the solvent evaporation method to produce a solid separation medium. The adsorptivity and the surface area of the coated MCM were determined: 10% PSU coated MCM adsorbed twice as much phenol as the uncoated material, reaching 0.5 mg/g silica. It was found that the surface area of the coated material decreased rapidly with an increase of the PSU Ioadina.

关 键 词:中间多孔渗水材料  MCM  覆层  聚砜  合成  多孔硅  催化剂

SYNTHESIS AND COATING OF ORDERED MESOPOROUS SILICA
WeiGuo GuangshengLuo YujunWang.SYNTHESIS AND COATING OF ORDERED MESOPOROUS SILICA[J].China Particuology,2003,1(4):151-155.
Authors:Wei Guo  Guangsheng Luo  Yujun Wang
Abstract:trimethyl benzene (TMB) was used as organic swelling agent in O/W emulsions to template ul-tra-large mesoporous materials using the hydrothermal method. The silicas with well-defined mesopores and hydro-thermally robust framework were characterized by X-ray diffraction, transmission electron microscopy and BET surface area analysis. The influence of the quantity of TMB during preparation was studied. It has been found that the TMB/CTAB ratio must be controlled for producing high pore volume materials. Polysulfone (PSU), as the usual extraction agent, was coated on the silicas with the solvent evaporation method to produce a solid separation medium. The adsorptivity and the surface area of the coated MCM were determined: 10% PSU coated MCM adsorbed twice as much phenol as the un-coated material, reaching 0.5 mg/g silica. It was found that the surface area of the coated material decreased rapidly with an increase of the PSU loading.
Keywords:mesoporous materials  MCM  coating  polysulfone
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