| SYNTHESIS AND COATING OF ORDERED MESOPOROUS SILICA |
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| 作者姓名： | WeiGuo GuangshengLuo YujunWang |
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| 作者单位： | DepartmentofChemicalEngineering,TsinghuaUniversity,Beijing100084,P.R.China |
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| 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.
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| 关 键 词： | 中间多孔渗水材料 MCM 覆层 聚砜 合成 多孔硅 催化剂 |
| 收稿时间： | 7 May 2003 |
SYNTHESIS AND COATING OF ORDERED MESOPOROUS SILICA |
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| WeiGuo GuangshengLuo YujunWang.SYNTHESIS AND COATING OF ORDERED MESOPOROUS SILICA[J].China Particuology,2003,1(4):151-155. |
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| Authors: | Wei Guo Guangsheng Luo Yujun Wang |
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| Institution: | 1. Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Punjab 160062 India;2. Generics FR&D, Dr. Reddy''s Laboratories, Bachupally, Hyderabad 500072, India;3. Novartis-MIT Centre for continuous manufacturing, Cambridge, Massachusetts 02139;4. Department of Pharmacoinformatics, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Punjab 160062 India |
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| 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. |
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| Keywords: | mesoporous materials MCM coating polysulfone |
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