Synthesis and coating of ordered mesoporous silica--颗粒学报PARTICUOLOGY

Guo, W., Luo, G., & Wang, Y. (2003). Synthesis and coating of ordered mesoporous silica. China Particuology, 1(4), 151-155. https://doi.org/10.1016/S1672-2515(07)60132-8

Synthesis and coating of ordered mesoporous silica

Wei Guo, Guangsheng Luo ^*, Yujun Wang

Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China

10.1016/S1672-2515(07)60132-8

Volume 1, Issue 4, September 2003, Pages 151-155

Received 7 May 2003, Accepted 19 June 2003, Available online 27 November 2007.

E-mail: gsluo@tsinghua.edu.cn

Highlights

Abstract

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 loading.

Graphical abstract

Keywords

mesoporous materials; MCM; coating; polysulfone

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