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2007•Journal of Changchun University of Science and TechnologyRequires access

The modified research on mesoporous material MCM-41

Xu Jie

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Abstract

Using Cetyltrimethyl ammonium bromide(CTAB) as the template,tetraethyl orthosilicate(TEOS) as the source of silicon,the hexagonal ordered mesoporous materials MCM-41 was prepared at room temperature.The MCM-41 was chemical modified by TMB and APTES,and then the modified MCM-41 was acquired.The structure of the samples were characterized by X-ray Diffraction,Infrared spectroscopy and Nitrogen adsorption-desorption methods.The results indi-cated that the modified MCM-41 remains the hexagonal ordered mesoporous structure.The product gets a larger pore diam-eter than the pure MCM-41 when expanded by TMB,reduced the surface silanols by the silane modification,and incre-ased the surface polarity of MCM-41,then it is advantageous for the assembly of the mesoporous material MCM-41.

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What this paper is about

Using Cetyltrimethyl ammonium bromide(CTAB) as the template,tetraethyl orthosilicate(TEOS) as the source of silicon,the hexagonal ordered mesoporous materials MCM-41 was prepared at room temperature.The MCM-41 was chemical modified by TMB and APTES,and then the modified MCM-41 was acquired.The structure of the samples were characterized by X-ray Diffraction,Infrared spectroscopy and Nitrogen adsorption-desorption methods.The results indi-cated that the modified MCM-41 remains the hexagonal ordered mesoporous structure.The product gets a larger pore diam-eter than the pure MCM-41 when expanded by TMB,reduced the surface silanols by the silane modification,and incre-ased the surface polarity of MCM-41,then it is advantageous for the assembly of the mesoporous material MCM-41.

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Available abstract

Using Cetyltrimethyl ammonium bromide(CTAB) as the template,tetraethyl orthosilicate(TEOS) as the source of silicon,the hexagonal ordered mesoporous materials MCM-41 was prepared at room temperature.The MCM-41 was chemical modified by TMB and APTES,and then the modified MCM-41 was acquired.The structure of the samples were characterized by X-ray Diffraction,Infrared spectroscopy and Nitrogen adsorption-desorption methods.The results indi-cated that the modified MCM-41 remains the hexagonal ordered mesoporous structure.The product gets a larger pore diam-eter than the pure MCM-41 when expanded by TMB,reduced the surface silanols by the silane modification,and incre-ased the surface polarity of MCM-41,then it is advantageous for the assembly of the mesoporous material MCM-41.

Key concepts: Tetraethyl orthosilicate, MCM-41, Mesoporous material, Ammonium bromide, Materials science, Mesoporous organosilica, Chemical engineering, Silane

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