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Ordered meso-porous silicon oxide material

A silicon oxide and double mesoporous technology, applied in the direction of silicon oxide, etc., can solve the problems of no creation, no ordered double mesoporous, etc., and achieve the effect of high adsorption performance

Inactive Publication Date: 2008-05-14
YUNNAN NORMAL UNIV
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Problems solved by technology

So far, there have been no reports on the preparation of ordered dual mesoporous pores of different scales appearing in a porous network, nor have there been reports on the creation of a second ordered large mesoporous mesopore by 63±3nm polymer colloidal latex spheres. There is no report of the first ordered mesopores created by amphiphilic long-chain ionic liquids in acidic media

Method used

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  • Ordered meso-porous silicon oxide material
  • Ordered meso-porous silicon oxide material
  • Ordered meso-porous silicon oxide material

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Embodiment Construction

[0030]The ordered double mesoporous silica material of the present invention utilizes ethyl orthosilicate and 1-hexadecyl-3-methylimidazole chloride in an acidic aqueous solution of monodisperse polymethyl methacrylate microcolloidal emulsion balls The self-assembly in the material is obtained by rapid decompression suction filtration and roasting to remove the organic template. The material has large mesoporous pores with a pore size of 38±2nm, and the pore wall is composed of hexagonal phase small mesoporous silica of 2.7±2nm. The characteristic of double mesoporous structure arranged in three-dimensional direction; the material is obtained by the following steps:

[0031] a. Add 0.15g SDS to 175mL distilled water, add 15mL methyl methacrylate monomer under magnetic stirring, feed nitrogen into the solution for more than 20 minutes, to remove the polymerization inhibitor, 0.1164g potassium persulfate initiator Dissolve in 20mL of distilled water, then add to the solution, an...

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Abstract

The invention relates to an ordered double mesoporous silicon oxide material, which belongs to the technical field of material preparation. The present invention utilizes tetraethyl orthosilicate and 1-hexadecyl-3-methylimidazole chloride in an acidic aqueous solution of monodisperse polymethyl methacrylate microcolloid emulsion balls (ball diameter 63±3nm) Self-assembly, through rapid decompression suction filtration, roasting to remove the organic template, to obtain a double mesopore with a pore diameter of 38±2nm and a hexagonal phase small mesopore with a pore wall of 2.7±2nm, which are arranged in an orderly three-dimensional direction Porous silica material. The ordered double mesoporous structure was confirmed by XRD, SEM, TEM and N2 adsorption experiments, and it is a new type of ordered double mesoporous silica material. The material has high adsorption performance and special pore size distribution range, and can be used to prepare catalysts and adsorbents. The invention provides a matrix structure for the research and development of new catalysts, and is beneficial to the further development of multifunctional new catalysts.

Description

Technical field: [0001] The present invention relates to the use of a polymethyl methacrylate (PMMA) microcolloid latex ball with a ball diameter of 63±3nm and an amphipathic long-chain ionic liquid (chlorinated-1-hexadecyl-3-methylimidazole, referred to as for C 16 The dual-template method of mimCl) prepares an ordered dual mesoporous silicon oxide material with high adsorption performance, and belongs to the technical field of material preparation. Background technique: [0002] Ordered mesoporous (pore size<50nm) materials have shown broad application prospects in catalysis, adsorption, separation and chemical sensors due to their unique physical and chemical properties. For the adsorption and catalytic processes of some macromolecules, materials containing hierarchically ordered pores can further enhance their reactivity and optimize their selectivity. Usually, different template technologies can be used at the same time to prepare hierarchical porous materials with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/113
Inventor 王彤文陈亚萍刘玲
Owner YUNNAN NORMAL UNIV
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