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Monox hollow sphere material with multi-stage pore structure and preparation method of monox hollow sphere material

A technology of mesoporous structure and silicon oxide, applied in the direction of silicon oxide, silicon dioxide, crystalline aluminosilicate zeolite, etc., to achieve the effects of reduced synthesis cost, high specific surface area, and simple process

Active Publication Date: 2011-05-11
中国科学院上海硅酸盐研究所苏州研究院
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  • Description
  • Claims
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  • Monox hollow sphere material with multi-stage pore structure and preparation method of monox hollow sphere material
  • Monox hollow sphere material with multi-stage pore structure and preparation method of monox hollow sphere material
  • Monox hollow sphere material with multi-stage pore structure and preparation method of monox hollow sphere material

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Embodiment 1

[0026] Synthesis of hollow silicon oxide spheres with multi-level mesoporous structure: First, ultrasonically disperse PMMA powder in water, then add tetraethyl orthosilicate and monoamine dropwise to CTAB, ethylene glycol, and ammonia solution, and stir for 1 hour , was added to the PMMA emulsion and stirred for 2 hours. The molar ratio of reactants is 22TEOS / 3.5APTES / 900EG / 12800H 2 O / 385NH 3 / 9CTAB / 0.04PMMA. The above solution was centrifugally washed and dried, and calcined at 550° C. for 6 hours to obtain mesoporous silica hollow spheres with a hierarchical pore structure. Typical XRD spectra, SEM, TEM, and nitrogen adsorption curves prove that the product is an ordered mesoporous channel, a hierarchical porous structure with a high specific surface area, and a uniform size silica hollow sphere. The mesopore diameter is 2.34 and 18.8nm, and the specific surface area 812m 2 / g, the total pore volume is 0.76cm 3 / g, the diameter of the hollow sphere is 50-100nm.

Embodiment 2

[0028] According to the experimental method of Example 1, the content of each component is changed to 6TEOS / 1.2APTES / 900EG / 12800H 2 O / 385NH 3 / 3CTAB / 0.04PMMA, the material structure changes as figure 2 B, 3B, is the hollow ring of mesoporous silica.

Embodiment 3

[0030] According to the experimental method of Example 1, the content of each component is changed to 6TEOS / 900EG / 12800H 2 O / 385NH 3 / 3CTAB / 0.04PMMA, the material structure changes as image 3 C, is a hollow ring of silicon oxide without mesoporous channels.

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Abstract

The invention relates to a monox hollow sphere material with a multi-stage pore structure and a preparation method of the monox hollow sphere material, belonging to the field of inorganic materials. In the monox hollow sphere material with the multi-stage pore structure, the pore channel size of a monox shell is 2-50 nm and controllable, the diameter of the sphere is 30nm-10 microns, the specific surface area is 100-2000m<2> / g, and the total pore capacity is 0.05-2.0 cm<3> / g. The monox hollow sphere material is prepared by using an organic sphere as a template of a hollow core, using alkaline solution to regulate the PH value, using surfactant as a pore-forming agent for a pore-sphere shell, stirring, centrifuging, washing, drying and roasting. The monox hollow sphere material can be used as a carrier material for an absorbent, a catalyst and a drug release system.

Description

technical field [0001] The invention relates to a silicon oxide hollow sphere material with a multi-level mesoporous structure and a preparation method thereof, belonging to the field of inorganic materials. technical background [0002] Since American researchers reported the M41S series of mesoporous materials on Nature for the first time in 1992, scientists from various countries have conducted extensive research on its synthesis and its application in catalysis, adsorption, and pharmaceutical applications. Generally, the structure and morphology of materials have an important impact on their applications. The hollow sphere structure with mesoporous channels in the shell can not only increase the loading capacity of guest molecules and serve as a microreactor, but also facilitate the internal and external transport of guest molecules. Therefore, such mesoporous hollow spheres have broader application prospects as adsorbents, catalysts, and carrier materials for drug deli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/12C01B39/04
Inventor 赵晋津陈航榕施剑林
Owner 中国科学院上海硅酸盐研究所苏州研究院
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