Silicon dioxide composite material containing media pores in concentric ring shaped or in hexagonal structure, and preparation method

A technology of mesoporous silica and composite materials, which is applied in the field of mesoporous silica composite materials and preparation, silica mesoporous materials and preparation, can solve the problems of limited function and limited functional units, and achieve good Load capacity, simple preparation process, and the effect of realizing large-scale industrial production

Inactive Publication Date: 2004-10-27
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the limited functional units in the pure mesoporous silica material, it has limited effect in actual use.

Method used

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  • Silicon dioxide composite material containing media pores in concentric ring shaped or in hexagonal structure, and preparation method
  • Silicon dioxide composite material containing media pores in concentric ring shaped or in hexagonal structure, and preparation method
  • Silicon dioxide composite material containing media pores in concentric ring shaped or in hexagonal structure, and preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Silicon source is tetraethyl orthosilicate, Si(OC 2 h 5 ) 4 ; The surfactant is cetyltrimethylammonium bromide C 16 TMABr, adjust the pH of the solution with NaOH. The organic additive is 8-hydroxyquinoline, according to the formula ratio (molar ratio): 1 C 16 TMABr: 700H 2 O to prepare the solution, adjust the pH value of the solution to 10 with NaOH, press 1 C 16 TMABr: 1.5C 9 h 7 NO join C 9 h 7 NO, and make it completely dissolved to prepare the precursor solution; then press 1 C 16 TMABr:10Si(OC 2 h 5 ) 4 Add Si(OC 2 h 5 ) 4 , after stirring and aging, transfer the suspension to a hydrothermal kettle, keep the temperature at 110°C for 48 hours, filter, rinse with deionized water, and dry at 20°C in the atmosphere for 24 hours.

[0030] Its small-angle X-ray diffraction results are as follows image 3 Shown in curve 1; its high-resolution transmission electron microscope photo is shown in figure 2 As shown, the morphology of its product is a conce...

Embodiment 2

[0032] Embodiment 2: formula ratio 1 C 16 TMABr: 0.5C 10 h 8 : 10 Si(OC 2 h 5 ) 4 : 700H 2 O, its small-angle X-ray diffraction pattern is as follows image 3 Shown in curve 2.

Embodiment 3

[0033] Embodiment 3: formula ratio 1 C 16 TMABr: 1.0 C 10 h 8 O: 10 Si(OC 2 h 5 ) 4 : 700H 2 O, its small-angle X-ray diffraction pattern is as follows image 3 Shown in curve 3.

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Abstract

A mesoporous SiO2 composition has hexagonal structure or concentric rings structure, the distance between mesopores is 2-8 mm or 2-5 mm, and the organic additive in the arteries of mesoporous structure. Its preparing process includes dissolving surfactant in deionized water, using NaOH to regulate pH=8-12, dissolving organic additive in it, adding Si source, stirring, ageing, hydrothermally treating at 100-150 deg.C for 48-72 hrs, washing with deionized water and drying.

Description

technical field [0001] The invention relates to a novel silicon dioxide mesoporous material and a preparation method. More precisely, it relates to a mesoporous silica composite material with a concentric ring structure or a hexagonal structure and a preparation method thereof. It belongs to the field of inorganic / organic composite materials. Background technique [0002] Mesoporous materials refer to porous materials with pore diameters in the range of 2nm-50nm, and they have become an attractive research object in the field of nanomaterial science in recent years. Due to its adjustable and regular mesoporous channels, high specific surface area, and good thermal stability, it has shown broad application prospects in the fields of heavy oil hydrogenation, olefin polymerization, macromolecular selective catalysis, and separation in petrochemical industry. (Beck, J.S.U.S. Patent 5,057,296, 1991) [0003] At present, the research field of mesoporous materials mainly focuses...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/12C01B37/02
Inventor 陈红光施剑林严东生
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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