Preparation method of mesonic pore molecular sieve carrier material

A mesoporous molecular sieve and carrier material technology, which is applied in the field of preparation of mesoporous molecular sieve carrier materials, can solve the problem of high acidity of the synthesis medium

Inactive Publication Date: 2002-03-27
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason may be that the hydrophilic / lipophilic difference between the two-block polymer surfactant blocks is too small, and the synthesis medium is too acidic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1, the preparation of a hexagonal silica mesoporous material, the specific steps are as follows: 0.4 grams of EO 16 BO 10 (BL50-1500) was dissolved in 30 grams of 2M hydrochloric acid, stirred at room temperature, and after it was dissolved, 3 grams of ethyl orthosilicate was added. After stirring at room temperature for 24 hours, it was placed in an oven at 100° C. and aged for 24 hours. After taking it out, it was cooled, filtered, and washed to obtain a white solid, which was dried at room temperature; finally, it was burned in a muffle furnace at 550°C for 6 hours to obtain the final product. After characterization, it is known that the material is a mesoporous silica material with channels arranged in a two-dimensional hexagonal structure, and the unit cell parameter is 9.26 nanometers (d 100 The value is 8.02 nanometers), with a pore size of 6.0nm single distribution, 902m 2 / g high specific surface area and 1.03cm 3 / g of pore volume. The calcined pr...

Embodiment 2

[0016] Embodiment 2, the preparation of a kind of layered silica material: 7 grams of EO 16 BO 10 (BL50-1500) was added to 30 grams of 2M sulfuric acid, stirred at room temperature, and after it was dissolved, 3 grams of ethyl orthosilicate was added. After stirring at room temperature for 24 hours, a homogeneous solution formed. Transfer the solution to a watch glass and air dry for several days. The X-ray diffraction (XRD) pattern of the product at this time shows three sharp diffraction peaks, the corresponding d values ​​are 8.82, 4.41 and 3.01 nm, which is a typical layered structure. After the collected solid was burned in a muffle furnace at 600°C for 5 hours, the layered structure collapsed due to the removal of polymers, which in turn led to the disappearance of all diffraction peaks.

Embodiment 3

[0017] Example 3, the preparation of a hexagonal silica mesoporous material, the specific steps are as follows: 0.4 grams of EO 16 BO 10 (BL50-1500) was dissolved in 30 grams of 2M hydrochloric acid, stirred at room temperature, and 2.5 grams of methyl orthosilicate was added after it was dissolved. After stirring at room temperature for 15 hours, it was placed in an oven at 100° C. and aged for 24 hours. After taking it out, it was cooled, filtered, and washed to obtain a white solid, which was dried at room temperature; finally, it was burned in a muffle furnace at 450° C. for 6 hours to obtain the final product. After characterization, it is known that the material is a mesoporous silica material with channels arranged in a two-dimensional hexagonal structure, and the unit cell parameter is 9.32 nanometers (d 100 The value is 8.07 nanometers), with a pore size of 6.0nm single distribution, 884m 2 / g high specific surface area and 1.01cm 3 / g of pore volume. The calcine...

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Abstract

The present invention belongs to the field of inorganic nanometer material technology, in particular, it relates to a method for preparing mesoporous molecular sieve carrier material by using diblockmacromolecular polymer. It is characterized by that under the acid condition it uses polyoxyethylene-polyoxybutylene diblock macromolecular surfactant as template agent and makes hydrothermal synthesis at 100 deg.C to prepare mesoporous silicon oxide material with two-dimensional hexagonal structure with high degree of order and large specific surface area and laminate silicon oxide material withhigh degree of order. These new material can be used as catalyst, catalyst carrier, adsorption film, organic-inorganic composite material, sensor and chromatographic packing, etc.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a preparation method of a mesoporous molecular sieve carrier material. technical background [0002] Mesoporous materials synthesized by surfactants as templates have broad application prospects in the fields of macromolecule conversion, catalysis, as catalyst supports, separation and purification of biomacromolecules, miniaturization of electronic devices, and chromatographic fillers. [0003] A series of new mesoporous materials have been synthesized by using various polyethylene oxide-polypropylene oxide-polyethylene oxide (PEO-PPO-PEO) triblock polymers as templates. This includes: Hexagon (H 1 ), layered (L α ) and cubic phase (I1) symmetry. However, the synthesis of silica nano-catalyst supports using diblock polymers as templates has not been reported in the literature. Previous attempts to synthesize porous silica materials with PEO-PPO diblock p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/04
Inventor 赵东元余承忠余永豪
Owner FUDAN UNIV
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