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Preparation process of a monolithic polymer porous fixed bed with catalytic function

A preparation process and polymer technology, which can be used in the preparation of organic compounds, the preparation of sugar derivatives, organic compounds/hydrides/coordination complex catalysts, etc., and can solve the problems of low process economy, high pollution, and long time. , to achieve the effect of improving the process control accuracy, strengthening the interphase transfer process, and improving the mechanical strength

Active Publication Date: 2022-05-10
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of high energy consumption, high material consumption and high pollution of traditional acid catalysts, low single conversion rate of polymer membranes loaded with ionic liquids, long reaction time for multiple cycle operations, difficulty in large-scale preparation, low process economy, etc. problem, and provide a preparation process for a monolithic polymer porous fixed bed with catalytic function

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation process of a kind of monolithic polysulfone porous fixed bed hydrolysis catalyst of the present invention, concrete preparation steps are as follows:

[0032] 1) Dissolve 20g polysulfone into 1000mL 1,2-dichloroethane, stir and dissolve at 45°C; after the dissolution is complete, add 4g zinc chloride, continue stirring for 0.8h, divide the above mixed solution into two parts, Obtain mixed solution 1 and mixed solution 2;

[0033] 2) At 60°C, add 20ml of chloromethyl methyl ether dropwise to the mixed solution 1 and mixed solution 2 obtained in step 1), respectively, and carry out the chloromethylation reaction for 0.6h and 1h respectively to obtain the chloromethylation solution 1 and chloromethylation solution 2; respectively pour chloromethylation solution 1 and chloromethylation solution 2 into excess absolute ethanol, and perform phase inversion for 12 hours; then filter out the precipitates respectively and wash them with absolute ethanol 3 times, ...

Embodiment 2

[0039] A kind of preparation technology of monolithic polypropylene porous fixed bed hydrolysis catalyst of the present invention, concrete preparation steps are as follows:

[0040] 1) Dissolve 10g of polypropylene into 500mL of 1,2-dichloroethane, stir and dissolve at 40°C; after the dissolution is complete, add zinc chloride, the mass ratio of zinc chloride to polypropylene is 1:5, and keep stirring for 1.4 After h, the above-mentioned mixed solution is divided into two parts to obtain a mixed solution 1, and the above steps are repeated to obtain a mixed solution 2;

[0041] 2) At 60°C, add 20ml of chloromethyl methyl ether dropwise to the mixed solution 1 and mixed solution 2 obtained in step 1), respectively, and carry out the chloromethylation reaction for 0.5h and 1.0h respectively to obtain the chloromethylated Solution 1 and chloromethylation solution 2; Pour chloromethylation solution 1 and chloromethylation solution 2 into excess absolute ethanol respectively, and ...

Embodiment 3

[0047] A kind of preparation technology of monolithic polypropylene porous fixed-bed esterification catalyst of the present invention, concrete preparation steps are as follows:

[0048] 1) Dissolve 10g of polypropylene into 500mL of 1,2-dichloroethane, stir and dissolve at 40°C; after the dissolution is complete, add zinc chloride, the mass ratio of zinc chloride to polypropylene is 1:5, and keep stirring for 1.4 After h, the above-mentioned mixed solution is divided into two parts to obtain a mixed solution 1, and the above steps are repeated to obtain a mixed solution 2;

[0049] 2) At 60°C, add 24ml of chloromethyl methyl ether dropwise to the mixed solution 1 and mixed solution 2 obtained in step 1), respectively, and carry out the chloromethylation reaction for 0.6h and 1.4h respectively to obtain the chloromethylated Solution 1 and chloromethylation solution 2; Pour chloromethylation solution 1 and chloromethylation solution 2 into excess absolute ethanol respectively, ...

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Abstract

The invention discloses a preparation process of a monolithic polymer porous fixed bed with catalytic function. First, the polymer carrier material is dissolved and mixed with chloride, and divided into two mixed solutions; and then dripped into the two mixed solutions respectively Chloromethylation reagents are added to obtain two chloromethylation polymer materials with different degrees of chloromethylation through different reaction times; DMF, imidazole-based polymers, sulfonates, and acid solutions are added respectively, and placed in the solidification The phase inversion is carried out in the bath; after the precipitate is washed and dried, two parts of ionic liquid polymer carrier materials with different grafting degrees are obtained; then two parts of ionic liquid polymer carrier materials are mixed with PVP, PEG‑600 and DMF and poured into The mold is placed in a coagulation bath for stirring reaction; an integral porous fixed bed of polymer is formed in the mold. The preparation process of the invention can effectively improve the mechanical strength of the monolithic catalyst, and can also regulate the preparation scale, external dimension, porosity and pore size of the catalyst.

Description

technical field [0001] The invention relates to a preparation process of an integral polymer porous fixed bed with catalytic function, belonging to the field of catalyst preparation and catalytic conversion. Background technique [0002] The chemical industry is an important part of my country's national economy, providing a large number of basic chemicals, raw materials, processes and equipment for my country's modernization and the development of national defense weapons and explosives. It is reported that 80% of the products in the modern chemical industry are produced by means of catalytic processes, and there would be no modern chemical industry without catalysts. Hydrolysis, esterification and alkylation reactions in the fields of traditional petrochemical, pharmaceutical synthesis, biomass conversion, etc. The pretreatment is complex, the reaction time is long, the operation and production costs are high, and the activity of the enzyme will be inhibited with the form...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/10C07H3/02C07H1/00C07C67/08C07C69/14C08G75/20C08F8/36C08F8/32C08F8/24C08F110/06C08F255/02C08F226/06C08F257/02B01J8/02
CPCB01J8/02C08G75/20C08F8/36C08F8/32C08F8/24B01J31/10C07H3/02C07H1/00C07C67/08B01J2231/49C08F110/06C08F255/023C08F226/06C07C69/14C08F257/02
Inventor 赵之平桑乐姜晗毛恒李硕
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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