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A kind of preparation method of microreactor containing solid-carrying catalyst

A solid-supported catalyst, microreactor technology, applied in chemical instruments and methods, chemical/physical/physical chemical reactors, chemical/physical processes, etc., can solve the problem of catalyst leakage and mass transfer resistance, low specific surface area of ​​carrier materials, catalyst problems such as low loading, to achieve the effect of enhancing the mass transfer between the raw material and the catalyst, not easy to coalesce, and the precise and regular pore structure

Active Publication Date: 2021-01-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional wall-mounted microreactors usually use support materials with low specific surface area and single surface morphology, which lead to problems such as low actual catalyst loading, catalyst agglomeration in the catalytic process, catalyst leakage and high mass transfer resistance.

Method used

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  • A kind of preparation method of microreactor containing solid-carrying catalyst
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  • A kind of preparation method of microreactor containing solid-carrying catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: Preparation of immobilized nano-palladium microreactor

[0029] (1) Dissolve 0.025mmol of 1,3,5-tris(4-aminophenyl)benzene in 5ml of mesitylene / dioxane (2:1, v / v) solvent, add 0.3 mmol of benzaldehyde to obtain the first solution;

[0030] (2) the trimesicaldehyde of 0.025mmol is dissolved in the mesitylene / dioxane (2:1, v / v) solvent of 5ml, the aniline of 0.3mmol is added, obtains the second solution;

[0031] (3) the first solution obtained in step 1 and the second solution obtained in step 2 are mixed to form a COF reaction solution;

[0032] (4) Dissolve 1.5 mmol of catalyst scandium trifluoromethanesulfonate in 0.1 ml of mesitylene / dioxane to obtain a COF catalyst solution.

[0033] (5) Add the COF reaction solution obtained in step 3 into the copper microchannel reactor, then add the COF catalyst solution obtained in step 4, and grow in-situ for 48h at room temperature until the thickness of the COF layer is 3um, to obtain a COF layer with a catalyst ...

Embodiment 2

[0036] Example 2: Preparation of immobilized gold nanoparticles microreactor

[0037] (1) 1mmol of 3,3'-dinitrobenzidine is dissolved in 10ml of ethanol, and 0.005mmol of 4-nitrobenzaldehyde is added to obtain the first solution;

[0038] (2) Dissolve 0.05 mmol of 2,4,6-tris(4-aldophenyl)-1,3,5-triazine in 50 ml of ethanol, add 10 mmol of 3-chloroaniline to obtain a second solution ;

[0039] (3) the first solution obtained in step 1 and the second solution obtained in step 2 are mixed to form a COF reaction solution;

[0040] (4) Dissolve 0.1 mmol of catalyst scandium trifluoromethanesulfonate in 1 ml of mesitylene / dioxane to obtain a COF catalyst solution.

[0041] (5) adding the COF reaction solution obtained in step 3 into the polymethyl methacrylate microchannel reactor, then adding the COF catalyst solution obtained in step 4, and in-situ growth at room temperature for 48h until the thickness of the COF layer is 5um, obtaining Microreactor with catalyst support COF la...

Embodiment 3

[0045] Example 3: Preparation of Immobilized D-Lactate Dehydrogenase Microreactor

[0046] (1) dissolve 0.05mmol of tris(4-aminophenyl)-1,3,5-triazine in 50ml of dichlorobenzene, add 10mmol of 2-naphthalenecarboxaldehyde to obtain the first solution;

[0047] (2) 1 mmol of 2,4,6-tris(4-aldophenyl)-1,3,5-triazine was dissolved in 10 ml of dichlorobenzene, and 0.005 mmol of heptylamine was added to obtain a second solution ;

[0048] (3) the first solution obtained in step 1 and the second solution obtained in step 2 are mixed to form a COF reaction solution;

[0049] (4) 0.5 mmol of catalyst benzenesulfonic acid was dissolved in 0.025 ml of ethyl acetate to obtain a COF catalyst solution.

[0050] (5) Add the COF reaction solution obtained in step 3 into the steel microchannel reactor, then add the COF catalyst solution obtained in step 4, and grow in-situ for 38 hours at room temperature until the thickness of the COF layer is 1 μm, to obtain a COF layer with a catalyst carr...

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Abstract

The invention discloses a preparation method of a microreactor containing an immobilized catalyst and belongs to the field of wall-immobilized microreactors containing catalysts. According to the method, an COF (covalent organic framework) material is adjusted and grown in situ by adding controlling agents to the inner wall of the microreactor to be served as a supported catalyst carrier. The microreactor has the characteristics of being high in catalysis efficiency, capable of preventing leakage of the catalyst, improving the stability of the catalyst and the like.

Description

technical field [0001] The invention belongs to the field of catalyst wall-supported microreactors, and in particular relates to a preparation method of a microreactor containing a solid-supported catalyst. Background technique [0002] In wall-mounted microreactors, a catalytic layer is often prepared on the inner wall of the channel to increase the specific surface area and enhance the transport of substances, and to make the reaction proceed uninterrupted to improve the conversion rate and selectivity of the reaction. Traditional wall-mounted microreactors usually adopt low specific surface area and single surface morphology of the support material, which leads to the problems of low actual catalyst loading, catalyst coalescence, catalyst leakage and high mass transfer resistance in the catalytic process. SUMMARY OF THE INVENTION [0003] In view of the problems existing in the prior art, the present invention provides a preparation method of a microreactor containing a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/00
CPCB01J19/0093
Inventor 刘平伟杨宇浩王崧王文俊
Owner ZHEJIANG UNIV
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