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Preparation method of microreactor containing immobilized catalyst

A technology of immobilized catalysts and microreactors, applied in chemical instruments and methods, chemical/physical/physicochemical reactors, chemical/physical processes, etc., can solve catalyst leakage and mass transfer resistance, low specific surface area of ​​carrier materials, catalyst To solve the problem of low loading capacity, achieve the effect of strengthening the mass transfer between raw materials and catalysts, not easy to coalesce, and precise and regular pore structure

Active Publication Date: 2019-12-03
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Preparation method of microreactor containing immobilized catalyst
  • Preparation method of microreactor containing immobilized catalyst
  • Preparation method of microreactor containing immobilized catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: Preparation of solid-loaded 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 The benzaldehyde of mmol obtains the first solution;

[0030] (2) 0.025 mmol of trimesin was dissolved in 5 ml of mesitylene / dioxane (2:1, v / v) solvent, and 0.3 mmol of aniline was added to obtain a second solution;

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

[0032] (4) Dissolve 1.5 mmol of the 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 to the copper microchannel reactor, then add the COF catalyst solution obtained in step 4, and grow in situ at room temperature for 48 hours until the thickness of the COF layer is 3um, and obtain a COF layer with a catalyst car...

Embodiment 2

[0036] Embodiment 2: Preparation of immobilized nano-gold microreactor

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

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

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

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

[0041] (5) Add the COF reaction solution obtained in step 3 into the polymethyl methacrylate microchannel reactor, then add the COF catalyst solution obtained in step 4, and grow in situ at room temperature for 48 hours until the thickness of the COF layer is 5um, and obtain Microreactor with catalyst support COF layer...

Embodiment 3

[0045] Example 3: Preparation of immobilized D-lactate dehydrogenase microreactor

[0046] (1) 0.05 mmol of tris(4-aminophenyl)-1,3,5-triazine was dissolved in 50 ml of dichlorobenzene, and 10 mmol of 2-naphthaldehyde was added to obtain the first solution;

[0047] (2) Dissolve 1 mmol of 2,4,6-tris(4-formylphenyl)-1,3,5-triazine in 10 ml of dichlorobenzene, add 0.005 mmol of heptylamine to obtain a second solution ;

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

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

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

...

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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-mounted microreactors, and in particular relates to a preparation method of a microreactor containing solid-loaded catalysts. Background technique [0002] Wall-mounted microreactors often prepare a catalytic layer on the inner wall of the channel to increase the specific surface area and enhance material transport, and to make the reaction uninterrupted to improve the conversion rate and selectivity of the reaction. 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. Contents of the invention [0003] Aiming at the problems in the prior art, the invention provides a method for preparing a microreactor containing a solid-supported catalyst. [0004] The present i...

Claims

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Application Information

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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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