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CO2 catalytic reduction device and application thereof

A catalyst, photoelectric catalysis technology, applied in the direction of electrode shape/type, cell, electrolysis process, etc., can solve the problems of good selectivity, difficulty in having a catalytic system at the same time, difficulty in recycling coenzymes, etc., and achieve the effect of slow reaction rate

Active Publication Date: 2022-04-19
TAIYUAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]The present invention is to solve the problem that coenzymes are difficult to recycle in the existing enzyme-catalyzed CO2 reduction technology, and it is difficult for the traditional catalytic system to simultaneously have the process To solve the problems of mildness and controllability, high catalytic efficiency and good selectivity, a device containing a photoelectric catalytic composite membrane is provided, which can realize CO2 reduction device coupled with photocatalytic and enzymatic catalysis for coenzyme recycling and application

Method used

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  • CO2 catalytic reduction device and application thereof
  • CO2 catalytic reduction device and application thereof
  • CO2 catalytic reduction device and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Such as figure 1 As shown, a CO 2 The catalytic reduction device comprises a reactor, a photoelectric catalytic composite membrane, a cathode, an anode, a DC power supply, and a light source; the photoelectric catalytic composite membrane is arranged in the reactor, and the reactor is divided into an anode chamber and a cathode chamber, and the anode and cathode respectively arranged in the anode chamber and the cathode chamber, the positive pole and the negative pole of the DC power supply are respectively connected to the anode and the cathode, and the light source is arranged above the cathode chamber;

[0029] The photoelectrocatalytic composite membrane is composed of a bipolar membrane and a metal nickel mesh loaded with a photocatalyst on the surface, the bipolar membrane is composed of an anion exchange membrane and a cation exchange membrane, the metal nickel mesh is used as the cathode, and the platinum sheet is used as the anode. The metal nickel mesh with p...

Embodiment 2

[0040] The difference from Example 1 is that the preparation method of the photoelectrocatalytic composite film, the specific steps are as follows:

[0041] (1) Mix polyvinylpyrrolidone and quaternary ammonium polysulfone with a mass ratio of 2:1 and pour it into a beaker, add acetic acid aqueous solution with a mass fraction of 0.02%, stir continuously in a constant temperature water bath at 50°C, and add glutaraldehyde after completely dissolving , continue to stir for 1 hour, after static defoaming, cast on a flat and clean glass plate with a frame, put it into a blast drying oven to dry, and obtain an anion exchange membrane;

[0042] (2) Mix polyvinylpyrrolidone and sodium cellulose phosphate of equal mass and pour it into a beaker, add deionized water while stirring, heat to 60°C to dissolve, and add CaCl after it is completely dissolved 2 The solution was continuously stirred for 1 hour, and after standing for defoaming, it was cast on the surface of the anion exchange ...

Embodiment 3

[0046] The difference from Example 1 is that the preparation method of the photoelectrocatalytic composite film, the specific steps are as follows:

[0047] (1) Mix polyethylene benzyl chloride and polyimide with a mass ratio of 3:1 and pour it into a beaker, add an aqueous solution of acetic acid with a mass fraction of 0.03%, stir continuously in a constant temperature water bath at 60°C, and dissolve it completely Add glutaraldehyde, continue to stir for 1.5h, let it stand for degassing, cast it on a flat and clean glass plate with a frame, and put it into a blast drying oven to dry to obtain an anion exchange membrane;

[0048] (2) Mix polyphenylene ether and sodium cellulose sulfonate with equal mass and pour it into a beaker, add deionized water under stirring, heat to 70°C to dissolve, and add CaCl after it is completely dissolved 2 The solution was continuously stirred for 1 hour, and after standing for defoaming, it was cast on the surface of the anion exchange membra...

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Abstract

The invention belongs to the field of CO2 catalytic reduction, particularly relates to a CO2 catalytic reduction device and application thereof, and aims to solve the problems that in an existing enzyme catalysis CO2 reduction technology, coenzyme is difficult to recycle, and a traditional catalytic system is difficult to have mild and controllable process, high catalytic efficiency and good selectivity at the same time. The invention relates to a device containing a photoelectrocatalysis composite membrane, in particular to a photoelectrocatalysis and enzyme catalysis coupled CO2 reduction device capable of realizing cyclic utilization of coenzyme. The device comprises a photoelectrocatalysis composite membrane, an anode chamber, a cathode chamber, an anode and a cathode, wherein the anode chamber and the cathode chamber are divided by the photoelectrocatalysis composite membrane. A photoelectrocatalysis composite membrane is used as a diaphragm of an anode chamber and a cathode chamber, an electrolyte aqueous solution is added into the anode chamber, a CO2PBS solution containing enzyme and coenzyme is added into the cathode chamber, and CO2 reduction reaction is carried out under xenon lamp illumination and external voltage.

Description

technical field [0001] The invention belongs to CO 2 The field of catalytic reduction, specifically related to a CO 2 Catalytic reduction device and its application. Background technique [0002] Carbon dioxide is one of the main gases that cause the global "greenhouse effect". Reducing carbon dioxide into low-carbon new energy can not only reduce CO 2 At the same time, it can generate basic chemicals and fuels, which has very important practical significance for solving the increasingly serious environmental and energy problems, and at the same time plays a positive role in promoting my country's strategic goal of "carbon peaking and carbon neutrality". Currently, researchers have developed a variety of CO 2 Transformation pathways, such as thermochemical, photochemical, electrochemical and biological enzymatic methods. However, due to CO 2 The molecule is stable and the activation is difficult. Use the above method to reduce CO 2 When , it is difficult to construct ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B3/07C25B3/21C25B3/26C25B9/23C25B11/02
CPCC25B3/07C25B3/26C25B3/21C25B9/23C25B11/02Y02A50/20
Inventor 刘宪文斌赵婷婷董金龙陈恒白宇洁曹晋瑜李子怡
Owner TAIYUAN NORMAL UNIV
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