Electrochemical active species diffusion membrane electrode applied to organic solvent, manufacturing method, reactor and application of reactor

Abstract

The invention discloses an electrochemical active species diffusion membrane electrode applied to an organic solvent, a manufacturing method, a reactor and application of the reactor, the electrochemical active species diffusion membrane electrode comprises a gas barrier layer, an electrochemical reaction layer, an oleophobic gas diffusion layer and a chemical reaction layer, and the oleophobic gas diffusion layer is located between the electrochemical reaction layer and the chemical reaction layer. The electrochemical reaction layer is positioned between the oleophobic gas diffusion layer and the gas barrier layer; the electrolyte generates active substances on the electrochemical reaction layer after passing through the gas barrier layer, and the active substances penetrate through the oleophobic gas diffusion layer in a gas form to reach the chemical reaction layer to react with other chemical substances; the electrochemical active species diffusion membrane electrode is prepared by arranging the layers in sequence. The reactor comprises a chemical chamber and an electrochemical chamber, wherein the chemical chamber and the electrochemical chamber are separated by an electrochemical active species diffusion membrane electrode; the reactor is used for reduction and oxidation reactions in an organic solvent; the electrochemical reaction can be carried out in an organic solvent under the condition of no supporting electrolyte.

Description

Technical Field

[0001] The present invention belongs to the technical field of diffusion membrane electrodes, and in particular relates to an electrochemically active species diffusion membrane electrode applied to an organic solvent, a manufacturing method, a reactor and uses of the reactor. Background Art

[0002] The promotion of electrochemical synthesis technology is very important for green chemical industry. Many electrochemical technologies use water as a solvent, but the solubility of most organic compounds in water is poor, and the reactions that can be involved in aqueous electrochemical reactions are limited. The development of electrochemical synthesis in organic solvents also faces great challenges. On the one hand, more expensive supporting electrolytes, such as tetrabutylammonium perchlorate and tetrabutylammonium tetrafluoroborate, are required in organic solvents. On the other hand, supporting electrolytes can cause contamination to the reaction system and increase the cost of separation and purification. How to develop the use of supporting electrolyte-free electrochemical synthesis technology in organic solvents has become a new topic in the field of electrochemistry.

[0003] To overcome the problem of supporting electrolytes, one approach is to use ion exchange membrane electrodes to avoid the use of supporting electrolytes. However, ion exchange membranes cannot resist organic solvents and will quickly swell and cause damage. Another approach is to reduce costs by reducing the use of supporting electrolytes, but this will significantly increase the cell voltage of the reactor, resulting in increased energy consumption. Another approach is to use palladium membrane electrode reactors, but they have poor mechanical stability, are too expensive, and cannot perform oxidation reactions. Therefore, the development of new electrochemical reactors without supporting electrolytes for use in organic solvents is a task that scientists must face. Summary of the Invention

[0004] The purpose of the present invention is to solve the above-mentioned technical problems existing in the prior art and provide an electrochemically active species diffusion membrane electrode for organic solvents, a manufacturing method, a reactor and a use of the reactor, which can perform electrochemical reactions in organic solvents without supporting electrolyte conditions.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] An electrochemically active species diffusion membrane electrode for organic solvents comprises a gas barrier layer, an electrochemical reaction layer, an oleophobic gas diffusion layer, and a chemical reaction layer. The oleophobic gas diffusion layer is located between the electrochemical reaction layer and the chemical reaction layer, and the electrochemical reaction layer is located between the oleophobic gas diffusion layer and the gas barrier layer. After the electrolyte passes through the gas barrier layer, it generates active substances in the electrochemical reaction layer. The active substances then pass through the oleophobic gas diffusion layer in the form of gas to reach the chemical reaction layer and react with other chemical substances. This enables electrochemical reactions in organic solvents without supporting electrolytes.

[0007] Furthermore, the gas barrier layer is composed of a hydrophilic porous material; it allows the electrolyte to penetrate and blocks the reverse diffusion of gas phase products. One of hydrophilic nano-carbon powder, hydrophilic silica or hydrophilic alumina is selected.

[0008] Furthermore, the oleophobic gas diffusion layer is a porous oleophobic material. Composed of a porous material that has been oleophobically modified, the oleophobic gas diffusion layer can isolate the active species diffusion membrane from contact with the electrolyte and organic solvent on both sides of the electrode, allowing electrochemical reactions without supporting electrolytes to occur in organic solvents.

[0009] Furthermore, the oleophobic gas diffusion layer may be made of one of oleophobically modified polytetrafluoroethylene membrane, oleophobically modified carbon paper or oleophobically modified carbon cloth.

[0010] Furthermore, the electrochemical reaction layer is composed of a material having electrocatalytic activity for depositing active substances. The electrochemical reaction in the electrochemical reaction layer includes the process of electrolyzing and generating the active species from the electrolyte. The active species include reducing substances such as hydrogen and deuterium, and oxidizing substances such as chlorine and bromine.

[0011] Furthermore, the chemical reaction layer is composed of a material having the ability to react with other reactants by catalytic activity. The reaction of the chemical reaction layer includes the process of the active species reacting with other reactants in the organic solvent.

[0012] A method for manufacturing an electrochemically active species diffusion membrane electrode for organic solvents comprises the following steps:

[0013] S1, using one of polytetrafluoroethylene membrane, carbon paper or carbon cloth modified with oleophobic material as the oleophobic gas diffusion layer;

[0014] S2. coating a catalyst on one side of the oleophobic gas diffusion layer to obtain an electrochemical reaction layer;

[0015] S3, coating a hydrophilic porous material on the electrochemical reaction layer to obtain a gas barrier layer;

[0016] S4, coating the catalyst on the other side of the oleophobic gas diffusion layer to obtain a chemical reaction layer;

[0017] S5. Finally, the membrane is placed in an oven for heating to complete the preparation of the membrane electrode.

[0018] A reactor with an electrochemically active species diffusion membrane electrode for organic solvents comprises a chemical chamber and an electrochemical chamber, wherein the chemical chamber and the electrochemical chamber are separated by the electrochemically active species diffusion membrane electrode, and the electrochemically active species diffusion membrane electrode can serve as an anode, a cathode, or both.

[0019] Furthermore, the electrochemical chamber adopts a diaphragm-free structure or is provided with an ion exchange membrane; the number of chemical chambers is one, or two chemical chambers are constructed by two electrochemically active species diffusion membrane electrodes.

[0020] The invention discloses an electrochemically active species diffusion membrane electrode reactor applied to an organic solvent, which is used for reduction and oxidation reactions in the organic solvent.

[0021] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0022] 1. Achieve electrochemical synthesis of organic solvents without supporting electrolytes: The oleophobic gas diffusion layer blocks direct contact between the organic solvent and the electrolyte, eliminating the need for adding supporting electrolytes in traditional reactors, reducing production costs and eliminating product contamination. The gas barrier layer and the oleophobic gas diffusion layer work synergistically to ensure efficient transmission of active species in gaseous form while preventing organic solvent penetration.

[0023] 2. Enhanced reactor stability and flexibility: The oleophobic gas diffusion layer can withstand long-term erosion by organic solvents, avoiding the swelling problem of traditional ion exchange membranes. The reactor supports the electrochemical chamber to adopt a diaphragm-free structure or to be provided with an ion exchange membrane and a single chemical chamber, or to construct two chemical chambers through two electrochemically active species diffusion membrane electrodes, which is compatible with reduction and oxidation reactions and broadens the application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings:

[0025] Figure 1 This is a schematic structural diagram of an electrochemically active species diffusion membrane electrode for organic solvents according to the present invention;

[0026] Figure 2 It is a schematic structural diagram of the electrochemically active species diffusion membrane electrode reactor in the present invention.

[0027] In the figure, 1-gas barrier layer; 2-electrochemical reaction layer; 3-oleophobic gas diffusion layer; 4-chemical reaction layer; 5-electrochemically active species diffusion membrane electrode; 6-ion exchange membrane; 7-platinum electrode; 8-power supply; 9-chemical chamber; 10-electrochemical chamber. DETAILED DESCRIPTION

[0028] like Figure 1As shown, an electrochemically active species diffusion membrane electrode for organic solvents includes a gas barrier layer 1, an electrochemical reaction layer 2, an oleophobic gas diffusion layer 3 and a chemical reaction layer 4. The oleophobic gas diffusion layer 3 is located between the electrochemical reaction layer 2 and the chemical reaction layer 4, and the electrochemical reaction layer 2 is located between the oleophobic gas diffusion layer and the gas barrier layer 1. After the electrolyte passes through the gas barrier layer, it generates active substances in the electrochemical reaction layer 2 and passes through the oleophobic gas diffusion layer 3 in the form of gas to reach the chemical reaction layer to react with other chemical substances.

[0029] The gas barrier layer 1 is composed of a lyophilic, porous material; it allows electrolyte permeation while preventing reverse diffusion of gaseous products. The oleophobic gas diffusion layer 3 is a porous, oleophobic material. Composed of a porous material that has been oleophobically modified, the oleophobic gas diffusion layer 3 isolates the active species diffusion membrane electrode from contact with the electrolyte and organic solvent, allowing electrochemical reactions without a supporting electrolyte to occur in the organic solvent. The oleophobic gas diffusion layer 3 can be made of an oleophobically modified polytetrafluoroethylene membrane, oleophobically modified carbon paper, or oleophobically modified carbon cloth. The electrochemical reaction layer 2 is composed of a material with electrocatalytic activity that allows the precipitation of active species. The electrochemical reaction in the electrochemical reaction layer 2 involves the electrolytic generation of active species from the electrolyte. Active species include reducing substances such as hydrogen and deuterium, as well as oxidizing substances such as chlorine and bromine. The chemical reaction layer 4 is composed of a material capable of catalytically reacting active species with other reactants. The reaction of the chemical reaction layer 4 includes the process of the active species reacting with other reactants in the organic solvent.

[0030] A method for manufacturing an electrochemically active species diffusion membrane electrode for organic solvents comprises the following steps:

[0031] S1, using one of polytetrafluoroethylene membrane, carbon paper or carbon cloth modified with oleophobic material as the oleophobic gas diffusion layer;

[0032] S2. coating a catalyst on one side of the oleophobic gas diffusion layer to obtain an electrochemical reaction layer;

[0033] S3, coating a hydrophilic porous material on the electrochemical reaction layer to obtain a gas barrier layer;

[0034] S4, coating the catalyst on the other side of the oleophobic gas diffusion layer to obtain a chemical reaction layer;

[0035] S5. Finally, the membrane is placed in an oven for heating to complete the preparation of the membrane electrode.

[0036] like Figure 2Figure 2 shows an electrochemically active species diffusion membrane electrode reactor for organic solvents according to the present invention. The reactor comprises a chemical chamber 9 and an electrochemical chamber 10, separated by an electrochemically active species diffusion membrane electrode 5. The electrochemically active species diffusion membrane electrode 5 can function as an anode, a cathode, or both. The electrochemically active species diffusion membrane electrode reactor of the present invention is manufactured by installing the chemical chamber 9, electrochemical chamber 10, electrochemically active species diffusion membrane electrode 5, platinum electrode 7, counter electrode, and ion exchange membrane 6 into an electrolytic cell.

[0037] The electrochemical chamber adopts a diaphragm-free structure or is provided with an ion exchange membrane; the number of chemical chambers is one, or two chemical chambers are constructed by two electrochemically active species diffusion membrane electrodes.

[0038] The invention discloses an electrochemically active species diffusion membrane electrode reactor applied to an organic solvent, which is used for reduction and oxidation reactions in the organic solvent.

[0039] Example 1:

[0040] Preparation of electrochemically active species diffusion membrane electrode and reactor assembly: A porous polytetrafluoroethylene film modified with oleophobic material is used as the oleophobic gas diffusion layer. 20mg of Pt / C catalyst is coated on the side of the gas diffusion layer facing the electrochemical chamber to obtain a Pt / C electrochemical reaction layer. Subsequently, 20mg of hydrophilic porous material is coated on the electrochemical reaction layer to obtain a gas barrier layer. Then, 20mg of RuPt / C catalyst is coated on the side of the gas diffusion layer facing the chemical chamber to obtain a chemical reaction layer. Finally, the membrane is placed in an oven at 200°C and heated for 2 hours to complete the preparation of the membrane electrode. The electrode area is 5cm 2 The electrochemically active species diffusion membrane is used as the cathode, the platinum electrode is used as the anode, and the cation exchange membrane is used as the ion exchange membrane. The electrolytic cell has a cathode chemical chamber, a cathode electrochemical chamber, and an anode electrochemical chamber. The volume of each reaction chamber is 50 cm 3 .

[0041] Application of an electrochemically active species diffusion membrane electrode reactor in electrochemical reactions; electrochemical hydrogenation reaction. 30 mL of a 0.1 M phenol-methanol solution was added to the cathode electrochemical chamber, and 40 mL of a 0.5 M sulfuric acid aqueous solution was added to the cathode and anode electrochemical chambers, respectively. An 80 mA current was applied. After 7 hours of reaction, the solution in the cathode electrochemical chamber was converted into a cyclohexanol solution, with a reaction conversion rate exceeding 98% and a cyclohexanol yield exceeding 80%. No sulfuric acid was detected in the electrochemical chamber solution.

[0042] Example 2:

[0043] Preparation of electrochemically active species diffusion membrane electrode and reactor assembly: A porous polytetrafluoroethylene film modified with oleophobic material is used as the oleophobic gas diffusion layer. 20mg of Pt / C catalyst is coated on the side of the gas diffusion layer facing the electrochemical chamber to obtain a Pt / C electrochemical reaction layer. Subsequently, 20mg of hydrophilic porous material is coated on the Pt / C electrochemical reaction layer to obtain a gas barrier layer. Then, 20mg of Pd / C catalyst is coated on the side of the gas diffusion layer facing the chemical chamber to obtain a chemical reaction layer. Finally, the membrane is placed in an oven at 200°C and heated for 2 hours to complete the preparation of the membrane electrode. The electrode area is 5cm 2 The electrochemically active species diffusion membrane is used as the cathode, the platinum electrode is used as the anode, and the cation exchange membrane is used as the ion exchange membrane. The electrolytic cell has a cathode chemical chamber, a cathode electrochemical chamber, and an anode electrochemical chamber. The volume of each reaction chamber is 50 cm 3 .

[0044] Application of an electrochemically active species diffusion membrane electrode reactor in electrochemical reactions; electrochemical deuterium addition reaction. 30 mL of a 0.1 M 2-chloroacetanilide methanol solution was added to the cathode electrochemical chamber, and 40 mL of a 0.5 M sodium sulfate deuterium aqueous solution was added to the cathode and anodic electrochemical chambers, respectively. A 100 mA current was applied. After 9 hours of reaction, the solution in the cathode electrochemical chamber was converted into a 2-deuterated acetanilide aqueous solution, with a reaction conversion rate exceeding 97% and a 2-deuterated acetanilide yield exceeding 90%. No sulfuric acid was detected in the electrochemical chamber solutions.

[0045] Example 3:

[0046] Preparation of electrochemically active species diffusion membrane electrode and reactor assembly: A porous polytetrafluoroethylene film modified with oleophobic material was used as the oleophobic gas diffusion layer; 20 mg of RuO2 catalyst was coated on the side of the gas diffusion layer facing the electrochemical chamber to obtain the RuO2 electrochemical reaction layer; then, 20 mg of hydrophilic porous material was coated on the electrochemical reaction layer to obtain the gas barrier layer; then, 20 mg of PTFE was coated on the side of the gas diffusion layer facing the chemical chamber to obtain the chemical reaction layer; finally, the membrane was placed in an oven at 200°C and heated for 2 hours to complete the preparation of the membrane electrode, with an electrode area of 5 cm 2 The electrochemically active species diffusion membrane is used as the anode, the platinum electrode is used as the cathode, and the cation exchange membrane is used as the ion exchange membrane. The electrolytic cell has an anode chemical chamber, an anode electrochemical chamber, and a cathode electrochemical chamber. The volume of each reaction chamber is 50 cm 3 .

[0047] Application of an electrochemically active species diffusion membrane electrode reactor for electrochemical halogenation in organic solvents; chlorination reaction in electrochemical halogenation reactions. 30 mL of a 0.1 M naproxen solution in chloroform was added to the anodic chamber, and 40 mL of a 3 M sodium chloride aqueous solution was added to the anodic and cathodic chambers, respectively. After a 120 mA current was applied and the reaction lasted for 5 hours, the solution in the anodic chamber was converted into a 5-chloronaproxen solution, with a reaction conversion rate exceeding 99% and a 5-chloronaproxen yield exceeding 82%. No naproxen or 5-chloronaproxen was detected in the electrochemical chamber solution.

[0048] Example 4:

[0049] Preparation of electrochemically active species diffusion membrane electrode and reactor assembly: A porous polytetrafluoroethylene film modified with oleophobic material was used as the oleophobic gas diffusion layer; 20 mg of RuO2 catalyst was coated on the side of the gas diffusion layer facing the electrochemical chamber to obtain the RuO2 electrochemical reaction layer; then, 20 mg of hydrophilic porous material was coated on the electrochemical reaction layer to obtain the gas barrier layer; then, 20 mg of PTFE was coated on the side of the gas diffusion layer facing the chemical chamber to obtain the chemical reaction layer; finally, the membrane was placed in an oven at 200°C and heated for 2 hours to complete the preparation of the membrane electrode, with an electrode area of 5 cm 2 The electrochemically active species diffusion membrane is used as the anode, the platinum electrode is used as the cathode, and the cation exchange membrane is used as the ion exchange membrane. The electrolytic cell has an anode chemical chamber, an anode electrochemical chamber, and a cathode electrochemical chamber. The volume of each reaction chamber is 50 cm 3 .

[0050] Application of an electrochemically active species diffusion membrane electrode reactor for electrochemical halogenation in organic solvents; bromination reaction in electrochemical halogenation reactions. 30 mL of a 0.1 M phenoxyacetic acid solution in dibromomethane was added to the anodic chamber, and 40 mL of a 3 M acidified sodium bromide solution was added to the anodic chamber and the anodic chamber, respectively. A current of 100 mA was applied, and the reaction temperature was controlled above 70°C. After 6 hours of reaction, the solution in the anodic chamber was converted into a 4-bromophenoxyacetic acid solution, with a reaction conversion rate exceeding 99% and a 4-bromophenoxyacetic acid yield exceeding 91%. No phenoxyacetic acid or bromophenoxyacetic acid was detected in the electrochemical chamber solution.

[0051] Example 5:

[0052] Preparation of two electrochemically active species diffusion membrane electrodes and reactor assembly: a porous polytetrafluoroethylene film modified with oleophobic material was used as the oleophobic gas diffusion layer; 20 mg of Pt / C catalyst was coated on the side of the gas diffusion layer facing the electrochemical chamber to obtain a Pt / C electrochemical reaction layer; subsequently, 20 mg of hydrophilic porous material was coated on the electrochemical reaction layer to obtain a gas barrier layer; then, 20 mg of Pd / C catalyst was coated on the side of the gas diffusion layer facing the chemical chamber to obtain a chemical reaction layer; finally, the membrane was placed in an oven at 200°C and heated for 2 hours to complete the preparation of membrane electrode A, with an electrode area of 5 cm 2 The porous carbon paper modified with oleophobic material was used as the oleophobic gas diffusion layer. 20 mg of RuO2 catalyst was coated on the side of the gas diffusion layer facing the electrochemical chamber to obtain the RuO2 electrochemical reaction layer. Subsequently, 20 mg of hydrophilic porous material was coated on the electrochemical reaction layer to obtain the gas barrier layer. Then, 20 mg of PTFE was coated on the side of the gas diffusion layer facing the chemical chamber to obtain the chemical reaction layer. Finally, the membrane was placed in an oven at 200°C and heated for 2 hours to complete the preparation of membrane electrode B. The electrode area was 5 cm 2 The electrochemically active species diffusion membrane electrode A is used as the cathode, the electrochemically active species diffusion membrane electrode B is used as the anode, and the cation exchange membrane is used as the ion exchange membrane. The electrolytic cell has a cathode chemical chamber, a cathode electrochemical chamber, an anode electrochemical chamber, and an anode chemical chamber. The volume of each reaction chamber is 50 cm 3 .

[0053] Application of an electrochemically active species diffusion membrane electrode reactor in electrochemical reactions; paired electrochemical hydrogenation and halogenation reactions. 30 mL of a 0.1 M 2-chloroacetanilide methanol solution was added to the cathode chemical chamber, and 40 mL of a 0.5 M sulfuric acid aqueous solution was added to the cathode electrochemical chamber. 30 mL of a 0.5 M naproxen chloroform solution was added to the anodic chemical chamber, and 40 mL of a 3 M sodium chloride aqueous solution was added to the anodic electrochemical chamber. After a 200 mA current was applied and the reaction lasted for 10 hours, the solution in the cathode chemical chamber was converted to an acetanilide aqueous solution with a reaction conversion rate greater than 95% and an acetanilide yield greater than 93%. The solution in the anodic chemical chamber was converted to a 5-chloronaproxen solution with a reaction conversion rate greater than 99% and a 5-chloronaproxen yield greater than 75%. No 2-chloroacetanilide, acetanilide, naproxen, or 5-chloronaproxen was detected in the electrochemical chamber solution.

[0054] Comparative Example 1:

[0055] Preparation of electrochemically active species diffusion membrane electrode and reactor assembly: Hydrophobic but non-oleophobic porous carbon paper is used as the oleophobic gas diffusion layer; 20mg of Pt / C catalyst is coated on the side of the gas diffusion layer facing the electrochemical chamber to obtain a Pt / C electrochemical reaction layer; then, 20mg of hydrophilic porous material is coated on the electrochemical reaction layer to obtain a gas barrier layer; then, 20mg of RuPt / C catalyst is coated on the side of the gas diffusion layer facing the chemical chamber to obtain a chemical reaction layer, completing the preparation of the membrane electrode. The electrode area is 5cm 2 The electrochemically active species diffusion membrane is used as the cathode, the platinum electrode is used as the anode, and the cation exchange membrane is used as the ion exchange membrane. The electrolytic cell has a cathode chemical chamber, a cathode electrochemical chamber, and an anode electrochemical chamber. The volume of each reaction chamber is 50 cm 3 .

[0056] Application of an electrochemically active species diffusion membrane electrode reactor in an electrochemical reaction: 30 mL of a 0.1 M 2-chloroacetanilide methanol solution was added to the cathode chemical chamber, and 40 mL of a 0.5 M sulfuric acid aqueous solution was added to the cathode and anode electrochemical chambers, respectively. An 80 mA current was applied and the reaction lasted for 0.5 hours. Cross-contamination between the chemical and electrochemical chambers was observed. No significant amount of sulfuric acid was detected in the chemical chamber solution, while significant amounts of 2-chloroacetanilide were detected in the electrochemical solution. The reaction conversion rate was less than 20%.

[0057] Comparative Example 2:

[0058] Preparation of electrochemically active species diffusion membrane electrode and reactor assembly: A porous polytetrafluoroethylene film modified with oleophobic material is used as the gas diffusion layer. 20mg of Pt / C catalyst is coated on the side of the gas diffusion layer facing the electrochemical chamber to obtain a Pt / C electrochemical reaction layer. Subsequently, 20mg of hydrophilic porous material is coated on the electrochemical reaction layer to obtain a gas barrier layer. Then, 20mg of RuPt / C catalyst is coated on the side of the gas diffusion layer facing the chemical chamber to obtain a chemical reaction layer, completing the preparation of the membrane electrode. The electrode area is 5cm 2 The electrochemically active species diffusion membrane is used as the cathode, the platinum electrode is used as the anode, and the cation exchange membrane is used as the ion exchange membrane. The electrolytic cell has a cathode chemical chamber, a cathode electrochemical chamber, and an anode electrochemical chamber. The volume of each reaction chamber is 50 cm 3 .

[0059] Application of an electrochemically active species diffusion membrane electrode reactor in electrochemical reactions; electrochemical hydrogenation reaction. 30 mL of a 0.1 M phenol-methanol solution was added to the cathode electrochemical chamber, and 40 mL of a 0.5 M sulfuric acid aqueous solution was added to the cathode and anode electrochemical chambers, respectively. An 80 mA current was applied. After 7 hours of reaction, the solution in the cathode electrochemical chamber was converted into a cyclohexanol solution, with a reaction conversion rate exceeding 98% and a cyclohexanol yield exceeding 80%. No sulfuric acid was detected in the electrochemical chamber solution.

[0060] The present invention solves the key problem of electrochemical synthesis without supporting electrolyte in organic solvents through the innovative design of electrochemically active species diffusion membrane electrode, has both high reaction efficiency and low cost, and shows significant advantages in reduction and oxidation reactions in organic solvents.

[0061] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications based on the present invention to solve substantially the same technical problems and achieve substantially the same technical effects are all included in the scope of protection of the present invention.

Claims

1. An electrochemically active species diffusion membrane electrode for organic solvents, characterized by: The invention comprises a gas barrier layer, an electrochemical reaction layer, an oleophobic gas diffusion layer and a chemical reaction layer, wherein the oleophobic gas diffusion layer is located between the electrochemical reaction layer and the chemical reaction layer, and the electrochemical reaction layer is located between the oleophobic gas diffusion layer and the gas barrier layer; after the electrolyte passes through the gas barrier layer, it generates active substances in the electrochemical reaction layer, and then passes through the oleophobic gas diffusion layer in the form of gas to reach the chemical reaction layer to react with other chemical substances.

2. The electrochemically active species diffusion membrane electrode for organic solvents according to claim 1, Its characteristics are: The gas barrier layer is composed of a hydrophilic porous material; it allows the electrolyte to penetrate and blocks the reverse diffusion of gas phase products, and is selected from one of hydrophilic nano-carbon powder, hydrophilic silicon dioxide or hydrophilic aluminum oxide.

3. The electrochemically active species diffusion membrane electrode for organic solvents according to claim 1, characterized in that: The electrochemical reaction layer is composed of a material having electrocatalytic activity for depositing active substances.

4. The electrochemically active species diffusion membrane electrode for organic solvents according to claim 1, characterized in that: The oleophobic gas diffusion layer is made of a porous oleophobic material.

5. The electrochemically active species diffusion membrane electrode for organic solvents according to claim 4, characterized in that: The oleophobic gas diffusion layer may be made of one of oleophobically modified polytetrafluoroethylene membrane, oleophobically modified carbon paper or oleophobically modified carbon cloth.

6. The electrochemically active species diffusion membrane electrode for organic solvents according to claim 4, characterized in that: The chemical reaction layer is composed of a material having the ability to react with other reactants through catalytic activity.

7. A method for manufacturing an electrochemically active species diffusion membrane electrode for organic solvents according to any one of claims 1 to 6, characterized in that The steps include: S1, using one of polytetrafluoroethylene membrane, carbon paper or carbon cloth modified with oleophobic material as the oleophobic gas diffusion layer; S2. coating a catalyst on one side of the oleophobic gas diffusion layer to obtain an electrochemical reaction layer; S3, coating a hydrophilic porous material on the electrochemical reaction layer to obtain a gas barrier layer; S4, coating the catalyst on the other side of the oleophobic gas diffusion layer to obtain a chemical reaction layer; S5. Finally, the membrane is placed in an oven for heating to complete the preparation of the membrane electrode.

8. A reactor for an electrochemically active species diffusion membrane electrode for an organic solvent according to any one of claims 1 to 6, characterized in that: The invention comprises a chemical chamber and an electrochemical chamber, wherein the chemical chamber and the electrochemical chamber are separated by the electrochemically active species diffusion membrane electrode according to any one of claims 1 to 6.

9. The reactor of electrochemically active species diffusion membrane electrode for organic solvents according to claim 8, characterized in that: The electrochemical chamber adopts a membrane-free structure or is provided with an ion exchange membrane; the number of the chemical chamber is one, or two chemical chambers are constructed by two electrochemically active species diffusion membrane electrodes.

10. The use of an electrochemically active species diffusion membrane electrode reactor for organic solvents according to claim 8, characterized in that: Used for reduction and oxidation reactions in organic solvents.

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