CN215163204U - High-efficiency electrolytic cell for electrocatalytic hydrogen peroxide production reaction - Google Patents
High-efficiency electrolytic cell for electrocatalytic hydrogen peroxide production reaction Download PDFInfo
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- CN215163204U CN215163204U CN202120892544.9U CN202120892544U CN215163204U CN 215163204 U CN215163204 U CN 215163204U CN 202120892544 U CN202120892544 U CN 202120892544U CN 215163204 U CN215163204 U CN 215163204U
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Abstract
The utility model discloses a high-efficiency electrocatalysis hydrogen peroxide production reaction electrolytic tank, which belongs to the technical field of electrolytic tanks for electrocatalysis hydrogen peroxide production, and comprises an anode and a cathode, wherein the cathode is connected with the anode through a proton exchange membrane, an anode electrode of the anode is arranged between an anode flowing tank and a PTEE material sealing plate, the other side of the PTEE material sealing plate is a stainless steel end plate, and the anode flowing tank is connected with an anode liquid storage tank through a silica gel hose to form a circulation loop; the cathode flow tank of the cathode is connected with the cathode liquid storage tank through a silica gel hose to form a circulation loop, the cathode electrode is arranged between the cathode flow tank and the hydrophobic carbon paper, the other side of the hydrophobic carbon paper is connected with one side of the gas flow tank, and the other side of the gas flow tank is connected with the stainless steel end plate. The utility model discloses a proton exchange membrane separates negative and positive poles of the earth, makes it can react separately and not disturb, and the quick even diffusion participation reaction of reactant (oxygen) can be realized to the gas flow groove.
Description
Technical Field
The utility model belongs to the technical field of electrolytic cell of hydrogen peroxide solution is produced in the electro-catalysis, concretely relates to high-efficient electro-catalysis produces hydrogen peroxide solution reaction electrolytic cell.
Background
Hydrogen peroxide (H)2O2Hydrogen peroxide) is an important chemical product, and is widely applied to various fields such as bleaching, spinning, wastewater treatment, disinfection, semiconductor preparation and the like as a green and pollution-free inorganic compound. Hydrogen peroxide is defined as a green chemical product, its strong oxidizing property and its reduction product (H)2O) non-toxic and harmless properties make it a chemical agent widely used in industrial disinfection and medical aid. The traditional hydrogen peroxide preparation process is an indirect anthraquinone process, large-scale equipment and a large amount of energy input are needed in the method, raw materials are hazardous to a certain extent, a large amount of waste materials are produced in the production process, and the method is not environment-friendly. Therefore, the method for producing the hydrogen peroxide by using the simple equipment is urgent.
The development of electrochemical Oxygen Reduction Reaction (ORR) to generate hydrogen peroxide at present makes the site production and equipment miniaturization of hydrogen peroxide have a new route, and the scheme of the selective oxygen reduction reaction to generate hydrogen peroxide electrochemistry can effectively solve the problems existing in the indirect anthraquinone method. In ORR, processes involving multiple electron transfer are involved, in which O2Can be converted into H in a four-electron process2Conversion of O or two electrons to H2O2. There is a need for efficient and inexpensive electrocatalysts that undergo two-electron reactions. The characterization of the electrocatalysts properties is not well-established for convenient and practical purpose-built electrolytic cells, the electrolytic cells currently used in such electrochemical processes are generally simple three-electrode single cell electrochemicalThe reactions of the cathode and the anode of the chemical cell interfere with each other, the electrode cannot be reasonably fixed, the controllability of ventilation and gas discharge is not high, the ventilation effect is not good, and the instant taking out and detection of the hydrogen peroxide product are inconvenient. The small-scale rationalization of the equipment can achieve the purpose of small-scale in-situ hydrogen peroxide production.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a high-efficient catalysis hydrogen peroxide solution of producing reaction electrolytic cell.
In order to achieve the purpose, the following technical scheme is provided:
a high-efficiency electrocatalytic hydrogen peroxide production reaction electrolytic cell comprises an anode and a cathode, wherein the cathode is connected with the anode through a proton exchange membrane, the anode comprises an anode flow tank, an anode electrode, a PTEE material sealing plate, a stainless steel end plate, a silica gel hose and an anode reservoir, the anode electrode is arranged between the anode flow tank and the PTEE material sealing plate, the stainless steel end plate is arranged on the other side of the PTEE material sealing plate, and the anode flow tank is connected with the anode reservoir through the silica gel hose to form a circulation loop; the negative pole includes cathode flow groove, cathode electrode, hydrophobic carbon paper, the gas flow groove, the stainless steel end plate, silica gel hose and cathode reservoir, cathode flow groove passes through the silica gel hose and is connected with the cathode reservoir and constitutes circulation loop, cathode electrode locates between cathode flow groove and the hydrophobic carbon paper, one side of gas flow groove is connected to the opposite side of hydrophobic carbon paper, the stainless steel end plate is connected to the opposite side of gas flow groove, one side of anode electrode sets up the PTEE material closing plate earlier because the material of stainless steel end plate can participate in the reaction, and the hardness of PTEE material is not enough, consequently need add the stainless steel end plate outside.
Further, the anode flow groove and the cathode flow groove are of a full hollow structure in the middle, a liquid inlet and a liquid outlet are respectively arranged on the edge portions of the anode flow groove and are respectively connected with the silica gel hose, and liquid enters the hollow space in the middle of the anode flow groove from the liquid inlet.
Further, the proton exchange membrane is arranged between the anode flow cell and the cathode flow cell.
Furthermore, the middle part of the gas flowing groove is a semi-hollow groove, one sealed side of the gas flowing groove is connected with a stainless steel end plate, the edge part of the gas flowing groove is respectively provided with a gas inlet and a gas outlet which are respectively connected with a gas guide tube, and gas enters the semi-hollow groove in the gas flowing groove from the gas inlet.
Furthermore, the screws sequentially penetrate through a stainless steel end plate of the cathode, a gas flowing groove, hydrophobic carbon paper, a cathode electrode, a cathode flowing groove, a proton exchange membrane, an anode flowing groove, an anode electrode, a PTEE material sealing plate and a stainless steel end plate of the anode to realize fixed and integrated connection.
Furthermore, a gasket is padded between the hydrophobic carbon paper and the cathode electrode.
Furthermore, gaskets are respectively filled between the hydrophobic carbon paper and the gas flowing groove, between the cathode electrode and the cathode flowing groove, between the proton exchange membrane and the cathode flowing groove and between the proton exchange membrane and the anode flowing groove, and between the anode flowing groove and the anode electrode, and the gaskets are arranged to prevent gas leakage and liquid leakage.
Further, the liquid inlet and the liquid outlet are respectively connected with the silica gel hose in a sealing manner through a pagoda joint.
Furthermore, the air inlet and the air outlet are respectively connected with the air duct in a sealing way through the ferrule connector.
Further, the silica gel hose (7) is connected with a peristaltic pump, and liquid circulation is achieved through the peristaltic pump.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1) the utility model discloses the electrolytic bath separates negative pole flowing groove and positive pole flowing groove through proton exchange membrane, is favorable to studying the half reaction that negative pole, positive pole take place respectively, also can carry out the research of full cell reaction.
2) The utility model discloses the setting of electrolytic cell's negative pole sample connection is outside, utilizes the peristaltic pump respectively negative and positive pole circulation reaction liquid, and the sample of being convenient for can the sample operation at any time when the reaction needs take out the result, can realize the quick even diffusion and the timely concentration detection of result.
3) The gas flow groove ventilating device of the electrolytic cell can realize the rapid and uniform diffusion of reactant (oxygen) to participate in the reaction, and the redundant oxygen enters the catholyte again through the gas outlet to participate in the reaction; the addition of the hydrophobic layer enables the gas phase and the liquid phase to fully react on the premise of ensuring no leakage of the reaction.
4) The utility model discloses a plurality of cutting ferrule of electrolytic cell design, pagoda joint, air duct and silica gel creep pipe in addition are favorable to the fixed of working electrode and counter electrode, and gaseous and the even quick lets in of liquid gas to be favorable to the high-efficient emergence steadily of electro-catalytic reaction.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
in the figure: 1-an anode flow cell; 2-a cathode flow cell; 3-a gas flow cell; 4-a proton exchange membrane; 5-stainless steel end plates; 6-hydrophobic carbon paper; 7-a silica gel hose; 8-a gas-guide tube; 9-cathode reservoir; 10-an anode liquid storage tank; 11-a cathode electrode; 12-an anode electrode; 13-PTEE sealing plate.
Detailed Description
The present invention will be further described with reference to the drawings attached to the specification, but the scope of the present invention is not limited thereto, and the terms "left" and "right" in the present invention only represent positions in the drawings, and do not represent absolute positions.
As shown in fig. 1, a high-efficiency electrocatalytic hydrogen peroxide production reaction electrolytic cell comprises an anode flow tank 1, a cathode flow tank 2, a gas flow tank 3, a proton exchange membrane 4, two stainless steel end plates 5, hydrophobic carbon paper 6, two silica gel hoses 7, a gas guide tube 8, a cathode reservoir 9, an anode reservoir 10, a cathode electrode 11, an anode electrode 12 and a PTEE material sealing plate, wherein the anode flow tank 1 and the cathode flow tank 2 are of a hollow structure with a middle part, liquid inlets or liquid outlets are formed in two sides of the edge part of the anode flow tank 1 and the cathode flow tank 2, the liquid inlets and the liquid outlets are respectively connected with the silica gel hoses 7 through pagoda joints, and the anode flow tank 1 and the cathode flow tank 2 are respectively connected with the anode reservoir 10 and the cathode reservoir 9 through one silica gel hose 7 to form a circulation loop; a proton exchange membrane 4 is arranged between the anode flow groove 1 and the cathode flow groove 2, the area of the proton exchange membrane 4 is larger than the hollow area of the anode flow groove 1 and the cathode flow groove 2, a gasket is arranged between the proton exchange membrane 4 and the anode flow groove 1 and the cathode flow groove 2, the left side of the cathode flow groove 2 is sequentially connected with a cathode electrode 11, a hydrophobic carbon paper 6, a gas flow groove 3 and a stainless steel end plate 5, gaskets are arranged between all the parts, the middle part of the gas flow groove 3 is provided with a semi-hollow groove, the edge part is provided with a gas inlet and a gas outlet, the gas inlet and the gas outlet are respectively connected with a gas guide tube 8 through a clamping sleeve, the area of the hydrophobic carbon paper 6 is larger than the hollow area of the gas flow groove 3, the area of the cathode electrode 11 is larger than the hollow area of the cathode flow groove 2, the right side of the anode flow groove 1 is provided with an anode electrode 2, and the area size of the anode flow groove 1 is larger than the hollow area of the anode flow groove, a gasket is arranged between the anode electrode 2 and the anode flow tank 1, and a PTEE material sealing plate 13 and a stainless steel end plate 5 are sequentially trained on the right side of the anode electrode 12; four screws respectively penetrate through the stainless steel end plate 5 of the cathode, the gas flowing groove 3, the hydrophobic carbon paper 6, the cathode electrode 11, the cathode flowing groove 2, the proton exchange membrane 4, the anode flowing groove 1, the anode electrode 11, the PTEE material sealing plate 13 and the peripheral corners of the stainless steel end plate 5 of the anode in sequence to realize fixed and integrated connection.
Adding equal volume of electrolyte solution KOH solution into a cathode liquid storage tank 10 and an anode liquid storage tank 9, introducing oxygen into a gas guide tube 8, introducing oxygen for 30min before an electrochemical test is started to reach oxygen saturation, continuously introducing oxygen into a gas flow tank 3 in the electrochemical test process to supplement the oxygen consumed by the reaction, uniformly and compactly introducing oxygen by adopting a gas inlet mode of a diffusion layer of hydrophobic carbon paper 6, basically discharging physical interference of oxygen flow on the surface of an electrode because an oxygen outlet is far away from an electrode interface, connecting each electrode with a positive electrode and a negative electrode of a power supply in the test process, semi-blocking the air outlet in the test process, enabling reactant oxygen to diffuse into a cathode reaction area through the hydrophobic carbon paper 6 more, and taking a little product out of the cathode liquid storage tank 9 and detecting the concentration of the product in real time and calculating the yield when the concentration of the product needs to be analyzed, the electrolysis equation for this example is: cathode: o is2+H2O+2e-→HO2-+OH-(ii) a Anode: 4OH- -4e- - → 2H2O+O2。
Claims (10)
1. The high-efficiency electrocatalytic hydrogen peroxide production reaction electrolytic tank is characterized by comprising an anode and a cathode, wherein the cathode is connected with the anode through a proton exchange membrane (4), the anode comprises an anode flow tank (1), an anode electrode (12), a PTEE material sealing plate (13), a stainless steel end plate (5), a silica gel hose (7) and an anode reservoir (10), the anode electrode (12) is arranged between the anode flow tank (1) and the PTEE material sealing plate (13), the stainless steel end plate (5) is arranged on the other side of the PTEE material sealing plate (13), and the anode flow tank (1) is connected with the anode reservoir (10) through the silica gel hose (7) to form a circulation loop; the negative pole includes negative pole flowing tank (2), cathode electrode (11), hydrophobic carbon paper (6), gas flow tank (3), stainless steel end plate (5), silica gel hose (7) and cathode reservoir (9), negative pole flowing tank (2) are connected through silica gel hose (7) and negative pole reservoir (9) and are constituted circulation circuit, cathode electrode (11) are located between negative pole flowing tank (2) and hydrophobic carbon paper (6), one side of gas flow tank (3) is connected to the opposite side of hydrophobic carbon paper (6), stainless steel end plate (5) is connected to the opposite side of gas flow tank (3).
2. The high-efficiency electrocatalytic hydrogen peroxide production reaction electrolytic cell as claimed in claim 1, wherein the anode flow cell (1) and the cathode flow cell (2) are of a fully hollow structure in the middle, and the edge portions thereof are respectively provided with a liquid inlet and a liquid outlet which are respectively connected with the silica gel hose (7).
3. The high-efficiency electrocatalytic hydrogen peroxide production reaction electrolytic cell as set forth in claim 1, wherein said proton exchange membrane (4) is disposed between said anode flow cell (1) and said cathode flow cell (2).
4. The high-efficiency electrocatalytic hydrogen peroxide production reaction electrolytic cell as claimed in claim 1, wherein the middle part of the gas flowing groove (3) is a semi-hollow groove, one closed side is connected with a stainless steel end plate (5), and the edge part of the gas flowing groove (3) is respectively provided with a gas inlet and a gas outlet which are respectively connected with a gas guide tube (8).
5. The high-efficiency electrocatalytic hydrogen peroxide production reaction electrolytic cell as claimed in claim 1, wherein screws sequentially penetrate through a stainless steel end plate (5) of a cathode, a gas flowing tank (3), hydrophobic carbon paper (6), a cathode electrode (11), a cathode flowing tank (2), a proton exchange membrane (4), an anode flowing tank (1), an anode electrode (12), a PTEE material sealing plate (13) and the stainless steel end plate (5) of the anode to realize fixed and integrated connection.
6. The high-efficiency electrocatalytic hydrogen peroxide production reaction electrolytic cell as claimed in claim 5, wherein a gasket is padded between the hydrophobic carbon paper (6) and the cathode electrode (11).
7. The high-efficiency electrocatalytic hydrogen peroxide production reaction electrolytic cell as claimed in claim 5, wherein gaskets are respectively filled between the hydrophobic carbon paper (6) and the gas flowing tank (3), between the cathode electrode (11) and the cathode flowing tank (2), between the proton exchange membrane (4) and the cathode flowing tank (2) and the anode flowing tank (1), and between the anode flowing tank (1) and the anode electrode (12).
8. The high-efficiency electrocatalytic hydrogen peroxide production reaction electrolytic cell as claimed in claim 2, wherein the liquid inlet and the liquid outlet are respectively connected with the silica gel hose (7) in a sealing manner through pagoda joints.
9. The high-efficiency electrocatalytic hydrogen peroxide production reaction electrolytic cell as set forth in claim 4, wherein the air inlet and the air outlet are hermetically connected with the air duct (8) through ferrule fittings, respectively.
10. The high-efficiency electrocatalytic hydrogen peroxide production reaction electrolytic cell as claimed in claim 1, wherein the silica gel hose (7) is connected with a peristaltic pump, and liquid circulation is realized through the peristaltic pump.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120892544.9U CN215163204U (en) | 2021-04-28 | 2021-04-28 | High-efficiency electrolytic cell for electrocatalytic hydrogen peroxide production reaction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114059089A (en) * | 2021-12-29 | 2022-02-18 | 浙江工业大学 | Difunctional electrolytic reaction device |
| CN115094446A (en) * | 2022-05-10 | 2022-09-23 | 昆明理工大学 | Portable hydrogen peroxide reactor based on bifunctional catalyst and preparation method thereof |
-
2021
- 2021-04-28 CN CN202120892544.9U patent/CN215163204U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114059089A (en) * | 2021-12-29 | 2022-02-18 | 浙江工业大学 | Difunctional electrolytic reaction device |
| CN114059089B (en) * | 2021-12-29 | 2023-01-10 | 浙江工业大学 | Difunctional electrolytic reaction device |
| CN115094446A (en) * | 2022-05-10 | 2022-09-23 | 昆明理工大学 | Portable hydrogen peroxide reactor based on bifunctional catalyst and preparation method thereof |
| CN115094446B (en) * | 2022-05-10 | 2023-08-11 | 昆明理工大学 | Portable hydrogen peroxide reactor based on bifunctional catalyst and preparation method thereof |
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