CN111663148A - Method for preventing elemental sulfur from adhering to electrode surface in process of electrocatalytic reduction of sulfur dioxide - Google Patents
Method for preventing elemental sulfur from adhering to electrode surface in process of electrocatalytic reduction of sulfur dioxide Download PDFInfo
- Publication number
- CN111663148A CN111663148A CN202010528603.4A CN202010528603A CN111663148A CN 111663148 A CN111663148 A CN 111663148A CN 202010528603 A CN202010528603 A CN 202010528603A CN 111663148 A CN111663148 A CN 111663148A
- Authority
- CN
- China
- Prior art keywords
- electrode
- sulfur dioxide
- sulfur
- electrocatalytic reduction
- adhering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention discloses a method for preventing elemental sulfur from adhering to the surface of an electrode in the process of electrocatalytic reduction of sulfur dioxide. The electro-catalytic reduction process adopts a three-electrode system, the cathode chamber and the anode chamber of the three-electrode system are separated by adopting a proton membrane, the electrolyte in the cathode chamber is sulfur dioxide absorption liquid added with a surfactant, and the electrolyte in the anode chamber is Na2SO4/H2SO4The method mainly solves the problem that elemental sulfur precipitated in the sulfur dioxide electrocatalytic reduction process adheres to the surface of an electrode by adding a surfactant. The method not only can efficiently carry out electrocatalysis reduction on sulfur dioxide to generate elemental sulfur, but also can effectively prevent the elemental sulfur from poisoning the surface of the electrode,and the method has short flow, simple operation and no secondary pollution, and is beneficial to industrial application.
Description
Technical Field
The invention relates to a method for synthesizing elemental sulfur by electrocatalytic reduction of sulfur dioxide, in particular to a method for preventing the elemental sulfur generated in the process of electrocatalytic reduction of sulfur dioxide from adhering to the surface of an electrode by using a surfactant, belonging to the technical field of recycling useful resources from nonferrous smelting flue gas.
Background
Based on the concepts of environmental protection and resource recycling, the current research on air pollution gradually focuses on the direction of how to utilize pollutants as resources. For the resource utilization of sulfur dioxide pollution gas, the sulfuric acid is prepared by oxidation or the sulfur is prepared by reduction. With the increase of the demand of sulfur in China, the technology of simply and effectively converting sulfur dioxide into elemental sulfur is continuously concerned and developed. The electrocatalytic reduction of sulfur dioxide to elemental sulfur has mild reaction conditions, low energy consumption,The method is simple to operate and has a good application prospect, but the electro-reduction catalyst related in the prior art generally has the problem of low catalytic reduction efficiency, and in the process of generating elemental sulfur by cathode reduction of electro-catalytic reduction sulfur dioxide, the effective area of an electrode is reduced due to easy adhesion of sulfur per se and electrode materials, and the electrolytic efficiency is greatly reduced after long-time continuous electrolysis, which is to realize the purpose of realizing high-concentration SO in non-ferrous smelting flue gas at present2The technical problem to be solved is urgently needed in the electrocatalytic reduction process.
Disclosure of Invention
Aiming at the defects that the existing method for converting sulfur dioxide into elemental sulfur through electrocatalysis has low catalytic efficiency, the elemental sulfur is adhered to the surface of an electrode to poison the electrode and the like, the invention aims to provide the method for preparing the elemental sulfur poisoning electroreduction catalyst, which has high electrocatalysis reduction efficiency on sulfur dioxide, can effectively prevent the elemental sulfur generated by reduction from being adhered to the poisoning electroreduction catalyst, can be implemented at normal temperature and normal pressure, is simple to operate, can greatly reduce energy consumption, and is favorable for popularization and application.
In order to achieve the technical purpose, the invention provides a method for preventing elemental sulfur from adhering to the surface of an electrode in the process of electrocatalytic reduction of sulfur dioxide, wherein a three-electrode system is adopted in the electrocatalytic reduction process, a cathode chamber and an anode chamber of the three-electrode system are separated by adopting a proton membrane (DuPont N117), electrolyte in the cathode chamber is sulfur dioxide absorption liquid added with a surfactant, and electrolyte in an anode chamber is Na2SO4/H2SO4In the mixed solution, a metal electrode (lead, copper, titanium and the like) is used as a working electrode, Pt is used as a counter electrode, a Saturated Calomel Electrode (SCE) is used as a reference electrode, and elemental sulfur particles are separated out from electrolyte in a cathode chamber after electrocatalytic reduction. The reduction voltage is controlled to be-0.6V to-1.2V.
In a preferred embodiment, the surfactant is at least one of isopropyl alcohol, sodium dodecyl benzene sulfonate and polyvinylpyrrolidone. By adopting the preferable surfactant, the adhesion of elemental sulfur generated by sulfur dioxide electrocatalysis reduction on the surface of an electrocatalysis reduction electrode can be reduced, so that the poisoning effect of the elemental sulfur on the electrode is obviously weakened.
In a preferable scheme, the addition concentration of the surfactant in the sulfur dioxide absorption liquid is 0.1-5 g/L.
In a preferred scheme, the sulfur dioxide absorption liquid is sulfur dioxide water absorption liquid or sulfur dioxide alkaline absorption liquid. The water absorption liquid of sulfur dioxide is mainly H2SO3Solutions, sulfur dioxide alkaline absorption solutions such as ammonia sulfite solution, potassium sulfite solution, sodium sulfite solution, etc., which are all suitable for the technical solution of the present invention.
Preferably, the metal electrode is a lead electrode, a copper electrode or a titanium electrode. The electrocatalytic reduction efficiency of sulfur dioxide can be obviously improved by selecting a proper metal electrode as an electrocatalytic reduction catalyst. Particularly, when a lead electrode is used as an electrocatalytic reduction catalyst, the electrocatalytic reduction efficiency of sulfur dioxide is far superior to that of a copper electrode and a titanium electrode.
Preferably, the pH value of the sulfur dioxide absorption liquid is controlled to be less than 2 in the electrocatalytic reduction process. The control of the acidic environment with a pH of less than 2 is beneficial to the implementation of the electrocatalytic reduction process of sulfur dioxide, which is difficult to implement if the pH is higher than 2, and the pH can be adjusted to less than 2 by means of inorganic acid.
Preferably, the temperature is controlled to be above room temperature during the electrocatalytic reduction process. The electrocatalytic reduction process of the sulfur dioxide can be smoothly carried out at room temperature.
In a preferable scheme, the reduction potential is controlled to be-0.6V to-1.2V (relative to a saturated calomel electrode) in the electrocatalytic reduction process. Elemental sulfur is difficult to obtain in the electrolytic process under the condition that the reduction potential is-0.6V-0V, and the hydrogen evolution reaction in the electrolytic process is serious under the condition that the reduction potential exceeds-1.2V, so that the Faraday efficiency for reducing the elemental sulfur is greatly reduced.
The invention adopts a path of generating elemental sulfur by electrocatalytic reduction of sulfur dioxide: first, sulfur dioxide forms thiosulfate (S) during the reaction2O3 2-)，S4O6 2-Is SO2And thiosulfate radical (eq.1), secondly, S4O6 2-Can pass through S2O3 2-(eq.3) and S is presumed to be formed by a combination of the two reaction paths2O3 2-Is S4O6 2-A precursor of (a); since thiosulfate and tetrathionate are easily converted into elemental sulfur at low pH, the reaction path in this system is presumed to be as shown in equations 4 and 5. S2O3 2-And S4O6 2-Is an intermediate product of the reaction, and the lead (copper, titanium and the like) electrode mainly acts on the formation process of the intermediate product to accelerate the transfer of electrons.
4SO2+3H2O→2SO4 2-+S2O3 2-+6H+(1)
2SO2+S2O3 2-+2H++2e→S4O6 2-+H2O (2)
2S2O3 2-→S4O6 2-+2e (3)
S4O6 2-+H+→S+SO2+H2O+SO4 2-(4)
S2O3 2-+H+→S+SO2+H2O+SO4 2-(5)
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
1) according to the technical scheme, the metal electrode (lead, copper, titanium and the like) has high activity on electrocatalytic reduction of sulfur dioxide or sulfite ions to generate elemental sulfur, so that sulfur resources in high-concentration sulfur dioxide gas in non-ferrous smelting flue gas can be effectively recovered and converted into elemental sulfur with high value, the problem of environmental pollution is solved, and economic value is also generated;
2) the technical scheme of the invention reduces the adhesion of elemental sulfur generated by electrocatalytic reduction of sulfur dioxide on the surface of the electrode by using the surfactant, so as to solve the technical problem that the elemental sulfur adheres on the surface of the electrode to poison the electrode.
3) The technical scheme of the invention can realize the conversion of the sulfur dioxide absorption liquid at room temperature and normal pressure, has mild reaction conditions and low energy consumption, and is beneficial to industrial application.
4) The technical scheme of the invention adopts an electrocatalytic reduction mode, and has the characteristic of high reaction efficiency.
Drawings
FIG. 1 shows a comparison of the effects of different surfactant additions on the i-t curve.
FIG. 2 is an SEM image of the surface of the electrode before and after the addition of the surfactant.
FIG. 3 is a comparison of the effect of adding different concentrations of surfactant on the i-t curve.
FIG. 4 shows the current density and hydrogen evolution potential of different electrodes at lower overpotentials.
Detailed Description
The following examples are intended to further illustrate the present invention, but not to limit the scope of the claims.
The sulfur dioxide absorption solution in the following examples was electrocatalytic reduced using a three-electrode system. The cathode chamber and the anode chamber of the three-electrode system are separated by a DuPont N117 proton membrane, the electrolyte in the cathode chamber is sulfur dioxide absorption liquid, and the electrolyte in the anode chamber is Na2SO4/H2SO4The solution was mixed, the metal sheet as the working electrode, Pt as the counter electrode and SCE as the reference electrode.
The following examples are not specifically illustrated, and the chemical reagents used are all conventional commercial products, and are analytical reagents.
Example 1
Analytically pure sodium sulfite, no surfactant.
50mL of water and sodium sulfite (0.08mol/L) in a certain ratio are uniformly mixed and taken out to a cathode chamber to be used as a catholyte, 50mL of anhydrous sodium sulfate aqueous solution is used as an anolyte, a lead sheet is used as a working electrode, Pt is used as a counter electrode, and SCE is used as a reference electrode. And carrying out electrochemical performance test. In the process, an electrolytic potential of-0.8V is selected, the electrolytic capacity is controlled to be the same (400C), the concentration of sulfite is 0.08mol/L, the pH value of a cathode and anode electrolytic chamber is adjusted to 0.5 by adopting sulfuric acid, the stirring speed is 1000rmp, and a current density-time curve (i-t curve) is tested. The slope of the i-t curve is 0.09.
Example 2
50mL of water, sodium sulfite (0.08mol/L) and 5% isopropanol solution (0.01mol/L) in a certain ratio are uniformly mixed and taken out to a cathode chamber to be used as catholyte, 50mL of anhydrous sodium sulfate aqueous solution is used as anolyte, a lead sheet is used as a working electrode, Pt is used as a counter electrode, and SCE is used as a reference electrode, and electrochemical performance test is carried out. In the process, an electrolytic potential of-0.8V is selected, the electrolytic capacity is controlled to be the same (400C), the concentration of sulfite is 0.08mol/L, the pH value of a cathode and anode electrolytic chamber is adjusted to 0.5 by adopting sulfuric acid, the stirring speed is 1000rmp, and a current density-time curve (i-t curve) is tested. The slope of the i-t curve can be reduced from 0.09 to 0.06.
Example 3
50mL of water, sodium sulfite (0.08mol/L) and 0.3g/L of polyvinylpyrrolidone (PVP) in a certain ratio are uniformly mixed and taken out to a cathode chamber to be used as catholyte, 50mL of anhydrous sodium sulfate aqueous solution is used as anolyte, a lead sheet is used as a working electrode, Pt is used as a counter electrode, and SCE is used as a reference electrode, and electrochemical performance test is carried out. In the process, an electrolytic potential of-0.8V is selected, the electrolytic capacity is controlled to be the same (400C), the concentration of sulfite is 0.08mol/L, the pH value of a cathode and anode electrolytic chamber is adjusted to 0.5 by adopting sulfuric acid, the stirring speed is 1000rmp, and a current density-time curve (i-t curve) is tested. The slope of the i-t curve can be reduced from 0.09 to 0.05.
Example 4
Analytically pure sodium sulfite, and 0.01mol/L Sodium Dodecyl Benzene Sulfonate (SDBS) is selected as the surfactant.
50mL of water, sodium sulfite (0.08mol/L) and 0.01mol/L Sodium Dodecyl Benzene Sulfonate (SDBS) in a certain ratio are uniformly mixed and taken out to a cathode chamber to be used as catholyte, 50mL of anhydrous sodium sulfate aqueous solution is used as anolyte, a lead sheet is used as a working electrode, Pt is used as a counter electrode, and SCE is used as a reference electrode, so that the electrochemical performance test is carried out. In the process, an electrolytic potential of-0.8V is selected, the electrolytic capacity is controlled to be the same (400C), the concentration of sulfite is 0.08mol/L, the pH value of a cathode and anode electrolytic chamber is adjusted to 0.5 by adopting sulfuric acid, the stirring speed is 1000rmp, and a current density-time curve (i-t curve) is tested. The slope of the i-t curve can be reduced from 0.09 to 0.03.
Example 5
Analytically pure sodium sulfite, and four Sodium Dodecyl Benzene Sulfonate (SDBS) with different concentrations are selected as the surfactant.
50mL of water, sodium sulfite (0.08mol/L) and Sodium Dodecyl Benzene Sulfonate (SDBS) (0.01mol/L, 0.0075mol/L, 0.005mol/L and 0.0025mol/L) in a certain proportion are uniformly mixed and taken out to a cathode chamber to be used as a cathode electrolyte, 50mL of anhydrous sodium sulfate aqueous solution is used as an anode electrolyte, a lead sheet is used as a working electrode, Pt is used as a counter electrode, and SCE is used as a reference electrode, and electrochemical performance test is carried out. In the process, an electrolytic potential of-0.8V is selected, the electrolytic capacity is controlled to be the same (400C), the concentration of sulfite is 0.08mol/L, the pH value of a cathode and anode electrolytic chamber is adjusted to 0.5 by adopting sulfuric acid, the stirring speed is 1000rmp, and a current density-time curve (i-t curve) is tested. After linear fitting, the slopes are respectively 0.0056, 0.0053, 0.0055 and 0.0056, and the difference between the slopes is small, which shows that the influence of the concentrations of the SDBS on the current attenuation condition is not large in a certain time, that is, the SDBS with small concentration has a good inhibition effect on the adhesion of sulfur on the surface of the electrode, so in the subsequent experiments, the addition amount of the SDBS is controlled to be 0.0025 mol/L.
Example 6
Analytically pure sodium sulfite, the reduction voltage is-0.8V, the pH value is 0.25, and 0.01mol/L Sodium Dodecyl Benzene Sulfonate (SDBS) is selected as a surfactant.
50mL of water, sodium sulfite (0.08mol/L) and a surfactant (0.01mol/L sodium dodecyl benzene sulfonate) in a certain ratio are uniformly mixed and taken out to a cathode chamber to serve as catholyte, 50mL of an anhydrous sodium sulfate aqueous solution serves as anolyte, a lead sheet serves as a working electrode, Pt serves as a counter electrode, SCE serves as a reference electrode, sulfuric acid is used for adjusting the pH value of the cathode and anode electrolytic chamber to be 0.25, the electrodes are fixed, and a sealing cover is screwed down. Reducing voltage is minus 0.8V, water at normal temperature is circularly cooled, electrolysis is stopped after 30min, and elemental sulfur is generated. Electrolyzing to obtain milky white or milky yellow suspension. And transferring the suspension to a beaker, and carrying out constant-temperature water bath at 70-80 ℃. After a period of time, the small solid particles in the solution agglomerate and the solution becomes clear. And then, carrying out suction filtration on the solution to obtain a solid product, and drying the solid product at 60 ℃ to constant weight, wherein the Faraday efficiency is 83.5%.
Example 7
Comparison of electrocatalytic properties and electrocatalytic selectivity properties of different electrodes. Mainly comparing the current density and hydrogen evolution potential of different electrodes at lower overpotentials. In the electrolysis experiment, lead, titanium and copper are respectively used as cathodes, and the electrolyte in a cathode chamber is 0.08mol/L Na2SO3And 0.5mol/L H2SO4The mixed solution is 0.08mol/L Na electrolyte in an anode chamber2SO4And 0.5mol/L H2SO4The solution was mixed, the pH of the two electrolysis chambers was adjusted to 0.5, and the solution was subjected to linear voltammetry, the results of which are shown in fig. 4. The initial potentials of lead and titanium electrolysis are not obviously different and are about-0.4V (relative to SCE), and the reduction peak current in a Pb electrode system is obviously enhanced compared with that of titanium and glassy carbon electrodes at a more negative potential, so that Pb has better catalytic performance. Cu shows a smaller initial reduction potential, but at low potentials the hydrogen evolution reaction of Cu is equally vigorous and SO2The catalytic reduction reaction potential window on the surface of the copper electrode is narrow (-0.5 to-0.75V vs. SCE), the hydrogen evolution potential of the Pb electrode is obviously higher than that of Ti, Cu and the like, and SO is added2The reduction potential window is wider, and the inhibition of the hydrogen evolution reaction and the SO are favorably realized by controlling the potential2The reduction efficiency is improved, and the reduction efficiency is better SO2The catalytic cathode material is electro-reduced.
Claims (8)
1. A method for preventing elemental sulfur from adhering to the surface of an electrode in the process of electrocatalytic reduction of sulfur dioxide is characterized by comprising the following steps: the electrocatalytic reduction process adopts a three-electrode system, a cathode chamber and an anode chamber of the three-electrode system are separated by adopting a proton membrane, the electrolyte in the cathode chamber is sulfur dioxide absorption liquid added with a surfactant, and the electrolyte in the anode chamber is Na2SO4/H2SO4Mixing the solution, using a metal electrode as a working electrode,pt is used as a counter electrode, a saturated calomel electrode is used as a reference electrode, and elemental sulfur particles are separated out from electrolyte in a cathode chamber after electrocatalytic reduction.
2. The method of claim 1, wherein the step of preventing elemental sulfur from adhering to the surface of the electrode during the electrocatalytic reduction of sulfur dioxide comprises: the surfactant is at least one of isopropanol, sodium dodecyl benzene sulfonate and polyvinylpyrrolidone.
3. A method for preventing elemental sulphur from adhering to an electrode surface during electrocatalytic reduction of sulphur dioxide as claimed in claim 1 or 2, wherein: the addition concentration of the surfactant in the sulfur dioxide absorption liquid is 0.1-5 g/L.
4. The method of claim 1, wherein the step of preventing elemental sulfur from adhering to the surface of the electrode during the electrocatalytic reduction of sulfur dioxide comprises: the sulfur dioxide absorption liquid is sulfur dioxide water absorption liquid or sulfur dioxide alkaline absorption liquid.
5. The method of claim 1, wherein the step of preventing elemental sulfur from adhering to the surface of the electrode during the electrocatalytic reduction of sulfur dioxide comprises: the metal electrode is a lead electrode, a copper electrode or a titanium electrode.
6. The method of claim 1, wherein the step of preventing elemental sulfur from adhering to the surface of the electrode during the electrocatalytic reduction of sulfur dioxide comprises: and controlling the pH value of the sulfur dioxide absorption liquid to be less than 2 in the electrocatalytic reduction process.
7. The method of claim 1, wherein the step of preventing elemental sulfur from adhering to the surface of the electrode during the electrocatalytic reduction of sulfur dioxide comprises: the temperature is controlled to be above room temperature in the electrocatalytic reduction process.
8. The method of claim 1, wherein the step of preventing elemental sulfur from adhering to the surface of the electrode during the electrocatalytic reduction of sulfur dioxide comprises: the reduction potential is controlled to be-0.6V to-1.2V in the electrocatalytic reduction process, relative to a saturated calomel electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010528603.4A CN111663148B (en) | 2020-06-11 | 2020-06-11 | Method for preventing elemental sulfur from adhering to electrode surface in process of electrocatalytic reduction of sulfur dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010528603.4A CN111663148B (en) | 2020-06-11 | 2020-06-11 | Method for preventing elemental sulfur from adhering to electrode surface in process of electrocatalytic reduction of sulfur dioxide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111663148A true CN111663148A (en) | 2020-09-15 |
| CN111663148B CN111663148B (en) | 2021-06-25 |
Family
ID=72387287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010528603.4A Active CN111663148B (en) | 2020-06-11 | 2020-06-11 | Method for preventing elemental sulfur from adhering to electrode surface in process of electrocatalytic reduction of sulfur dioxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111663148B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112981445A (en) * | 2021-02-04 | 2021-06-18 | 中南大学 | Oxidation-reduction lead electrocatalytic material, preparation method thereof and application thereof in electrocatalytic reduction of sulfur dioxide |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1762590A (en) * | 2004-10-21 | 2006-04-26 | 北京大学 | Transition metal-gamma-Fe2o3 nano material, its preparation method and application |
| CN102509803A (en) * | 2011-11-04 | 2012-06-20 | 中山大学 | Preparation method of carbon-coated sulfur anode material of lithium sulfur secondary battery |
| EP2704239A1 (en) * | 2012-08-29 | 2014-03-05 | SolviCore GmbH & Co KG | Colloidal dispersions comprising precious metal particles and acidic ionomer components and methods of their manufacture and use |
| CN106075438A (en) * | 2016-06-17 | 2016-11-09 | 上海理工大学 | A kind of extra small MoS2nanometer sheet and its preparation method and application |
| CN107720707A (en) * | 2017-11-06 | 2018-02-23 | 中南大学 | A kind of method of sulfur dioxide absorbing liquid Photocatalysis disproportionation recovery elemental sulfur |
| KR20180036868A (en) * | 2016-09-30 | 2018-04-10 | 전자부품연구원 | Porous carbon cathode and lithium-sulfur dioxide secondary battery containing the same |
| CN109395712A (en) * | 2018-12-07 | 2019-03-01 | 昆明冶金研究院 | A kind of aluminum-based catalyst agent carrier and preparation method thereof |
| CN109434130A (en) * | 2018-12-07 | 2019-03-08 | 五邑大学 | A kind of preparation method of spherical nano silver powder |
| CN109819979A (en) * | 2019-03-15 | 2019-05-31 | 尚蒙科技无锡有限公司 | Nano silver copper bimetallic colloid/liquid of high anti-microbial property and preparation method thereof |
-
2020
- 2020-06-11 CN CN202010528603.4A patent/CN111663148B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1762590A (en) * | 2004-10-21 | 2006-04-26 | 北京大学 | Transition metal-gamma-Fe2o3 nano material, its preparation method and application |
| CN102509803A (en) * | 2011-11-04 | 2012-06-20 | 中山大学 | Preparation method of carbon-coated sulfur anode material of lithium sulfur secondary battery |
| EP2704239A1 (en) * | 2012-08-29 | 2014-03-05 | SolviCore GmbH & Co KG | Colloidal dispersions comprising precious metal particles and acidic ionomer components and methods of their manufacture and use |
| CN106075438A (en) * | 2016-06-17 | 2016-11-09 | 上海理工大学 | A kind of extra small MoS2nanometer sheet and its preparation method and application |
| KR20180036868A (en) * | 2016-09-30 | 2018-04-10 | 전자부품연구원 | Porous carbon cathode and lithium-sulfur dioxide secondary battery containing the same |
| CN107720707A (en) * | 2017-11-06 | 2018-02-23 | 中南大学 | A kind of method of sulfur dioxide absorbing liquid Photocatalysis disproportionation recovery elemental sulfur |
| CN109395712A (en) * | 2018-12-07 | 2019-03-01 | 昆明冶金研究院 | A kind of aluminum-based catalyst agent carrier and preparation method thereof |
| CN109434130A (en) * | 2018-12-07 | 2019-03-08 | 五邑大学 | A kind of preparation method of spherical nano silver powder |
| CN109819979A (en) * | 2019-03-15 | 2019-05-31 | 尚蒙科技无锡有限公司 | Nano silver copper bimetallic colloid/liquid of high anti-microbial property and preparation method thereof |
Non-Patent Citations (6)
| Title |
|---|
| FORNES, J. P.等: ""Cathode depassivation using ultrasound for the production of colloidal sulphur by reduction of sulphur dioxide"", 《ELECTROCHIMICA ACTA》 * |
| FORNES, J. P.等: ""Production of colloidal sulphur from reduction of sulphur dioxide by contact deposition with 304 stainless steel"", 《ELECTROCHIMICA ACTA》 * |
| FORNES, JP等: ""Electrochemical conversion of sulfur dioxide with a rotating cylinder electrode working as anode or cathode"", 《JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY》 * |
| 张正阳 等: ""二氧化硫膜电解制备硫磺机理与应用研究"", 《有色金属(冶炼部分)》 * |
| 张正阳 等: ""电化学方法处理二氧化硫研究进展"", 《有色金属(冶炼部分)》 * |
| 杨本涛 等: ""二氧化硫还原回收单质硫技术研究及进展 "", 《硫酸工业》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112981445A (en) * | 2021-02-04 | 2021-06-18 | 中南大学 | Oxidation-reduction lead electrocatalytic material, preparation method thereof and application thereof in electrocatalytic reduction of sulfur dioxide |
| CN112981445B (en) * | 2021-02-04 | 2022-04-08 | 中南大学 | Oxidation-reduction lead electrocatalytic material, preparation method thereof and application thereof in electrocatalytic reduction of sulfur dioxide |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111663148B (en) | 2021-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113373477A (en) | Method and system for controlling electrolyte flow and pressure of dynamic hydrogen production electrolytic cell | |
| CN113737205B (en) | Method for directly preparing ammonia gas by electrochemical reduction of nitrite | |
| CN111663148B (en) | Method for preventing elemental sulfur from adhering to electrode surface in process of electrocatalytic reduction of sulfur dioxide | |
| Wen et al. | Preliminary study on zinc–air battery using zinc regeneration electrolysis with propanol oxidation as a counter electrode reaction | |
| Liu et al. | A High-Performance Continuous-Flow MEA Reactor for Electroreduction CO 2 to Formate | |
| CN113122864B (en) | Method for preparing hydrogen sulfide by electrochemical reduction of sulfur dioxide | |
| CN111593363B (en) | Method for recovering elemental sulfur by electrocatalytic reduction of sulfur dioxide through lead electrode | |
| CN110791773A (en) | Method and device for producing hydrogen by electrolyzing water | |
| Foller et al. | The Electrochemical Ceneration Of High Concentration Ozone For Small-Scale Applications | |
| CA1163957A (en) | Energy efficient electrolyzer for the production of hydrogen | |
| Chaenko et al. | Indirect electrochemical oxidation of aliphatic alcohols to carboxylic acids by active oxygen forms in aqueous media | |
| CN101864577B (en) | Method for electrochemically preparing peroxysulfuric acid | |
| CN110605003B (en) | Recycling method of fly ash washing waste gas absorption liquid | |
| Enache et al. | Anodic Oxidation of Sulphite in Alkaline Solutions on Skeletal Nickel Electrode. I. Voltammetric Studies | |
| CN205367823U (en) | Fenton method combines high salt industrial waste water electrolysis trough of bipolar membrane technical process | |
| US5643437A (en) | Co-generation of ammonium persulfate anodically and alkaline hydrogen peroxide cathodically with cathode products ratio control | |
| CN111094176B (en) | Process for converting hydrosulfide into elemental sulfur | |
| CA1289509C (en) | Energy-saving type zinc electrolysis method | |
| CN112981445B (en) | Oxidation-reduction lead electrocatalytic material, preparation method thereof and application thereof in electrocatalytic reduction of sulfur dioxide | |
| CN110093621B (en) | Hydrogen-free continuous electrochemical oxidation IO3-Transformation to IO4-Method (2) | |
| CN112725816B (en) | Method and device for preparing hydrogen sulfide by sulfur dioxide electrocatalytic reduction in cooperation with membrane separation | |
| CN217983425U (en) | A pile structure for high-efficient electro-catalysis production neutral hydrogen peroxide solution | |
| CN112133990B (en) | Metal-air battery based on Fe (II)/Fe (III) chemical oxidation and electrochemical reduction | |
| JP3304481B2 (en) | Electrolyzer for hydrogen peroxide production and method for electrolytic production of hydrogen peroxide | |
| CN115874200A (en) | Preparation method and application of porous copper mesh loaded gallium oxide-based liquid metal modified electrode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |