WO2023128244A1 - Système électrochimique à base organique servant à éliminer l'ammoniac non réagi - Google Patents

Système électrochimique à base organique servant à éliminer l'ammoniac non réagi Download PDF

Info

Publication number
WO2023128244A1
WO2023128244A1 PCT/KR2022/017519 KR2022017519W WO2023128244A1 WO 2023128244 A1 WO2023128244 A1 WO 2023128244A1 KR 2022017519 W KR2022017519 W KR 2022017519W WO 2023128244 A1 WO2023128244 A1 WO 2023128244A1
Authority
WO
WIPO (PCT)
Prior art keywords
ammonium
organic
electrochemical system
unreacted ammonia
removing unreacted
Prior art date
Application number
PCT/KR2022/017519
Other languages
English (en)
Korean (ko)
Inventor
김용태
신해용
정상문
Original Assignee
포항공과대학교 산학협력단
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 포항공과대학교 산학협력단 filed Critical 포항공과대학교 산학협력단
Publication of WO2023128244A1 publication Critical patent/WO2023128244A1/fr

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
    • B01D53/326—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00 in electrochemical cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
    • H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
    • H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
    • H01M8/0681—Reactant purification by the use of electrochemical cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/406—Ammonia
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Definitions

  • the present invention relates to an organic-based electrochemical system for removing unreacted ammonia. More specifically, the present invention lowers the activation energy required for the ammonia removal reaction during ammonia hydrogen extraction, so that the catalytic reaction proceeds quickly and shows improved activity, and the use of precious metals is reduced due to the interaction between the catalyst and the support, so that the precious metal platinum is about 15 times or more It relates to an organic-based electrochemical system for removing unreacted ammonia that can solve the problems of the conventional PSA method by realizing better economic effects than deposited catalysts.
  • a fuel cell is a device that converts chemical energy generated by oxidation-reduction of fuel into electrical energy.
  • unreacted ammonia generated during hydrogen extraction causes deterioration of the electrode and separator of the fuel cell, and thus an ammonia removal process is additionally required.
  • PSA pressure swing adsorption
  • the working electrode includes a working electrode, a counter electrode, a reference electrode, an electrolyte connecting them and a supporting electrolyte, and the working electrode is a non-noble metal-based catalyst and applied to the surface thereof.
  • the activation energy required for the ammonia removal reaction is lowered, so the catalytic reaction proceeds quickly, resulting in improved activity.
  • the present invention which can solve the problems of the conventional PSA method by implementing the effect, has been completed.
  • An object of the present invention is to provide an organic-based electrochemical system for removing unreacted ammonia that exhibits improved activity by rapidly progressing the catalytic reaction by lowering the activation energy required for the ammonia removal reaction.
  • Another object of the present invention is to reduce the use of precious metals due to the interaction between the catalyst and the support, thereby realizing an economic effect superior to that of a catalyst deposited with about 15 times more precious metal platinum, thereby solving the problems of the conventional PSA method, which was expensive for maintenance and additional costs. It is to provide an organic-based electrochemical system for removing unreacted ammonia.
  • One aspect of the present invention is a working electrode, a counter electrode, a reference electrode, and an electrolyte and a supporting electrolyte connecting the working electrode, the counter electrode, and the reference electrode.
  • the working electrode relates to an organic-based electrochemical system for removing unreacted ammonia including a non-noble metal-based catalyst and platinum applied on the surface of the non-noble metal-based catalyst.
  • the working electrode may include a rotating disk electrode
  • the counter electrode may include a graphite rod
  • the reference electrode may include Ag/AgCl.
  • the electrolyte is 1-methyl-2-pyrrolidone (NMP), acetone, ethanol, n-propanol, n- Butanol (n-butanol), n-hexane, cyclohexanol, acetic acid, ethyl acetate, diethyl ether, dimethylformamide ( dimethyl formamide: DMF), dimethylacetamide: DMAc, dioxane, tetrahydrofuran: THF, dimethyl sulfoxide: DMSO, cyclohexane, benzene, It may include at least one selected from the group consisting of toluene, xylene, water, and derivatives or mixtures thereof.
  • NMP 1-methyl-2-pyrrolidone
  • acetone ethanol
  • n-propanol n-butanol
  • n-butanol n-hexane
  • cyclohexanol cyclohex
  • the supporting electrolyte may include an amide-based or ammonium-based compound.
  • the amide-based compound is melamine (2-amino-4,6-dichlorotriazine), cyanuric chloride, calcium cyanamide, sodium amide, melem (2 ,5,8-triamino-tri-s-triazine), cyanamide, dicyandiamide, and derivatives or mixtures thereof.
  • the ammonium compound is ammonium fluoride (NH 4 F), ammonium fluoborate (NH 4 BF 4 ), ammonium acetate (Ammonium Acetate, CH 3 COONH 4 ), ammonium Ammonium sulfamate (NH 4 SO 3 NH 2 ), Ammonium hexafluorophosphate (NH 4 PF 6 ), Ammonium hexafluoroaluminate ((NH 4 ) 3 AlF 6 ), Ammonium nitrite nitrite, NH 4 NO 2 ), Ammonium perchlorate (NH 4 ClO 4 ), Ammonium Sulfite (NH 4 ) 2 SO 3 ), Ammonium carbonate (NH 4 ) 2 CO 3 , Diammonium molybdate (NH 4 ) 2 MoO 4 ), ammonium phosphate (Ammonium phosphate, (NH 4 ) 2 PO 4 ), ammonium permanganate (NH 4 MnO 4 ), ammonium di Chride (NH
  • the non-noble metal-based catalyst is graphene, carbon black, graphite, acetylene black, Denka black, Catcheon black, activated carbon, mesoporous carbon, carbon nanotube, carbon nanofiber, carbon nanohorn, carbon nanoring , Carbon nanowires and fullerene (C 60 ) It may be supported on any one of the carbon-based support selected from the group consisting of.
  • the non-noble metal-based catalyst is any one or more selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Sn, Mo, W, Rh, Nb and Ru. can include
  • the platinum may be applied on the surface of the non-noble metal-based catalyst in an amount of 1.5 to 2.5 nm.
  • the electrochemical system is a group consisting of voltammetry, amperometry, potentiometry, conductometry, coulometry and electrogravimetry. At least one electrochemical detection signal selected from may be measured.
  • the organic-based electrochemical system for removing unreacted ammonia lowers the activation energy required for the ammonia removal reaction through the organic-based electrochemical system during ammonia hydrogen extraction, so that the catalytic reaction proceeds quickly and exhibits improved activity. It has the advantage of solving the problems of the conventional PSA method, which had high maintenance and additional costs, by realizing superior economic effects than catalysts deposited with about 15 times more precious metal platinum by reducing the use of precious metals due to the interaction between supports.
  • FIG. 1 is a schematic diagram showing the principle of electricity generation in a conventional fuel cell and problems of an aqueous electrochemical system.
  • FIG. 2 is a photograph showing an organic-based electrochemical system for removing unreacted ammonia according to an embodiment of the present invention.
  • FIG. 3 is a cyclic voltammetry graph comparing catalytic activity results according to electrolyte types of an organic-based electrochemical system for removing unreacted ammonia according to an embodiment of the present invention.
  • FIG. 4 is a cyclic voltammetry graph comparing catalytic activity results according to the type of lipoelectrolyte of an organic-based electrochemical system for removing unreacted ammonia according to an embodiment of the present invention.
  • 5 is a cyclic voltammetry graph comparing the activity of noble metal-based substances in an organic-based electrochemical system for removing unreacted ammonia according to an embodiment of the present invention.
  • FIG. 6 is a bar graph comparing non-noble metal-based catalytic activity of an organic-based electrochemical system for removing unreacted ammonia according to an embodiment of the present invention.
  • FIG. 7 is a cyclic voltammetry graph comparing non-noble metal-based catalytic activity of an organic-based electrochemical system for removing unreacted ammonia according to an embodiment of the present invention.
  • each process constituting the method may occur in a different order from the specified order unless a specific order is clearly described in context. That is, each process may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.
  • An electrochemical system for removing unreacted ammonia which is one aspect of the present invention, includes a working electrode, a counter electrode, a reference electrode, and an electrolyte connecting the working electrode, the counter electrode, and the reference electrode. (Electroyte) and a supporting electrolyte (Supporting Electrode), and the working electrode includes a non-noble metal-based catalyst and platinum coated on the surface of the non-noble metal-based catalyst.
  • FIG. 1 is a schematic diagram showing the principle of electricity generation in a conventional fuel cell and problems of an aqueous electrochemical system.
  • a membrane electrode assembly in a fuel cell is a basic unit for generating electricity and is composed of an electrolyte membrane for the movement of hydrogen ions, an anode electrode formed on both sides of the electrolyte membrane, and a cathode electrode.
  • an oxidation reaction of fuel occurs to generate hydrogen ions and electrons
  • the hydrogen ions move to the cathode electrode through an electrolyte membrane
  • oxygen and hydrogen ions transferred through the electrolyte membrane react with electrons to form water is generated, and the movement of electrons occurs in the external circuit by this reaction.
  • FIG. 2 is a photograph showing an organic-based electrochemical system for removing unreacted ammonia according to an embodiment of the present invention.
  • the working electrode is an electrode where an electrochemical reaction of metal ions to be analyzed occurs, and can be analyzed by placing an electrode catalyst on glassy carbon having low electrochemical reactivity.
  • the working electrode includes a non-noble metal-based catalyst and platinum applied on the surface of the non-noble metal-based catalyst, and through this, the activation energy required for the ammonia removal reaction is lowered, so that the catalytic reaction proceeds rapidly and exhibits improved activity.
  • the working electrode may include, for example, a rotating disk electrode. However, as long as it can implement the object of the present invention, it is not limited thereto.
  • the counter electrode is an electrode used to facilitate the current flow of the working electrode and complete the reaction.
  • the counter electrode undergoes a reduction reaction and the working electrode undergoes a reduction reaction.
  • an oxidation reaction may occur in the counter electrode.
  • the counter electrode may include a graphite rod having excellent performance of the counter electrode due to its large surface area. However, as long as it can implement the object of the present invention, it is not limited thereto.
  • the reference electrode is a standard for controlling and measuring the potential of the working electrode, is used to measure the voltage of the working electrode as an absolute value, and is made of a material in which the voltage does not change significantly during the electrochemical reaction.
  • the reference electrode may include Ag/AgCl or Ag/Ag + .
  • the electrolyte connects the working electrode, the counter electrode, and the reference electrode, and may include one having excellent solubility, current density, and the like.
  • the electrolyte is 1-methyl-2-pyrrolidone (NMP), acetone, ethanol, n-propanol, n-butanol (n-butanol), n-hexane, cyclohexanol, acetic acid, ethyl acetate, diethyl ether, dimethylformamide formamide: DMF), dimethylacetamide: DMAc, dioxane, tetrahydrofuran: THF, dimethyl sulfoxide: DMSO, cyclohexane, benzene, toluene (toluene), xylene (xylene), water (water) and any one or more selected from the group consisting of derivatives or mixtures thereof.
  • dimethyl formamide (DMF) may be included.
  • DMF dimethyl form
  • FIG. 3 is a cyclic voltammetry graph comparing catalytic activity results according to electrolyte types of an organic-based electrochemical system for removing unreacted ammonia according to an embodiment of the present invention.
  • the organic-based material is screened, and the catalytic activity and solubility vary depending on the type of electrolyte, and in particular, it can be seen that the organic-based DMF has excellent characteristics. .
  • the supporting electrolyte is added to compensate for insufficient conductivity because an organic solvent is used as an electrolyte, and may include, for example, an amide-based compound or an ammonium-based compound.
  • the amide-based compound is, for example, melamine (2-amino-4,6-dichlorotriazine), cyanuric chloride (cyanuric chloride), calcium cyanamide (calcium cyanamide), sodium amide (sodium amide) , melem (2,5,8-triamino-tri-s-triazine), cyanamide, dicyandiamide, and any one or more selected from the group consisting of derivatives or mixtures thereof.
  • sodium amide (NaNH 2 ) may be included. However, as long as it can implement the object of the present invention, it is not limited thereto.
  • the ammonium-based compound is, for example, ammonium fluoride (Ammonium fluoride, NH 4 F), ammonium fluoborate (NH 4 BF 4 ), ammonium acetate (Ammonium Acetate, CH 3 COONH 4 ), Ammonium sulfamate (NH 4 SO 3 NH 2 ), Ammonium hexafluorophosphate (NH 4 PF 6 ), Ammonium hexafluoroaluminate (NH 4 ) 3 AlF 6 ), Ammonium nitrite (NH 4 NO 2 ), Ammonium perchlorate (NH 4 ClO 4 ), Ammonium Sulfite (NH 4 ) 2 SO 3 ), Ammonium carbonate (NH 4 ) 2 CO 3 ), Diammonium molybdate (NH 4 ) 2 MoO 4 ), Ammonium phosphate (NH 4 ) 2 PO 4 ), Ammonium Permanganate (NH 4 MnO 4 ), ammonium dichromate (NH 4 Mn
  • ammonium hexafluorophosphate (Ammonium hexafluorophosphate, NH 4 PF 6 ) may be included.
  • Ammonium hexafluorophosphate NH 4 PF 6
  • it is not limited thereto.
  • FIG. 4 is a cyclic voltammetry graph comparing catalytic activity results according to the type of lipoelectrolyte of an organic-based electrochemical system for removing unreacted ammonia according to an embodiment of the present invention.
  • the catalytic activity varies depending on the type of supporting electrolyte and the gas atmosphere.
  • metal amide-based compounds and ammonium salt-based compounds such as NaNH 2 and NH 4 PF 6 have excellent performance. It can be seen that the implementation of
  • the non-noble metal-based catalyst is, for example, graphene, carbon black, graphite, acetylene black, Denka black, Katchen black, activated carbon, mesoporous carbon, carbon nanotube, carbon nanofiber, carbon nanohorn. , Carbon nanorings, carbon nanowires and fullerenes (C 60 ) It may be supported on any one of the carbon-based support selected from the group consisting of. However, it is not necessarily limited to these, and may include all as long as it can be used as a carbon-based support in the art.
  • the carbon-based support is a support having a large specific surface area and high crystallinity, and may include a structure such as a sphere, a rod, a tube, a horn, or a plate, for example. However, it is not necessarily limited to this structure and may include any structure that can be used as a catalyst support in the art for the carbon-based support.
  • the carbon-based support may be a porous support.
  • the carbon-based support may be a porous carbon material having a large specific surface area and pores.
  • the carbon-based support may be, for example, mesoporous, and part or all of the support having various shapes may be porous.
  • the non-noble metal catalyst is selected from the group consisting of, for example, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Sn, Mo, W, Rh, Nb and Ru Any one or more may be included.
  • the non-noble metal-based catalyst may include, for example, Ti, V, Ni, W, or Nb. However, as long as it can implement the object of the present invention, it is not limited thereto.
  • the non-noble metal-based catalyst is included in the working electrode together with platinum applied on the surface of the catalyst, and through this, the activation energy required for the ammonia removal reaction is lowered, so that the catalytic reaction proceeds quickly and exhibits improved activity.
  • the platinum may be applied on the surface of the non-noble metal-based catalyst in an amount of 1.5 to 2.5 nm. Preferably, 1.7 to 2.3 nm may be applied.
  • the coating amount of platinum is less than the coating range, platinum is not properly coated on the surface of the non-noble metal catalyst, making it difficult to realize the catalytic activity of the organic-based electrochemical system by the interaction between the catalyst and the support.
  • the amount of platinum applied to the surface of the non-noble metal catalyst increases and the cost is excessive, it is difficult to solve the problems of the conventional PSA method, which was expensive for maintenance and management.
  • the electrochemical system can be used by, for example, voltammetry, amperometry, potentiometry, conductometry, coulometry and electrogravimetry.
  • cyclic voltammetry may be measured in the voltammetry method.
  • the oxidation peak or reduction peak value derived by the hydrogen oxidation reaction (HOR) and the oxygen reduction reaction (ORR) may be detected and compared and analyzed.
  • the measurement of the cyclic voltammetry (CV) may be measured after heating for activation of hydrogen.
  • the cyclic voltammetry signal may be measured by purging at least one gas selected from the group consisting of argon, hydrogen, and oxygen.
  • the organic-based electrochemical system for removing unreacted ammonia shows improved activity as the catalytic reaction proceeds quickly by lowering the activation energy required for the ammonia removal reaction through the organic-based electrochemical system when ammonia hydrogen is extracted.
  • it includes a working electrode, a counter electrode, a reference electrode, an electrolyte connecting them and a supporting electrolyte, and the working electrode includes a non-noble metal-based catalyst and platinum applied on its surface, thereby using a noble metal as an interaction between the catalyst and the support. It is characterized in that it can solve the problems of the conventional PSA method, which was high in maintenance and additional costs, by realizing an economic effect superior to that of a catalyst deposited with about 15 times more precious metal platinum.
  • RDE Rotating Disk Electrode
  • Ag/AgCl as the reference electrode
  • a graphite rod as the counter electrode
  • dimethyl formamide DMF
  • an ammonium compound (Ammonium salt) and an amide compound (Metal amide) are used as supporting electrolytes, and at this time, the working electrode is Ti, which is a non-noble metal catalyst supported on a carbon-based support, and an island-and-type method on the Ti surface
  • An organic-based simulated electrochemical three-electrode system for removing unreacted ammonia including about 2 nm of Pt was completed.
  • Example 2 an electrochemical system was completed in the same manner as in Example 1, except that V was used instead of Ti as a non-metallic catalyst.
  • Example 3 an electrochemical system was completed in the same manner as in Example 1, except that Nb was used instead of Ti as a non-metallic catalyst.
  • Example 4 the electrochemical system was completed in the same manner as in Example 1, except that W was used instead of Ti as a non-metallic catalyst.
  • Example 5 an electrochemical system was completed in the same manner as in Example 1, except that Ni was used instead of Ti as a non-metallic catalyst.
  • Comparative Example 1 an electrochemical system was completed in the same manner as in Example 1, except that Pd was used instead of Pt as a material applied to the non-metallic catalyst.
  • Comparative Example 2 an electrochemical system was completed in the same manner as in Example 1, except that Ir was used instead of Pt as a material applied to the non-metallic catalyst.
  • Comparative Example 3 an electrochemical system was completed in the same manner as in Example 1, except that Ru was used instead of Pt as a material applied to the non-metallic catalyst.
  • Comparative Example 4 an electrochemical system was completed in the same manner as in Example 1, except that Au was used instead of Pt as a material applied to the non-metallic catalyst.
  • Comparative Example 5 an electrochemical system was completed in the same manner as in Example 1, except that Ni was used instead of Pt as a material applied to the non-metallic catalyst.
  • Comparative Example 6 an electrochemical system was completed in the same manner as in Example 1, except that Ag was used instead of Pt as a material applied to the non-metallic catalyst.
  • Comparative Example 7 the electrochemical system was completed in the same manner as in Example 1, except that 30 nm of platinum was applied to the GC instead of Ti as a non-metallic catalyst.
  • Comparative Example 8 the electrochemical system was completed in the same manner as in Example 1, except that 2 nm of platinum was applied to the GC instead of Ti as a non-metallic catalyst.
  • the catalyst was evaluated by the following method.
  • a three-electrode cell for RDE experiment was constructed using the fabricated catalyst, and the polarization curve of Ammonia Reduction Reaction was measured under normal pressure conditions at 80 °C. The potential at a constant current density (10 mA/cm 2 ) was read from the polarization curve obtained at this time.
  • Example 1 sample name overvoltage Example 1 (Pt 2nm on Ti) 0.253V Example 2 (Pt 2nm on V) 0.26V Example 3 (Pt 2 nm on Nb) 0.268V Example 4 (Pt 2nm on W) 0.276V Example 5 (Pt 2nm on Ni) 0.28V Comparative Example 7 (Pt 30nm on GC) 0.26V Comparative Example 8 (Pt 2 nm on GC) 0.40V
  • 5 is a cyclic voltammetry graph comparing the activity of noble metal-based substances in an organic-based electrochemical system for removing unreacted ammonia according to an embodiment of the present invention.
  • FIG. 6 is a bar graph comparing non-noble metal-based catalytic activity of an organic-based electrochemical system for removing unreacted ammonia according to an embodiment of the present invention
  • FIG. 7 is a cyclic voltammetry graph related thereto.
  • the organic-based electrochemical system for removing unreacted ammonia according to the present invention through the physical property evaluation experiment example is the activation energy required for the ammonia removal reaction through the organic-based electrochemical system when extracting ammonia hydrogen compared to the conventional invention. It lowers the catalytic reaction and shows improved activity.
  • it includes a working electrode, a counter electrode, a reference electrode, an electrolyte connecting them, and a supporting electrolyte, and the working electrode includes a non-noble metal-based catalyst and platinum applied on its surface.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

La présente invention concerne un système électrochimique à base organique servant à éliminer l'ammoniac non réagi. Plus spécifiquement, la présente invention abaisse, pendant l'extraction d'hydrogène à partir d'ammoniac, l'énergie d'activation requise pour une réaction d'élimination d'ammoniac à travers un système électrochimique à base organique, de telle sorte qu'une réaction catalytique se déroule rapidement, et ainsi une activité améliorée est présentée. La présente invention comprend une électrode de travail, une contre-électrode et une électrode de référence, et un électrolyte et un électrolyte de support, qui les relient. L'électrode de travail comprend un catalyseur à base de métal non noble et du platine appliqué à sa surface de telle sorte que l'utilisation de métaux nobles est réduite par l'interaction entre un catalyseur et un support, et ainsi un effet économique supérieur à celui d'un catalyseur ayant, sur lequel est déposé, environ 15 fois plus de platine, qui est un métal noble, est réalisé, et le problème de maintenance élevée et de dépenses accidentelles d'un procédé PSA classique peut être résolu.
PCT/KR2022/017519 2021-12-27 2022-11-09 Système électrochimique à base organique servant à éliminer l'ammoniac non réagi WO2023128244A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020210188484A KR102681537B1 (ko) 2021-12-27 2021-12-27 유기계 기반의 미반응 암모니아 제거용 전기화학시스템
KR10-2021-0188484 2021-12-27

Publications (1)

Publication Number Publication Date
WO2023128244A1 true WO2023128244A1 (fr) 2023-07-06

Family

ID=86999353

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2022/017519 WO2023128244A1 (fr) 2021-12-27 2022-11-09 Système électrochimique à base organique servant à éliminer l'ammoniac non réagi

Country Status (2)

Country Link
KR (1) KR102681537B1 (fr)
WO (1) WO2023128244A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004053744A (ja) * 2002-07-17 2004-02-19 Konica Minolta Holdings Inc 画像形成装置
JP2009515036A (ja) * 2005-10-14 2009-04-09 オハイオ ユニバーシティ アルカリ媒体中におけるアンモニア及びエタノールを酸化するためのカーボンファイバー電極触媒、ならびに水素生成、燃料電池および精製プロセスへのその適用
KR20110079668A (ko) * 2008-10-30 2011-07-07 소니 주식회사 백금 함유 촉매 및 그 제조 방법과, 전극 및 전기화학 디바이스
KR20160035338A (ko) * 2014-09-23 2016-03-31 한국에너지기술연구원 전 유기계 활물질을 포함하는 레독스 흐름전지
KR102057211B1 (ko) * 2019-06-18 2019-12-18 (주)센코 전기화학식 암모니아 가스 센서
KR102310428B1 (ko) * 2020-04-01 2021-10-08 공주대학교 산학협력단 양기능성 촉매체를 포함하는 전극 소재, 그의 제조 방법, 및 이를 포함하는 금속공기전지

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100736538B1 (ko) * 2005-01-13 2007-07-06 주식회사 엘지화학 연료전지용 전극 촉매
KR101150843B1 (ko) * 2010-09-15 2012-06-13 한국생산기술연구원 질화탄소와 전도성 탄소 지지체를 포함하는 고분자 전해질 연료전지용 캐소드 촉매 제조방법, 고분자 연료전지용 촉매, 고분자 연료전지용 전극 및 고분자 연료전지
KR101763382B1 (ko) 2015-08-27 2017-08-02 한국에너지기술연구원 펠트 전극 특성 분석용 셀의 작업 전극 및 이를 구비하는 펠트 전극 분석용 셀
KR102250351B1 (ko) * 2019-10-04 2021-05-11 울산과학기술원 원자 분산 촉매의 제조방법, 그에 의해 제조된 원자 분산 촉매 및 원자 분산 촉매를 포함하는 산소환원반응 촉매

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004053744A (ja) * 2002-07-17 2004-02-19 Konica Minolta Holdings Inc 画像形成装置
JP2009515036A (ja) * 2005-10-14 2009-04-09 オハイオ ユニバーシティ アルカリ媒体中におけるアンモニア及びエタノールを酸化するためのカーボンファイバー電極触媒、ならびに水素生成、燃料電池および精製プロセスへのその適用
KR20110079668A (ko) * 2008-10-30 2011-07-07 소니 주식회사 백금 함유 촉매 및 그 제조 방법과, 전극 및 전기화학 디바이스
KR20160035338A (ko) * 2014-09-23 2016-03-31 한국에너지기술연구원 전 유기계 활물질을 포함하는 레독스 흐름전지
KR102057211B1 (ko) * 2019-06-18 2019-12-18 (주)센코 전기화학식 암모니아 가스 센서
KR102310428B1 (ko) * 2020-04-01 2021-10-08 공주대학교 산학협력단 양기능성 촉매체를 포함하는 전극 소재, 그의 제조 방법, 및 이를 포함하는 금속공기전지

Also Published As

Publication number Publication date
KR102681537B1 (ko) 2024-07-03
KR20230099268A (ko) 2023-07-04

Similar Documents

Publication Publication Date Title
WO2020096338A1 (fr) Procédé de préparation d'un catalyseur à atome unique supporté sur un support en carbone
US10158124B2 (en) Fuel cell electrode catalyst and method for activating catalyst
US10125429B2 (en) Electrodes containing iridium nanoparticles for the electrolytic production of oxygen from water
WO2020226449A1 (fr) Piégeur de radicaux, son procédé de préparation et ensemble membrane-électrode le contenant
WO2016064086A1 (fr) Catalyseur de génération d'oxygène, électrode et système de réaction électrochimique
WO2011021881A2 (fr) Plaque de séparateur métallique pour une pile à combustible ayant un film de revêtement formé sur la surface et son procédé de production
WO2019132467A1 (fr) Oxyde de graphène réduit, complexe de substance fonctionnelle à base d'oxyde de graphène réduit et son procédé de production
KR20110109350A (ko) 금속 산화물 나노선을 함유하는 혼합 촉매 제조방법, 이에 의해 제조된 혼합 촉매를 포함하는 전극 및 연료전지
CN107941867B (zh) 一种可联合检测呼气一氧化氮和呼气硫化氢的电化学气体传感器
JP2002525811A (ja) ガス拡散電極を製造するためのスクリーン印刷法
WO2019098474A1 (fr) Catalyseur et cellule électrochimique comprenant un catalyseur
WO2023128244A1 (fr) Système électrochimique à base organique servant à éliminer l'ammoniac non réagi
US4614692A (en) Fuel cell electrode, process for producing the same and fuel cell using the same
Rajkumar et al. Single step electrochemical fabrication of highly loaded palladium nanoparticles decorated chemically reduced graphene oxide and its electrocatalytic applications
WO2021062906A1 (fr) Électrode utilisée pour dégrader un polluant organique en phase gazeuse, procédé de préparation associé, et dispositif de dégradation de polluant organique en phase gazeuse
WO2015069069A1 (fr) Pile à combustible et son procédé de fabrication
WO2013015650A2 (fr) Électrode à dendrites en alliage cu-co et biocapteur l'incluant
WO2021125543A1 (fr) Catalyseur de réaction d'évolution d'hydrogène comprenant des nanofibres d'alliage rhodium-nickel, et procédé de fabrication de nanofibres d'alliage rhodium-nickel
US20150280245A1 (en) Method for producing pt-free electrocatalysts for fuel cells and batteries
US20060051283A1 (en) Method for producing carbon fiber, catalyst structure and membrane electrode junction body for solid polymer fuel cell
WO2017039146A1 (fr) Électrode à couche mince de cellulose comprenant des nanodendrites d'argent, et son procédé de préparation
US20220293966A1 (en) Fuel cell electrode catalyst, method for selecting the same, and fuel cell including the same
WO2022045816A1 (fr) Catalyseur de réduction utilisant une paire acide-base de lewis frustrée graphitique (gflp) et système de réduction l'utilisant
WO2020101085A1 (fr) Procédé de préparation d'hybride de nanoparticules de graphène-palladium à structure en nano-éponge et catalyseur hybride aux nanoparticules de graphène-palladium préparé à l'aide dudit procédé
Diao et al. The electrochemical reduction of fullerenes, C60 and C70

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22916398

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE