EP4093701A1 - Procédé de production d'ammoniac - Google Patents

Procédé de production d'ammoniac

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Publication number
EP4093701A1
EP4093701A1 EP21701877.9A EP21701877A EP4093701A1 EP 4093701 A1 EP4093701 A1 EP 4093701A1 EP 21701877 A EP21701877 A EP 21701877A EP 4093701 A1 EP4093701 A1 EP 4093701A1
Authority
EP
European Patent Office
Prior art keywords
ammonia
mode
process according
gas
anyone
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.)
Withdrawn
Application number
EP21701877.9A
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German (de)
English (en)
Inventor
Johan Martens
Lander HOLLEVOET
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Katholieke Universiteit Leuven
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Katholieke Universiteit Leuven
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Filing date
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Application filed by Katholieke Universiteit Leuven filed Critical Katholieke Universiteit Leuven
Publication of EP4093701A1 publication Critical patent/EP4093701A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/02—Preparation, purification or separation of ammonia
    • C01C1/04—Preparation of ammonia by synthesis in the gas phase
    • 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
    • C25B1/01—Products
    • C25B1/27—Ammonia
    • 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
    • C25B15/00—Operating or servicing cells
    • C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
    • C25B15/087—Recycling of electrolyte to electrochemical cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • 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
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
    • H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
    • H01M8/04126—Humidifying
    • 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
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04828—Humidity; Water content
    • H01M8/04843—Humidity; Water content of fuel cell exhausts
    • 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
    • H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
    • H01M8/0656—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants by electrochemical means
    • 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

  • present invention concerns an energy-efficient ammonia production from air and water using electrocatalysts with limited faradaic efficiency.
  • Ammonia is an industrial large volume chemical ⁇ Ore, I. et al. MINERAL COMMODITY SUMMARIES 2019. (2019)). It is used in fertilizers and many chemical products and materials, ( Philibert , C. Renewable energy for industry: From green energy to green materials and fuels. Int. Energy Agency (2017) doi: 10.1111/j.l 365-2990.2010.01130 and CXP Group. Business Applications Trends in 2017 and 2018. (2016)) and it pops up as a candidate green energy vector ( Giir , T. M. Review of electrical energy storage technologies, materials and systems: Challenges and prospects for large-scale grid storage. Energy Environ. Sci. 11, 2696-2767 (2016)).
  • Electrochemical ammonia production from water and nitrogen gas using renewable electricity is a potential solution to reduce the C02 footprint of ammonia production. Electrocatalysts with steadily increasing faradaic efficiency are being reported, but there seems to be a trade-off between ammonia selectivity and catalytic activity (Zhou, F. et al. Electro-synthesis of ammonia from nitrogen at ambient temperature and pressure in ionic liquids. Energy Environ. Sci. 10, 2516-2520 (2017); Wang, M. et al. Over 56.55% Faradaic efficiency of ambient ammonia synthesis enabled by positively shifting the reaction potential. Nat. Commun. 10, 1-8 (2019) and Song, Y. et al. A physical catalyst for the electrolysis of nitrogen to ammonia. Sci.
  • Hydrogen gas is the main by-product (Wang, M. et al. Over 56.55% Faradaic efficiency of ambient ammonia synthesis enabled by positively shifting the reaction potential. Nat. Commun. 10, 1-8 (2019) and Garagounis, Vourros, Stoukides, Dasopoulos & Stoukides. Electrochemical Synthesis of Ammonia: Recent Efforts and Future Outlook. Membranes (Basel). 9, 112 (2019)).
  • liquid ammonia for its high energy density has the potential to be a chemical energy vector of the future and it can play a supportive role in the hydrogen economy, to make this possible, ammonia production needs to be decarbonized, and green ammonia needs to be produced with renewable energy instead of natural gas or other fossil energy source.
  • Electrochemical reduction of nitrogen gas using hydrogen gas is an option, but using water as source of hydrogen atoms is even more appealing.
  • State-of-the-art electrocatalysts for ammonia synthesis from nitrogen gas and water produce lots of hydrogen by-product.
  • Present invention provides a system that demonstrates that low ammonia selectivity of electrocatalysts does have not to be an obstacle to energy-efficient ammonia production.
  • the SECAM process Small Electrochemical AMmonia synthesis
  • the electrochemical ammonia synthesis process is powered with photovoltaics and take advantage of the day-night cycle for converting the excess hydrogen by-product produced during the day to make additional ammonia at night.
  • the process is operated using electrocatalysts for energy-efficient production of green ammonia.
  • Present invention provides an electrochemical ammonia production process that copes with the cyclic nature of renewable electricity production by using the hydrogen by-product for bridging the dark periods.
  • the invented process brings ammonia a step closer to becoming a green fuel.
  • the invention is broadly drawn to energy-efficient ammonia production from air and water.
  • a process for ammonia production from air and water characterised in that the process uses hydrogen gas in (i) a reaction with oxygen of air to prepare nitrogen gas and water to be fed to the ammonia synthesis reactor, and (ii) in performing electrocatalytic ammonia synthesis in an electrochemical cell using H 2
  • a process for ammonia production from air and water characterised in that the process uses hydrogen gas in (i) a reaction with oxygen of air to prepare nitrogen gas and water to be fed to the ammonia synthesis reactor, and (ii) in performing electrocatalytic ammonia synthesis in an electrochemical cell using H 2 further characterized in that it has two modes of operation: (A) energy intensive production of ammonia out of nitrogen gas and water whereby to make air suitable for ammonia production, whereby
  • Preferred embodiments of said detection method are as defined in the annexed dependent claims 2 to 23.
  • a process for ammonia production from air and water characterised in that the process uses hydrogen gas in (i) a reaction with oxygen of air to prepare nitrogen gas and water to be fed to the ammonia synthesis reactor, and (ii) in performing electrocatalytic ammonia synthesis in an electrochemical cell using H 2 and whereby O 2 is removed by reaction with thin a fuel cell, generating electricity, or in a burner, generating heat.
  • A energy intensive production of ammoni
  • a process for ammonia production from air and water characterised in that the process uses hydrogen gas in (i) a reaction with oxygen of air to prepare nitrogen gas and water to be fed to the ammonia synthesis reactor, and (ii) in performing electrocatalytic ammonia synthesis in an electrochemical cell using H 2
  • a process for ammonia production from air and water characterised in that the process uses hydrogen gas in (i) a reaction with oxygen of air to prepare nitrogen gas and water to be fed to the ammonia synthesis reactor, and (ii) in performing electrocatalytic ammonia synthesis in an electrochemical cell using H 2 further characterized that when operated with an electrocatalysts with limited faradaic efficiency of 20- 30 % and excess H 2 gas is produced.
  • a process for ammonia production from air and water characterised in that the process uses hydrogen gas in (i) a reaction with oxygen of air to prepare nitrogen gas and water to be fed to the ammonia synthesis reactor, and (ii) in performing electrocatalytic ammonia synthesis in an electrochemical cell using H 2 further characterized that the electrocatalyst should have a faradaic efficiency for ammonia production of 84 - 86%, preferably 84 - 85 %, more preferably 85% so that when mode A is run such as to produce exactly the amount of hydrogen needed to eliminate the O 2 from the intake air.
  • a process for ammonia production from air and water characterised in that the process uses hydrogen gas in (i) a reaction with oxygen of air to prepare nitrogen gas and water to be fed to the ammonia synthesis reactor, and (ii) in performing electrocatalytic ammonia synthesis in an electrochemical cell using H 2 further characterized in that it has two modes of operation: (A) energy intensive production of ammonia out of nitrogen gas and water whereby to make air suitable for ammonia production, whereby
  • the process described above may be embodied as that the outlet gas of the electrochemical cell composed of NH 3 , H 2 and unreacted N 2 , the NH 3 is condensed out of the gas stream, resulting in a residual stream of N 2 and H 2.
  • the residual stream of N 2 and H 2 can be refed to the inlet of the process to have O 2 removal out of inlet air and part is stored in a tank as feed for Mode B .
  • the process described above may also be embodied as that water is the source of H-atoms and air is the source of N-atoms.
  • the process described above may also be embodied as that the molar ratio of N 2 /H 2 in the process is fixed at 1/3 by tuning the air and water intake of the process.
  • the process described above may also be embodied as that the H 2 /N 2 gas mixture is stoichiometrically converted to ammonia in Mode B and stored temporarily, together with nitrogen.
  • H 2 /N 2 gas mixture is sent to the anode of the electrochemical cell, where the hydrogen oxidation reaction (HOR) takes place (mode B) and consequently the remaining gas is sent to the cathode, where ammonia and hydrogen gas are formed.
  • HOR hydrogen oxidation reaction
  • mode B ammonia is produced until all N 2 and H 2 gas is converted by recycling.
  • the process described above may also be embodied as that the mode A and mode B steps of the process make use of the same electrochemical cell or that the ammonia production in Mode B consumes less than 30 % of the electric power required for Mode A.
  • the process described above may also be embodied as that electrochemical cell is energized via photovoltaics.
  • the process described above may also be embodied as that the anode and or cathode is electrocatalytic.
  • the process described above may also be embodied as that the mode of operation is sequences of operation of mode A and mode B so that when a large amount of energy is available, for example at noon, mode A is executed and when the energy supply is limited, for example at night or on clouded days, mode B is executed or that at least two SECAM reactors run the process in parallel and operated in mode A or B to optimize the ammonia productivity according to the availability of energy.
  • the process described above may also be embodied as that the condensation of ammonia is carried out under a pressure above atmospheric pressure or whereby the condensation of ammonia is carried under a pressure in the range of 1 MPa to 2 MPa, preferably a pressure of 1.5 MPa to 1.7 MPa and most preferably a pressure of 1.55 MPa to 1.65 MPa or whereby the ammonia is condensed at a temperature in the range of 18 °C - 22 °C.
  • the process described above may also be embodied as that the separation of ammonia out of the gas stream carried at atmospheric pressure and the ammonia is recovered by an extraction.
  • the Haber-Bosch process for ammonia production is one of the oldest industrial catalytic processes ( Licht , S. et al. Ammonia synthesis by N2 and steam electrolysis in molten hydroxide suspensions of nano scale Fe203. Science (80-. ). 345, 637-640 (2014)).
  • the first ammonia plant went on stream in 1913 ( Zapp , K.-H. et al. Ammonia, 1. Introduction. Ullmann’s Encycl. Ind. Chem. 263-285 (2012) doi:10.1002/14356007.a02).
  • the H 2 for the Haber-Bosch process is typically produced by methane steam reforming.
  • CO 2 emission of the Haber-Bosch process amounts up to 1.9 ton per ton of ammonia produced (Rafiqul, L, Weber, C., Lehmann, B. & Voss, A. Energy efficiency improvements in ammonia production - Perspectives and uncertainties. Energy 30, 2487-2504 (2005)).
  • Ammonia production worldwide was responsible for ca. 420 Mt CO 2 (Zhou, F. et al. Electro-synthesis of ammonia from nitrogen at ambient temperature and pressure in ionic liquids. Energy Environ. Sci. 10, 2516-2520 (2017)).
  • the invented SECAM process uses this hydrogen gas for two purposes: (i) reaction with oxygen of air to prepare nitrogen gas and water to be fed to the ammonia synthesis reactor, and (ii) performing electrocatalytic ammonia synthesis using
  • the SECAM process has two modes of operation: energy intensive production of ammonia out of nitrogen gas and water according to Eq.1 (Mode A, Fig. 1A), and an energy extensive production of ammonia out of an N 2 /H 2 gas mixture according to Eq.2 (Mode B, Fig. 1B).
  • Eq.1 Mode A, Fig. 1A
  • Eq.2 Mode B, Fig. 1B
  • the half reaction N 2 + 6 H 2 O + 6 e- ⁇ 2 NH 3 + 6 OH- in alkaline environment, or N2 + 6 H + + 6 e- ⁇ 2 NH 3 in acidic environment takes place in both Mode A and Mode B and is essential for the electrochemical production of ammonia.
  • air is used as a source of nitrogen.
  • O 2 is removed by reaction with H 2 . This can be done in a fuel cell, generating electricity, or in a burner, generating heat.
  • well-established technology such as pressure swing adsorption, membrane separation or cryogenic distillation can be used to produce N 2 .
  • the gas containing already some water from the reaction of O 2 with H 2 is sent through a humidifier where additional water vapour is added.
  • water can be injected directly into the reactor.
  • the hydrated nitrogen gas is fed to the electrochemical cell, where ammonia is formed on the cathode.
  • the hydrogen evolution reaction (HER) is competing with ammonia synthesis.
  • the electrocatalyst should have a faradaic efficiency for ammonia production of 85 %.
  • State-of-the-art electrocatalysts have lower faradaic efficiency (' Garagounis , Vourros, Stoukides, Dasopoulos & Stoukides. Electrochemical Synthesis of Ammonia: Recent Efforts and Future Outlook. Membranes (Basel). 9, 112 (2019)), and excess H 2 gas is produced.
  • the resulting outlet gas of the cathode compartment is composed of NH 3 , H 2 and unreacted N 2 .
  • NH 3 is condensed out of the gas stream, resulting in a residual stream of N2 and H 2 . Part of this stream serves the O 2 removal out of inlet air; part is stored in a tank as feed for Mode B.
  • Water is the source of H-atoms and air is the source of N-atoms.
  • the molar ratio of N 2 /H 2 in the process is fixed at 1/3 by tuning the air and water intake of the process.
  • This gas mixture is stoichiometrically converted to ammonia in Mode B and stored temporarily, together with nitrogen.
  • Mode B the H2/N2 gas mixture is sent to the anode of the electrochemical cell, where the hydrogen oxidation reaction (HOR) takes place.
  • HOR hydrogen oxidation reaction
  • the remaining gas is sent to the cathode, where ammonia and hydrogen gas are formed.
  • ammonia is produced until all N2 and H2 gas is converted by recycling.
  • Modes A and B make use of the same electrochemical cell.
  • Ammonia production in Mode B consumes less than 20 % of the electric power required for Mode A.
  • Mode A and B Operation of SECAM according to Mode A and B is dependent of the availability of solar energy. When a large amount of energy is available, for example at noon, mode A is executed. When the energy supply is limited, for example at night or on clouded days, mode B is executed.
  • SECAM reactors can run in parallel and operated either in Mode A or B to optimize the ammonia productivity according to the availability of energy.
  • the processes are operated at a pressure of 1.6 MPa. At this pressure.
  • An additional benefit of the increased pressure is a positive effect on the reaction rate by the first order kinetics (Zhang, Zhao, Shi, Waterhouse and Zhang, Photocatalytic ammonia synthesis: recent progress and future. EnergyChem. 1, 2 (2019)).
  • the increased pressure entails an additional energy consumption, and materials cost for making the reactor pressure resistant.
  • the process can be run at atmospheric pressure if the produced ammonia is recovered by an extraction with water.
  • the energy consumption of SECAM ammonia synthesis is plotted against the Faradaic efficiency of the electrocatalysts is plotted in Fig. 3. It is clear the energy consumption starts to increase rapidly at FE’s below 20 %. However, at FE’s above 20 %, the curve flattens. Compared to an electrocatalyst with a FE of 85 %, a 2.8 fold decrease to a FE of 30 % results in only a 37 % increase in energy consumption. In the past, previous studies were mainly focused on obtaining very high FE’s. The ARPA-E (Advanced Research Projects Agency- Energy) determined a minimal FE of 90 % for the process to be economically feasible (ARPA- E.
  • ARPA- E Advanced Research Projects Agency- Energy
  • SECAM electrochemical ammonia production technologies and materials. Int. J. Hydrogen Energy. 38, 14576-14594 (2013)). SECAM uses similar amounts of energy, ranging from 0.56 MJ/mol for a FE of 85 % to 0.92 MJ/mol for a FE of 20 %. As an additional advantage, SECAM allows for efficient decentralized production. The Haber-Bosch process is only cost efficient at a very large scale and requires distribution infrastructure. This infrastructure is absent in less developed parts of the world (Gallowway & Cowling. Reactive nitrogen and the world: 200 years of change. AMBIO A J. Hum. Environ. 31, 64-71 (2002)).
  • Present invention shows how to execute efficient electrochemical ammonia production that is competitive with the Haber-Bosch process in terms of energy consumption.
  • the discussed process is equally efficient at a small scale and allows a delocalised ammonia production.
  • the process only requires a faradaic efficiency of 20-30 % to operate efficiently. With this work, we hope to stimulate future research to prioritise increasing the current density instead of trying to obtain very high faradaic efficiencies at a low current density.
  • the combined FE of the NRR and HER is 100 %.
  • the ambient temperature is 20 °C
  • the temperature of the system is assumed to be at 40 °C due to heat development in the H 2 -bumer and energy losses.
  • the maximal amount of vapour present in the gas phase is independent of the gas composition.
  • the condenser removes all the ammonia out of the gas phase
  • the faradaic efficiency is independent of the composition of the feed gas of the reactor
  • the overpotential is independent on the gas composition
  • the reactor operates in an alkaline environment.
  • the same conclusions apply for an acidic environment.
  • the intake air only consists out of N 2 and O 2 .
  • Other compounds, such as Ar, are neglected. In reality, it might be necessary to add a purge stream during operation in Mode B.
  • the reactor has a constant power supply of 150 W.
  • the stoichiometrically limiting reagents in the reactor is H 2 O. Half of the H 2 O entering the reactor is consumed. The rest is recycled.
  • the oxygen present in the incoming air is removed by burning H 2 . Energy is not recuperated in a FC.
  • the local temperature rise in the electrochemical cell is large enough to avoid the condensation of water due to the reduced amount of gas.
  • the stream coming from the condenser has 8.83 x 10 -3 mol H 2 O/mol gas (. Engineering ToolBox, Compressed Air and Water Content, https://www.engineeringtoolbox.com/water-content-compressed-air-d_1275.html, (accessed 20 December 2019)).
  • the excess H 2 O is condensed, resulting in a small amount of H 2 O present in the produced ammonia.
  • Ref. 3 L. I. Krishtalik, BBA - Bioenerg., 1986, 849, 162-171
  • Ref. 4 X. Guo, H. Du, F. Qu and J. Li, J. Mater. Chem. A, 2019, 7, 3531-3543
  • FIG.1 provides a schematic overview of the half reactions occurring in the electrochemical cell, for mode A and mode B.
  • FIG. 2 provides a schematic overview of a process that we call the SECAM process for electrochemical ammonia production.
  • A Energy intensive production of ammonia from water and air.
  • B Energy extensive production of ammonia from an N2/H2 gas mixture.
  • A is shown electrochemical reactor [1] with the electrocatalysts, cathode [1a] and anode [1b] that when energized with DC transfers H 2 O and N 2 present in the reactor into NH 3 , H 2 and O 2 .
  • Mode A when H 2 , N 2 and NH 3 is fed into a condenser the NH 3 can be separate. Eventually H 2 and N 2 is temporarily stored.
  • H 2 and N 2 can be consequently fed with air into a burner where O 2 + 2 H 2 is transformed in to 2H 2 O, where after H 2 , N 2 , and H 2 O is fed into an humidifier.
  • H 2 and N 2 form the temporarily storage tank is fed with H 2 and N 2 from the condenser into the electrochemical reactor [1] with the electrocatalysts, cathode [1a] and anode [1b] that when energized with DC transfers H 2 and N 2 into NH 3 .
  • H 2 and N 2 from the electrochemical reactor [1] is fed back into the electrochemical reactor [1] and H 2 , N 2 and NH 3 is guided into the condenser to remove NEb.
  • FIG. 3 is a graphic that shows the average energy consumption of SECAM per mole of ammonia produced, as a function of the faradaic efficiency of the catalyst (solid line), compared to the energy consumption of the natural gas-based Haber-Bosch process, (Rafiqul, I., Weber, C., Lehmann, B. & Voss, A. Energy efficiency improvements in ammonia production - Perspectives and uncertainties.
  • (top) Mode A operating at 150 W. Operation in mode B is not required for full conversion to ammonia.
  • Table 2 provides values used for the energy cost of air- and water compression and standard- and overpotential of the different half reactions relevant in the electrochemical cell.

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  • Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Sustainable Energy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

Selon le but de l'invention, telle qu'elle est énoncée et largement décrite ici, l'invention concerne de marnière générale la production d'ammoniac économe en énergie à partir d'air et d'eau. L'invention concerne un procédé de production d'ammoniac à partir d'air et d'eau qui utilise de l'hydrogène gazeux dans (i) une réaction avec de l'oxygène de l'air pour préparer un gaz d'azote et de l'eau devant être introduite dans le réacteur de synthèse d'ammoniac, et (ii) la réalisation d'une synthèse d'ammoniac électrocatalytique dans une cellule électrochimique à l'aide de H2.
EP21701877.9A 2020-01-24 2021-01-25 Procédé de production d'ammoniac Withdrawn EP4093701A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB2001017.9A GB202001017D0 (en) 2020-01-24 2020-01-24 Ammonia
PCT/EP2021/051630 WO2021148677A1 (fr) 2020-01-24 2021-01-25 Procédé de production d'ammoniac

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CA3113341A1 (fr) * 2021-03-26 2022-09-26 Hydro-Quebec Procede et systeme pour produire un gaz comprenant de l'azote (n2) et del'hydrogene (h2) par combustion d'hydrogene en presence d'air
CN115094445B (zh) * 2022-05-17 2023-11-21 南京师范大学 一种利用流化床电化学技术还原藻类浆体制备氨气的方法

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NL2011188C2 (en) * 2013-07-18 2015-01-21 Univ Delft Tech Electrolytic cell for the production of ammonia.
WO2019018875A1 (fr) * 2017-07-27 2019-01-31 Monash University Procédé, cellule et électrolyte pour la conversion de diazote

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