Method for synthesizing ammonia
AssigneeHitachi Zosen Corporation
InventorsSusumu Hikazudani, Takuma Mori, Sadao Araki
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Abstract
In the ammonia synthesis method, an anode and a cathode are arranged in an electrolyte phase at a predetermined interval; water (H2O) is supplied to an anode zone and light is radiated so that water is decomposed by a photoabsorption reaction to generate protons (H+), electrons (e−), and an oxygen gas (O2); a nitrogen gas (N2 ) is supplied to a cathode zone, and the electrons (e−) generated in the anode zone are allowed to transfer to the cathode zone through a lead, thereby generating N3− in the cathode zone; and ammonia (NH3 ) is synthesized through the reaction between the protons (H+) that have moved toward the cathode zone from the anode zone in the electrolyte phase and N3−.
Claims5
A method for synthesizing ammonia, wherein an anode and a cathode are arranged in an electrolyte phase at a predetermined interval;
- a photocatalyst is provided to the anode;
- water (H2O) is supplied to an anode zone and light is radiated so that water is decomposed by a photocatalytic reaction to generate protons (H+), electrons (e−), and an oxygen gas (O2 );
- a nitrogen gas (N2 ) is supplied to a cathode zone, and the electrons (e−) generated in the anode zone are allowed to transfer to the cathode zone through a lead, thereby generating N3−in the cathode zone;
- and ammonia (NH3 ) is synthesized through the reaction between the protons (H+) that have moved toward the cathode zone from the anode zone in the electrolyte phase and N3−, characterized in that an anode substrate is made of indium tin oxide (ITO) or fluorine tin oxide (FTO);
- the cathode is a Ni porous body, a nickel-, iron-, or ruthenium-loaded Ni porous body, carbon paper, or nickel-, iron-, or ruthenium-loaded carbon paper;
- and the photocatalyst is a visible light-responsive photocatalyst comprising an oxynitride compound, an oxysulfide compound, or an oxide containing metal ions of d10 electron state.
Dependencies are inferred from the claim text.