Disclosed herein are doped perovskite oxides. The doped perovskite oxides may be used as a cathode material in an electrochemical cell to electrochemically generate ammonia from N.sub.2. The doped perovskite oxides may be combined with nitride compounds, for instance iron nitride, to further increase the efficiency of the ammonia production.

Disclosed herein are doped perovskite oxides. The doped perovskite oxides may be used as a cathode material in an electrochemical cell to electrochemically generate ammonia from N.sub.2. The doped perovskite oxides may be combined with nitride compounds, for instance iron nitride, to further increase the efficiency of the ammonia production.

A process and system for synthesis of ammonia includes an electrochemical main cell and an electrochemical preliminary cell upstream of the main cell. A voltage is applied between the anode and cathode of the preliminary cell and the main cell. The anodic half-cell of the preliminary cell is supplied with water, and the cathodic half-cell of the preliminary cell with nitrogen and oxygen. Oxygen is in the anodic half-cell of the preliminary cell, and nitrogen and water are in the cathodic half-cell of the preliminary cell. The anodic half-cell of the main cell is supplied with water, and the cathodic half-cell of the main cell with nitrogen that has been obtained in the cathodic half-cell of the preliminary cell. Oxygen is in the anodic half-cell of the main cell, and ammonia in the cathodic half-cell of the main cell.

A process and system for synthesis of ammonia includes an electrochemical main cell and an electrochemical preliminary cell upstream of the main cell. A voltage is applied between the anode and cathode of the preliminary cell and the main cell. The anodic half-cell of the preliminary cell is supplied with water, and the cathodic half-cell of the preliminary cell with nitrogen and oxygen. Oxygen is in the anodic half-cell of the preliminary cell, and nitrogen and water are in the cathodic half-cell of the preliminary cell. The anodic half-cell of the main cell is supplied with water, and the cathodic half-cell of the main cell with nitrogen that has been obtained in the cathodic half-cell of the preliminary cell. Oxygen is in the anodic half-cell of the main cell, and ammonia in the cathodic half-cell of the main cell.

The present invention relates to a novel approach of obtaining a gas diffusion electrode (GDE), the gas diffusion electrodes obtained using said method and the use thereof in the electrocatalytic conversion of gaseous reactants into economically interesting reaction products. The GDEs obtained using the method of the present invention are particularly useful in the electrochemical of gaseous reactants such as CO2, H2, N2, or O2 into bulk chemicals and fuels such as Syngas, Formic Acid, Methanol, Ethanol, Ethane, Ethylene, Methane, Ammonia, and the like.

This invention relates to a process for the electrochemical synthesis of ammonia (NH3) and the ammonia produced thereby. Ammonia is synthesized by the electrochemical reduction of nitrogenous materials such as nitrogen or nitrates (NO.sub.3.sup.-) using metal phthalocyanine such as iron phthalocyanine (FePc) or β-cobalt phthalocyanine (CoPc) or iron phthalocyanine-molybdenum disulfide (FePc-MoS.sub.2) or cobalt phthalocyanine- carbon nitride (CoPc-C.sub.3N.sub.4) catalyst at very low pressure and room temperature by applying low potential.

The invention relates to a process and system for electrolytic production ammonia. The process comprises feeding nitrogen to an electrolytic cell, where it comes in contact with a cathode electrode surface, wherein said surface has a catalyst surface comprising at least one transition metal oxide, the electrolytic cell further comprising a proton donor, and running a current through said electrolytic cell, whereby nitrogen reacts with protons to form ammonia. The process and system of the invention uses an electrochemical cell with a cathode surface having a catalytic surface that is preferably charged with one or more of Rhenium oxide, Tantalum oxide and Niobium oxide.

The invention relates to a process and system for electrolytic production ammonia. The process comprises feeding nitrogen to an electrolytic cell, where it comes in contact with a cathode electrode surface, wherein said surface has a catalyst surface comprising at least one transition metal oxide, the electrolytic cell further comprising a proton donor, and running a current through said electrolytic cell, whereby nitrogen reacts with protons to form ammonia. The process and system of the invention uses an electrochemical cell with a cathode surface having a catalytic surface that is preferably charged with one or more of Rhenium oxide, Tantalum oxide and Niobium oxide.

The disclosure relates to units, systems and methods for producing ammonia from a nitrogen-containing feedstock from sources like wastewater, ammonium nitrate solution, or an input gas containing one or more nitrogen-containing species, which can advantageously reduce carbon dioxide emissions, and energy consumption, as well as balance the nitrogen cycle.

The disclosure relates to units, systems and methods for producing ammonia from a nitrogen-containing feedstock from sources like wastewater, ammonium nitrate solution, or an input gas containing one or more nitrogen-containing species, which can advantageously reduce carbon dioxide emissions, and energy consumption, as well as balance the nitrogen cycle.