The techniques described herein relate to methods for the synthesis of ammonia from nitrogen and hydrogen, the methods including use of plasma, such as a microjet plasma, in a first reaction chamber to generate a vibrationally exited nitrogen atom or nitrogen containing molecule, optionally wherein the excited nitrogen atom or molecule is reacted with hydrogen in an aqueous medium, optionally wherein the medium is then recycled to remove soluble products. A system for carrying out such methods is also provided.

The techniques described herein relate to methods for the synthesis of ammonia from nitrogen and hydrogen, the methods including use of plasma, such as a microjet plasma, in a first reaction chamber to generate a vibrationally exited nitrogen atom or nitrogen containing molecule, optionally wherein the excited nitrogen atom or molecule is reacted with hydrogen in an aqueous medium, optionally wherein the medium is then recycled to remove soluble products. A system for carrying out such methods is also provided.

An advanced manufactured electrochemical reactor to convert air (N.sub.2+O.sub.2) to nitric acid (HNO.sub.3) and ammonia (NH.sub.3). The electrochemical reactor platform can be tailored via advanced manufacturing to improve activity, selectivity, energy efficiency and stability of the reactions.

An advanced manufactured electrochemical reactor to convert air (N.sub.2+O.sub.2) to nitric acid (HNO.sub.3) and ammonia (NH.sub.3). The electrochemical reactor platform can be tailored via advanced manufacturing to improve activity, selectivity, energy efficiency and stability of the reactions.

A system for synthesizing ammonia includes a reactor including an inlet portion, an outlet portion, and an energy source arranged to deliver energy to one or more reactants receivable through the inlet portion of the reactor, and the energy source activatable to reduce nitrogen to ammonia in the presence of hydrogen, at least one hydrogen pump in fluid communication with the outlet portion of the reactor, each hydrogen pump including at least one electrochemical cell, and a recirculation circuit in fluid communication between the at least one hydrogen pump and the inlet portion of the reactor and configured to direct a respective hydrogen stream from each hydrogen pump to the inlet portion of the reactor.

A system for synthesizing ammonia includes a reactor including an inlet portion, an outlet portion, and an energy source arranged to deliver energy to one or more reactants receivable through the inlet portion of the reactor, and the energy source activatable to reduce nitrogen to ammonia in the presence of hydrogen, at least one hydrogen pump in fluid communication with the outlet portion of the reactor, each hydrogen pump including at least one electrochemical cell, and a recirculation circuit in fluid communication between the at least one hydrogen pump and the inlet portion of the reactor and configured to direct a respective hydrogen stream from each hydrogen pump to the inlet portion of the reactor.

The present disclosure discloses an ABO.sub.3 type high-entropy perovskite Ba.sub.x(FeCoNiZrY).sub.0.2O.sub.3-δ electrocatalytic material and a preparation method thereof, belonging to the technical field of electrocatalytic materials. The electrocatalytic material is prepared by taking hydrated cobalt nitrate, hydrated ferric nitrate, hydrated nickel nitrate, barium nitrate, hydrated yttrium nitrate, hydrated zirconium nitrate and polyacrylonitrile staple fibers as raw materials through processes of liquid phase chelation, gelation, calcination, etc. The prepared high-entropy perovskite Ba.sub.x(FeCoNiZrY).sub.0.2O.sub.3-δ electrocatalytic material can release more electrochemical active sites due to its special nanostructure, thus showing better electrocatalytic activity. Meanwhile, by adjusting the stoichiometric ratio of A/B-site metals, the electronic structure change of five metals in a catalytic center and the change of an oxygen vacancy content are realized, and the purpose of adjusting and optimizing the nitrogen reduction performance is achieved, so that the electrocatalytic material has excellent electrocatalytic conversion of nitrogen gas into ammonia gas.

The present disclosure discloses an ABO.sub.3 type high-entropy perovskite Ba.sub.x(FeCoNiZrY).sub.0.2O.sub.3-δ electrocatalytic material and a preparation method thereof, belonging to the technical field of electrocatalytic materials. The electrocatalytic material is prepared by taking hydrated cobalt nitrate, hydrated ferric nitrate, hydrated nickel nitrate, barium nitrate, hydrated yttrium nitrate, hydrated zirconium nitrate and polyacrylonitrile staple fibers as raw materials through processes of liquid phase chelation, gelation, calcination, etc. The prepared high-entropy perovskite Ba.sub.x(FeCoNiZrY).sub.0.2O.sub.3-δ electrocatalytic material can release more electrochemical active sites due to its special nanostructure, thus showing better electrocatalytic activity. Meanwhile, by adjusting the stoichiometric ratio of A/B-site metals, the electronic structure change of five metals in a catalytic center and the change of an oxygen vacancy content are realized, and the purpose of adjusting and optimizing the nitrogen reduction performance is achieved, so that the electrocatalytic material has excellent electrocatalytic conversion of nitrogen gas into ammonia gas.

This invention relates to system for the production of ammonia synthesis gas, comprising: one or more electrically driven air separation unit(s) configured to separate nitrogen from air; and one or more solid oxide electrolysis cell(s) configured to produce hydrogen by solid oxide electrolysis of steam in thermoneutral or endothermal mode. By configuring the electrically driven air separation unit(s) and the solid oxide electrolysis cell(s) so that heat emanating from the one or more electrically driven air separation unit(s) is transferred to the one or more solid oxide electrolysis cell(s), nitrogen production may be integrated while enabling high current density, the use of large SOEC stacks and improved reactant conversion. In addition, ammonia production plants comprising the above system as well as related methods are described.

A method of ammonia synthesis is described that includes contacting a nitrogen gas-containing plasma with an aqueous solution, thereby forming ammonia from the nitrogen gas and water. The nitrogen gas-containing plasma is present in an electrochemical cell. The electrochemical cell includes a container including an acidic liquid electrolyte. The electrochemical cell also includes a source of nitrogen gas, a metal electrode at least partially immersed in the electrolyte, a metal tube electrode spaced apart from a surface of the electrolyte by a predetermined spacing. The electrochemical cell is configured to provide a plasma spanning the predetermined space from the metal tube electrode to contact the surface of the electrolyte when power is applied to the metal tube electrode.