Abstract: This invention is directed to systems, compositions, and methods of producing food.

Abstract: A metal-oxide perovskite material having a general formula Ca1-xCexTiyMn1-yO3, where x is in a range of about 0.3 to about 0.35 and y is in a range of about 0.25 to about 0.35. Producing hydrogen and oxygen includes heating the metal-oxide perovskite material; reducing the metal-oxide perovskite material to yield a reduced metal-oxide perovskite material; cooling the reduced metal-oxide perovskite material; and contacting the reduced metal-oxide perovskite material with a re-oxidizing fluid including steam to yield hydrogen and a re-oxidized metal-oxide perovskite material. Producing carbon monoxide and oxygen includes heating the metal-oxide perovskite material; reducing the metal-oxide perovskite material to yield a reduced metal-oxide perovskite material; cooling the reduced metal-oxide perovskite material, and contacting the reduced metal-oxide perovskite material with a re-oxidizing fluid including carbon dioxide to yield carbon monoxide and a re-oxidized metal-oxide perovskite material.

Abstract: Separating oxygen from a gas includes contacting an oxygen-selective sorbent with a gas stream, adsorbing oxygen in the gas stream with the sorbent, heating the sorbent to greater than 400° C., and desorbing a majority of the oxygen. The sorbent is selective for oxygen, and adsorbing occurs at a temperature between 275-325° C. An oxygen separation system includes a sorption bed, a heater configured to heat the sorption bed, an oxygen analyzer, a first conduit configured provide an input gas to the sorption bed, a second conduit configured to provide processed input gas from the sorption bed to the oxygen analyzer, a third conduit configured to provide a purge gas to the sorption bed, and a fourth conduit configured to provide processed purge gas to the oxygen analyzer. The first and third conduits are configured to flow the input gas and the purge gas flow in opposite directions through the sorption bed.

Abstract: A material for separating and pumping oxygen is disclosed. The material is a zeolite doped with a chemical element having an electron density of between 30 kJ/mol and 150 kJ/mol. The material is configured for controllable oxygen desorption between 150° C. and 300° C. and pumping the released oxygen into an area having an ambient pressure of less than 100 pascals.

Abstract: The present disclosure is directed to renewable pathways to nitrogen production and ammonia (NH3) synthesis that utilize renewable heat as process heat instead of fossil fuels and operates at low to medium pressures (from 0.2-3 MPa). The renewable pathways result in both a decrease or elimination of greenhouse gas emissions as well as avoid the cost, complexity and safety issues inherent in high-pressure processes. Renewable thermochemical looping technology is used that produces nitrogen from air for the subsequent production of ammonia via an advanced two-stage process.

Abstract: The present disclosure is directed to methods using durable functional materials for processes that include an oxidation step. The durable functional materials are redox active oxygen carrier materials that include a zirconia or yttria-stabilized-zirconia (YSZ) matrix containing a redox-active metal ion(s), such as, but not limited to Fe, Mn, Cu, Co and Cr. In an embodiment, these materials are used in chemical looping processes.