A system and method for improving the quality of a raw gas or raw syngas passes the raw gas or raw syngas past a catalytic element comprising catalyst with an optional sorbent. A downstream measurement of one or more parameters of the improved gas is fed back to a controller configured to regulate the regeneration of the catalyst and optional sorbent and, optionally, the flow rate of the regeneration fluid to the catalytic element. The system and method are particularly suitable for improving raw syngas generated from a carbonaceous material in a fixed bed or fluidized-bed or entrained-flow gasifier. One or more undesirable syngas constituents are subject to one or more of catalytic cracking, reforming, partial oxidation and/or decomposition to promote their conversion into desirable syngas constituents. At least one catalytic element is regenerated in situ, either periodically, continuously, or in a combination of these two modes.

An interconnected set of two or more stages of reactors to form a bio-reforming reactor that generates syngas for a number of different liquid fuel or chemical processes is discussed. A first stage includes a circulating fluidized bed reactor that is configured to cause a chemical devolatilization of the biomass into its reaction products of constituent gases, tars, chars, and other components, which exit through a reactor output from the first stage. A second stage of the bio-reforming reactor has an input configured to receive a stream of some of the reaction products that includes the constituent gases and at least some of the tars as raw syngas, and then chemically reacts the raw syngas within a vessel of the second stage to make the raw syngas from the first stage into a chemical grade syngas by further cracking the tars, excess methane, or both.

Compositions and methods for the catalysis of methane pyrolysis. Compositions include a catalyst that includes a medium entropy alloy particle. Methods include catalyzing the pyrolysis of methane using the catalyst.

Compositions and methods for the catalysis of methane pyrolysis. Compositions include a catalyst system that includes a medium entropy alloy particle and a support. Methods include catalyzing the pyrolysis of methane using the catalyst system.

Systems and methods to integrate product stabilization directly into the plasma conversion system are provided herein. The system includes a catalyst bed located downstream of the plasma reactor. The plasma reactor produces saturated and unsaturated hydrocarbons and hydrogen. The plasma effluent flows directly into a catalyst bed containing catalyst, which helps to provide process stability for species in the plasma effluent while they retain plasma-induced activation. The hydrogenation efficiency is controlled mostly by the catalyst bed temperature and space velocity. The stabilized product is sent to a separator unit where the liquid and gas products are separated for further processing.