Co2 hydrogenation in reverse flow reactors

A method for performing a reaction in a reverse flow reactor, comprising:

• reacting a fuel mixture comprising fuel, 0.1 vol % or more of O2, and a diluent under combustion conditions in a combustion zone within a reverse flow reactor to form a flue gas and to heat a conversion zone to an average conversion zone temperature of 400° C. or more, the conversion zone comprising a catalyst composition;
• and
• exposing a reactant stream comprising 5.0 vol % to 50 vol % CO2, 20 vol % or more H2, and a ratio of H2 to CO2 of 2.0 or more, to the catalyst composition in the conversion zone under reverse water gas shift reaction conditions to form a product stream comprising H2O and CO, a direction of flow for the reactant stream within the reaction zone being reversed relative to a direction of flow for the fuel mixture.