A method for making oxygenates using a non-catalytic reaction, said method comprising the steps of: mixing a first stream of hydrocarbon gas with a second stream of gas including oxygen in a mixer; outputting a reactant stream from the mixer including the hydrocarbon gas of the first stream and the second stream of gas including oxygen; heating the reactant stream to a predetermined temperature of at least 300° C and a pressure of from 4.05 to 8.61 MPa (40 to 85 atm); inputting the heated reactant stream into a fluidized bed reactor and wherein the fluidized bed reactor includes a reaction chamber with a plurality of inert reactor particles in the reaction chamber; distributing the heated reactant stream into the reaction chamber of the fluidized bed reactor by sending the heated reactant stream through a distributor plate, fluidizing the inert reactor particles in the reaction chamber by feeding the heated reactant stream vertically through the reaction chamber and suspending the inert reactor particles in the reaction chamber of the fluidized bed reactor; oxidizing in the reaction chamber of the fluidized bed reactor the hydrocarbon gas in the heated reactant stream with the gas including oxygen in the heated reactant stream to produce oxygenates; maintaining the fluidized bed reactor at an isothermal condition of ± 10% of a desired operating temperature range of from 300 to 900° C and a desired operating pressure of 4.05 to 8.61 MPa (40 to 85 atm) to facilitate the production of the oxygenates; and outputting a product stream including the oxygenates, byproducts, and unreacted hydrocarbon gas from the fluidized bed reactor. mixing a first stream of hydrocarbon gas with a second stream of gas including oxygen in a mixer; outputting a reactant stream from the mixer including the hydrocarbon gas of the first stream and the second stream of gas including oxygen; heating the reactant stream to a predetermined temperature of at least 300° C and a pressure of from 4.05 to 8.61 MPa (40 to 85 atm); inputting the heated reactant stream into a fluidized bed reactor and wherein the fluidized bed reactor includes a reaction chamber with a plurality of inert reactor particles in the reaction chamber; distributing the heated reactant stream into the reaction chamber of the fluidized bed reactor by sending the heated reactant stream through a distributor plate, fluidizing the inert reactor particles in the reaction chamber by feeding the heated reactant stream vertically through the reaction chamber and suspending the inert reactor particles in the reaction chamber of the fluidized bed reactor; oxidizing in the reaction chamber of the fluidized bed reactor the hydrocarbon gas in the heated reactant stream with the gas including oxygen in the heated reactant stream to produce oxygenates; maintaining the fluidized bed reactor at an isothermal condition of ± 10% of a desired operating temperature range of from 300 to 900° C and a desired operating pressure of 4.05 to 8.61 MPa (40 to 85 atm) to facilitate the production of the oxygenates; and outputting a product stream including the oxygenates, byproducts, and unreacted hydrocarbon gas from the fluidized bed reactor.