Abstract: Disclosed is a process to prepare a [MnNaW]On/SiO2 catalyst using manganese oxide (MnO2) and tungsten oxide (WO3) nanostructures. Also disclosed are methods and systems using the aforementioned catalyst having higher methane conversion and C2 to C4 selectivity compared to similar catalysts not prepared with MnO2 and WO3 nanostructures.

Abstract: A method for producing ethylbenzene (EB) comprising introducing to an oxidative coupling of methane (OCM) reactor an OCM reactant mixture comprising CH4 and O2; allowing the OCM reactant mixture to react via OCM reaction to form an OCM product mixture comprising C2H4, C2H6, water, CO, CO2 and unreacted methane; separating the water and optionally CO and/or CO2 from the OCM product mixture to yield an EB reactant mixture comprising C2H4, C2H6, unreacted methane, and optionally CO and/or CO2; (d) introducing benzene and an EB reactant mixture to an EB reactor; allowing benzene to react in a liquid phase with the ethylene of the EB reactant mixture to form EB; recovering from the EB reactor an EB product mixture comprising EB and unreacted benzene, and an unreacted alkanes mixture comprising C2H6 and unreacted methane, and optionally CO and/or CO2; and optionally recycling the unreacted alkanes mixture to the OCM reactor.

Abstract: A method for producing olefins and methanol comprising introducing a first reactant mixture comprising CH4 and O2 to a first reaction zone; allowing the first reactant mixture to react via an OCM reaction to form a first product mixture characterized by a first H2/CO molar ratio; introducing a second reactant mixture comprising the first product mixture and an ethane stream to a second reaction zone, wherein ethane of the second reactant mixture undergoes a cracking reaction to produce ethylene; recovering a second product mixture from the second reaction zone, wherein the second product mixture is characterized by a second H2/CO molar ratio, and wherein the second H2/CO molar ratio is greater than the first H2/CO molar ratio; recovering from the second product mixture a methanol production feed stream comprising methane, H2 and CO; and introducing the methanol production feed stream to a third reaction zone to produce methanol.

Abstract: A method for producing C2 hydrocarbons comprising (a) introducing a reactant mixture to a reactor comprising a catalyst, wherein the reactant mixture comprises CH4, O2 and a heavy diluent, and wherein the reactant mixture is characterized by a bulk CH4/O2 molar ratio; (b) allowing the reactant mixture to contact a surface of the catalyst and react via an oxidative coupling of CH4 (OCM) reaction to form a product mixture, wherein the reactant mixture is characterized by a local CH4/O2 molar ratio on the catalyst surface, wherein the local CH4/O2 molar ratio is greater than the bulk CH4/O2 molar ratio, wherein the product mixture comprises C2 hydrocarbons, and wherein a selectivity to C2 hydrocarbons is increased by at least about 1% when compared to a selectivity of an otherwise similar OCM reaction conducted in the absence of the heavy diluent; and (c) recovering the product mixture from the reactor.

Abstract: An oxidative coupling of methane (OCM) catalyst composition comprising one or more oxides doped with Ag; wherein one or more oxides comprises a single metal oxide, mixtures of single metal oxides, a mixed metal oxide, mixtures of mixed metal oxides, or combinations thereof; and wherein one or more oxides is not La2O3 alone. A method of making an OCM catalyst composition comprising calcining one or more oxides and/or oxide precursors to form one or more calcined oxides, wherein the one or more oxides comprises a single metal oxide, mixtures of single metal oxides, a mixed metal oxide, mixtures of mixed metal oxides, or combinations thereof, wherein the one or more oxides is not La2O3 alone, and wherein the oxide precursors comprise oxides, nitrates, carbonates, hydroxides, or combinations thereof; doping the one or more calcined oxides with Ag to form the OCM catalyst composition; and thermally treating the OCM catalyst composition.

Abstract: A method for producing olefins comprising (a) introducing to an isothermal reactor a reactant mixture comprising CH4 and O2, wherein the reactor comprises a catalyst bed comprising a catalyst, wherein a catalyst bed temperature is 750-1,000° C., and wherein the reactor has a residence time of 1-100 ms; (b) wherein isothermal conditions minimize hot spots in the bed, thereby decreasing deep oxidation reactions; (c) allowing the reactant mixture to contact the catalyst and react via oxidative coupling of CH4 reaction to form a product mixture comprising C2+ hydrocarbons (olefins and paraffins; C2 hydrocarbons and C3 hydrocarbons) and synthesis gas (H2 and CO), wherein the product mixture has an olefin/paraffin molar ratio of from 0.5:1 to 20:1, and wherein the product mixture has a H2/CO molar ratio of from 0.2:1 to 2.5:1; (d) recovering the product mixture from the reactor; and (e) recovering C2 hydrocarbons and/or synthesis gas from the product mixture.

Abstract: A method for producing olefins and synthesis gas comprising (a) introducing a reactant mixture to a reactor, wherein the reactant mixture comprises methane (CH4) and oxygen (O2), wherein the reactor is characterized by a reaction temperature of from about 700° C. to about 1,100° C.; (b) allowing at least a portion of the reactant mixture to react via an oxidative coupling of CH4 reaction to form a product mixture, wherein the product mixture comprises primary products and unreacted methane, wherein the primary products comprise C2+ hydrocarbons and synthesis gas, wherein the C2+ hydrocarbons comprise olefins, and wherein a selectivity to primary products is from about 70% to about 99%; and (c) recovering at least a portion of the product mixture from the reactor.