TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The method further comprises: removing contaminants from the natural gas stream; separating some carbon dioxide from the reactive product stream; conveying at least a portion of the hydrogen to a fuel cell or turbine, providing oxygen to the fuel cell or turbine, and reacting the hydrogen with the oxygen in the fuel cell or burning the hydrogen with the oxygen in the turbine to produce electricity; heating water produced in the fuel cell using the heat produced in the fuel cell to form steam, and generating electricity from the steam; conveying at least a portion of the hydrogen back to the reactor such that the hydrogen comprises all or part of the burn stream; conveying at least a portion of the hydrogen to the hydrogenation reactor; providing hydrogen to the hydrogenation reactor; separating a gas or vapor from the hydrocarbon liquid and recirculating a portion of the gas or vapor to the reactor; separating a gas or vapor from the hydrocarbon liquid and recirculating a portion of the gas or vapor to the catalytic liquefaction reactor; separating a gas or vapor from the hydrocarbon liquid and using at least a portion of the gas or vapor stream to at least partially quench the reactive product stream; separating a liquid stream from the hydrocarbon liquid, and using at least a portion of the liquid stream to at least partially quench the reactive product stream; and separating at least a portion of the hydrogen from the hydrocarbon liquid; passing at least a portion of the hydrogen back to the reactor such that the hydrogen comprises all or part of the burn stream. The method further comprises: introducing nitrogen to the reactor; heating the nitrogen prior to its introduction to the reactor by a device of electric arc, resistance heater, plasma generator, fuel cell, combustion heater and/or heat exchanger; introducing steam, water, or both to the reactor; heating the steam, water, or both prior to introduction to the reactor by the device; introducing carbon dioxide to the reactor; separating hydrogen from at least a portion of the light gas stream; using a portion of the hydrogen to generate electricity directly or indirectly; conveying at least a portion of the hydrogen to the reactor; conveying at least a portion of the hydrogen to the hydrogenation reactor; conveying a portion of the light gas stream from which some hydrogen has been removed to the reactor; separating at least some carbon dioxide from at least a portion of the light gas stream from which some hydrogen has been removed; separating a gas or vapor from the process and using the gas or vapor as fuel; separating a gas or vapor from the process and using the gas or vapor to generate electricity; separating a liquid or slurry from the process and using the liquid or slurry as fuel; recirculating a portion of the light gas stream to the reactor; separating at least some carbon dioxide from at least a portion of the light gas stream; conveying a portion of the light gas stream from which some carbon dioxide has been removed to the reactor; separating at least some ethylene from at least a portion of the light gas stream; conveying a portion of the ethylene to the catalytic liquefaction reactor; conveying a portion of the light gas stream from which some ethylene has been removed to the reactor; conveying a portion of the ethylene to storage or to further processing outside the process; separating at least some carbon dioxide from at least a portion of the light gas stream from which some ethylene has been removed; conveying a portion of the ethylene produced in the hydrogenation reactor to storage or to further processing outside the process; separating at least some hydrogen from the hydrogenation reactor effluent; separating hydrogen from the process and using a portion of the hydrogen for one or more purposes comprising recirculating back to the reactor, conveying to the hydrogenation reactor, generating electricity directly or indirectly, burning as fuel, and exporting from the process for external use; and separating hydrogen from one or more sources within the process of a portion of the reactive product stream, a portion of the light gas stream, a portion of the light gas stream after some ethylene has been removed, a portion of the light gas stream after some carbon dioxide has been removed, a portion of the light gas stream after some ethylene and carbon dioxide have been removed, a portion of the hydrogenation reactor effluent, and the hydrocarbon liquid. The method further comprises: separating a gas or vapor from the process and using the gas or vapor to generate electricity; separating a liquid or slurry from the process and using the liquid or slurry as fuel; recirculating a portion of the light gas stream to the reactor; separating at least some carbon dioxide from at least a portion of the light gas stream; conveying a portion of the light gas stream from which some carbon dioxide has been removed to the reactor; separating at least some ethylene from at least a portion of the light gas stream; conveying a portion of the ethylene to the catalytic liquefaction reactor; conveying a portion of the light gas stream from which some ethylene has been removed to the reactor; conveying a portion of the ethylene to storage or to further processing outside the process; separating at least some carbon dioxide from at least a portion of the light gas stream from which some ethylene has been removed; conveying a portion of the ethylene produced in the hydrogenation reactor to storage or to further processing outside the process; separating at least some hydrogen from the hydrogenation reactor effluent; separating hydrogen from the process and using a portion of the hydrogen for one or more purposes of recirculating back to the reactor, conveying to the hydrogenation reactor, generating electricity directly or indirectly, burning as fuel, and exporting from the process for external use; separating hydrogen from one or more sources within the process of a portion of the reactive product stream, a portion of the light gas stream; a portion of the light gas stream after some ethylene has been removed, a portion of the light gas stream after some carbon dioxide has been removed, a portion of the light gas stream after some ethylene and carbon dioxide have been removed, a portion of the hydrogenation reactor effluent, and the hydrocarbon liquid. The natural gas, feed, burn, and oxidant streams is or are preheated using a device of electric arc, resistance heater, plasma generator, fuel cell, combustion heater and/or heat exchanger. The pressure of the natural gas stream is 1-20 bar. The feed stream, burn stream, oxidant and natural gas stream each is preheated to a temperature of 400-1800K. The feed stream is maintained at a temperature of at least 400K for 0.1-100 milliseconds, preferably 0.2-10 milliseconds. The temperature in the catalytic liquefaction reactor is operated at a temperature of 300-1000K. The reactive product stream is quenched using a device of a Joule-Thompson expander, nozzle, turbo expander, water spray, hydrocarbon spray, oil spray, steam, boiler and/or heat exchanger. The reactive product stream is quenched at least partially by mixing the reactive product stream with vapor or liquid hydrocarbons. Preferred Components: The burn stream comprises: a portion of the natural gas stream; and hydrogen. The fuel cell or turbine also produces heat. The catalytic liquefaction reactor comprises an acid catalyst. The oxidant comprises oxygen. The hydrocarbon liquid comprises naphtha or gasoline. The carbon dioxide is obtained in whole or in part from a stream in the process containing carbon dioxide.