TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The metal oxygen cataloreactant is zeolites, doped zeolites, metal oxides, mixed metal oxides or metal oxide-impregnated zeolites. The cataloreactant is regenerated with air or oxygen.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The reactant hydrocarbon comprises methane. The synthesis of the product hydrocarbon is carried out in a zone reactor. The halogenating agent comprises alkyl halide, solid halide, hydrogen halide or molecular halogen, which is bromine. The halogenated hydrocarbon is brominated hydrocarbon. Preferred Method: The method of making a hydrocarbon comprises: (a) forming an alkyl halide by allowing methane to react with molecular bromine, at 20-900 degrees C, a pressure of 0.1-200 atm, and a methane-to-bromine ratio of 1:10-1:100 by volume; (b) forming a product hydrocarbon having a carbon number Cn, where n is greater than equal to 2, by allowing the alkyl bromide to contact a doped zeolite; (c) recovering the product hydrocarbon; and (d) regenerating the doped zeolite with air or oxygen, where the steps (a)-(d) occur in a zone reactor. EXAMPLE - A stream of bromine and methane was passed through a small diameter bromination reactor at 450 degrees C and the mixture of bromomethane compound (CH4-xBrx) (where x is 0-3) passed into a reactor containing 5 g of metal oxide/zeolite composite (400 degrees C). The output stream from the second reactor contained no brominated products. Based on the methane consumed in the bromination reactor, ethylene (10%), propylene (31%), propane (3%), and butanes/butenes (1%) were detected, 65% overall. Trace amounts of C6 species were also detected. After reaction for 5 hours, during which the stream output did not change from the distribution, the methane stream was discontinued and the reactor was purged with helium at 5 cc/minutes for 10 minutes. After helium purge, a flow of oxygen (2 cc/minutes) into the second reactor was initiated at 525 degrees C to regenerate the metal oxide from the metal bromide of the partially spent composite. Initially only water and carbon dioxide were observed as products, but abruptly the stream contents changed to bromine and unreacted oxygen. After 1 hour, the oxygen purge was discontinued and the reactor was again purged with helium. A second cycle of bromomethanes condensation was initiated at 400 degrees C to give hydrocarbons.