METHOD OF SYNTHESIS OF AROMATIC HYDROCARBONS (VARIANTS) Russian patent published in 2002 - IPC

FIELD: organic chemistry, chemical technology, petroleum chemistry. SUBSTANCE: method of synthesis of aromatic hydrocarbons involves the conversion of a mixture of methane with at least one C₂-C₁₂-hydrocarbon in the volume ratio methane/hydrocarbon raw = 500, not above, at temperature 300-1000 C, under pressure 10 MPa, not above, in volume consumptions of hydrocarbon mixture 10000 h^-1, not above, in the presence of the porous catalyst. As a catalyst the following substances can be used: either zeolite of alumosilicate composition taken among the order: ZSM-5, ZSM-11, ZSM-35, ZSM-38, ZSM-48, BETA that has a mole ratio SiO₂/Al₂O₃ = 450, not above, or gallosilicate, galloalumosilicate, iron silicate, iron-alumosilicate, chrome silicate, chrome-alumosilicate of the structure ZSM-5, ZSM-11, ZSM-48, BETA or alumophosphate of the structure of type ALPO-5, ALPO-11, ALPO-31, ALPO-36, ALPO-37, ALPO-40 with elements incorporated in the structure on the stage of synthesis and taken among the order: magnesium, zinc, gallium, manganese, iron, silicon, cobalt, cadmium. Catalyst for all variant of the method can comprise additionally zinc, and/or gallium, and/or rare-earth elements, or metal of the platinum group taken in the amount 10 wt.%, not above. EFFECT: improved method of synthesis, enhanced yield of aromatic hydrocarbon. 15 cl, 23 ex