CATALYST FOR AROMATIZATION OF LOWER HYDROCARBONS AND PROCESS FOR PRODUCTION OF AROMATIC COMPOUNDS

摘要

A catalyst for the aromatization of lower hydrocarbons which is improved in the life stability of activity on the conversion of methane, formation rate of benzene, formation rate of naphthalene, and total formation rate of benzene, toluene and xylene, prepared by making molybdenum and copper supported on a carrier metallosilicate and then firing the obtained intermediate. The production of aromatic compounds can be conducted by bringing a reactant gas containing a lower hydrocarbon and carbon dioxide into contact with the catalyst. The catalyst is prepared preferably by modifying a zeolite consisting of a metallosilicate with a silane compound which has a molecular size larger than the pore size of the zeolite and bears both an amino group selectively reactive with a Brfnsted acid site of the zeolite and a linear hydrocarbon group and then making molybdenum and copper supported on the modified zeolite. It is preferable that the amount of molybdenum supported on the carrier be 2 to 12wt% based on the whole catalyst after firing, while the Cu:Mo mole ratio (=X:1) be 0.01 to 0.8.