Patent ID: 8148590

Claim:
A process for producing aromatic hydrocarbons and hydrogen, in which a methane-containing feedstock gas is reformed by being supplied to and being brought into contact with a catalyst under high temperature conditions thereby forming aromatic hydrocarbons and hydrogen, the method comprising the steps of: supplying a hydrogen gas together with the methane-containing feedstock gas during supply of the feedstock gas, the hydrogen gas being supplied in an amount of larger than 2% and smaller than 10% by volume of the feedstock gas; suspending the supply of the feedstock gas for a certain period of time while continuing to supply the hydrogen gas in the amount of larger than 2% and smaller than 10% by volume of the feedstock gas; and, reforming the feedstock gas after being brought into contact with the catalyst under high temperature conditions to produce aromatic hydrocarbons and hydrogen, wherein the catalyst includes metallo-silicate carrying molybdenum and rhodium.