Patent ID: 6548725
Filing Date: 2003-04-15
Classification: B01J,C07C,C10G,Y02P

Abstract:
A process for producing at least one light olefin and relatively less aromatic products, comprising: contacting at a temperature of 400Â° C. to 650Â° C. and a pressure of 1 to 3 atmospheres, a feedstock comprising a volatile hydrocarbon mixture which is liquid at room temperature and pressure in a reactor with a catalyst comprising a ZSM-5 zeolite catalyst which contains 0.1 to 10 weight percent phosphorus and 0.1 to 10 weight percent of a promoter metal which is gallium, based on the total weight of the catalyst, and the weight ratio of phosphorus to gallium is in the range of 1:1 to 5:1, under effective reaction conditions to produce at least one olefin having two to three carbon atoms per molecule.