Patent ID: 6740228
Filing Date: 2004-05-25
Classification: B01J,C01B,C10G

Abstract:
A process for reforming a petroleum hydrocarbon feed stream comprising contacting the stream under reforming conditions with a catalyst which comprises a zeolite KL in which the Zeolite crystals are cylindrical and have an average cylinder wall length of 0.1 to 0.6 microns, and an average cylinder wall length:diameter ratio of less than 0.5 and have microscopically flat basal planes, said Zeolite being the crystallization product of a mixture comprising q moles of water, a divalent cation, said divalent cation present in said mixture and present at a level of up to 250 ppm, a source of m moles of K2O, a source of n moles of SiO2 and a source of p moles of AL2O3 where m:n is 0.2 to 0.35 and n:p is 15 to 160 and q:m is 45 to 70, which zeolite is further impregnated with a metal hydrogenation-dehydrogenation promotor, wherein the basal planes of said cylindrical crystals are flatter than the basal planes of crystals prepared from an otherwise identical synthesis mixture which is free of said divalent cation.