Patent ID: 7220885

Claim:
A process for preparing a transalkylation catalyst comprising contacting the catalyst comprising a rhenium component, a solid-acid component, and an optional binder, with a sulfur-based treating agent effective for decreasing yields of methane under transalkylation conditions to form a catalyst consisting essentially of a rhenium component, a solid-acid component, an optional binder, and a sulfur component wherein the catalyst mole ratio of sulfur to rhenium is about 0.3 to about 0.8 and wherein the solid-acid component is selected from the group consisting of: (A) mordenite having a SiO 2 /Al 2 O 3 ratio from about 20 to about 40, mazzite, zeolite beta, ZSM-12, ZSM-22, ZSM-23, EU-1, MAPO-36, MAPSO-31, SAPO-5, SAPO-11, SAPO-41, silica-alumina, mixtures thereof, (B) ZSM-11 in combination with at least one of mordenite having a SiO 2 /Al 2 O 3 ratio from about 20 to about 40, mazzite, zeolite beta, ZSM-12, ZSM-22, ZSM-23, EU-1, MAPO-36, MAPSO-31, SAPO-5, SAPO-11, SAPO-41, or silica-alumina and (C) MFI topology zeolite in combination with at least one of mordenite having a SiO 2 /Al 2 O 3 ratio from about 20 to about 40, mazzite, zeolite beta, ZSM-12, ZSM-22, ZSM-23, EU-1, MAPO-36, MAPSO-31, SAPO-5, SAPO-11, SAPO-41, or silica-alumina.