Processes for Transalkylating Aromatic Hydrocarbons

A process for transalkylating aromatic hydrocarbon compounds, the process comprising:

• introducing a feed stream comprising the aromatic hydrocarbon compounds to a transalkylation zone;
• introducing a sulfur source to the transalkylation zone after 2 days on stream of a process cycle of the process, the sulfur source in an amount to provide more than 1 ppm-wt of sulfur based upon the mass of the feed stream;
• contacting the feed stream with a catalyst in the transalkylation zone under transalkylation conditions including the presence of sulfur;
• and
• producing a reaction product stream comprising benzene and xylene;
• wherein the catalyst comprises an aluminosilicate zeolite component having an MOR framework type, an MFI molecular sieve component having a Si/Al2 molar ratio of less than 80, an inorganic oxide binder, and a metal component comprising a metal selected from the group consisting of nickel, cobalt, molybdenum, tungsten, tin, germanium, lead, indium, platinum, palladium, and combinations thereof.