TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The molecular sieve has an intermediate pore size. The molecular sieve has a structure such as MFI, MEL, MTW, EUO, MTT, HEU, FER, MFS, or TON, preferably MFI. The molecular sieve is ZSM-5, ZSM-12, ZSM-22, ZSM-23, ZSM-34, ZSM-35, ZSM-38, ZSM-48, ZSM-50, or ZSM-57, preferably ZSM-5 or ZSM-12. The hydrogenation metal is platinum and/or preferably rhenium. The hydrogenation metal is incorporated with the molecular sieve by ion exchange. The catalyst further comprises a binder such as silica or alumina and a selectivating agent to enhance the paraselectivity of the catalyst. The selectivating agent is phosphorus, alkaline earth metal oxide, boron oxide, titania, antimony oxide, silica, manganese oxide, or coke.Preferred Parameters: The conditions include a pressure of greater than or equal to700 (preferably 1400) kPa, a temperature of greater than or equal to316 (preferably 427)degreesC, and a time of greater than or equal to4 (preferably greater than or equal to10) hours.Preferred Composition: The catalyst contains 0.03-3 wt.% hydrogenation metal. It further comprises a binder.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The molecular sieve has an intermediate pore size. The molecular sieve has a structure such as MFI, MEL, MTW, EUO, MTT, HEU, FER, MFS, or TON, preferably MFI. The molecular sieve is ZSM-5, ZSM-12, ZSM-22, ZSM-23, ZSM-34, ZSM-35, ZSM-38, ZSM-48, ZSM-50, or ZSM-57, preferably ZSM-5 or ZSM-12. The hydrogenation metal is platinum and/or preferably rhenium. The hydrogenation metal is incorporated with the molecular sieve by ion exchange. The catalyst further comprises a binder such as silica or alumina and a selectivating agent to enhance the paraselectivity of the catalyst. The selectivating agent is phosphorus, alkaline earth metal oxide, boron oxide, titania, antimony oxide, silica, manganese oxide, or coke.Preferred Parameters: The conditions include a pressure of greater than or equal to700 (preferably 1400) kPa, a temperature of greater than or equal to316 (preferably 427)degreesC, and a time of greater than or equal to4 (preferably greater than or equal to10) hours.Preferred Composition: The catalyst contains 0.03-3 wt.% hydrogenation metal. It further comprises a binder. EXAMPLE - Catalysts were hydrogen treated and tested in the dealkylation of ethylbenzene. The catalyst used in Test A, Test B and Test C comprised ZSM-5 and 0.5 weight percent of rhenium. The hydrogen treatment conditions of Test A included heating up in hydrogen at 121-399degreesC for 6 hours; the hydrogen treatment condition of Test B included heating up in hydrogen at 121-393degreesC for 6 hours, and soaking at 393degreesC for 5 hours; and hydrogen treatment condition of Test C included heating up in hydrogen at 121-393degreesC over 6 hours, soaking at 393degreesC for 5 hours, and soaking at 427degreesC for 16 hours. The conditions used in the ethylbenzene dealkylation were hydrogen to feed ratio of 1, and hydrogen partial pressure of 120 psia. Ethylbenzene conversion was from 75-85%. Test results showed that the hydrogen pretreatments reduced the amount of de-edging time, improved the product benzene purity, reduced aromatic ring loss and reduced the hydrogenolysis of 2-5C gases to methane.