method for hydrodealkylierung aromatic alkylkohlenwasserstoffen in the presence of a trägerkatalysators

摘要

P the present invention relates to a process hydrodealkylation of alkyl aromatic hydrocarbons in the presence of a rhodium-based catalyst deposited on a support of the aluminate / p & & p & the catalyst of the process of the invention consists firstly of rhodium and optionally at least one metal chosen from platinum and palladium and, on the other hand, of a support constituted by at least partially by an aluminate of spinel structure and having the general formula mal2 o4, xal2 o 3, where x can vary between 0 and 200 and, where m is at least one metal selected from the group constituted by nickel, cobalt, copper, zinc, iron and magnesium. / p & & p & the process of the invention applies in particular to the hydrodealkylation toluene / p