A catalyst based on mordenite containing at least one metal of group viii and its use in the isomerization of a cross section, c8 aromatic

摘要

P the invention relates to an isomerization catalyst a c8 aromatic containing a mordenite and at least one metal from group viii of the periodic table of elements (such as pt or pd), characterized in that said mordenite is such that: - its atomic ratio si / al ratio of the framework is between 6 and 10,5, - its sodium content is less than 2000 ppm, - its volume of the elementary mesh is between 2,73 and 2,78 nm * * 3, - its capacity for adsorption of benzene is between 4 and 10% by weight relative to the weight of dry mordenite, - its capacity for adsorption of 1,3,5 trimethylbenzene, is between 0,5 and 2,5% by weight relative to the weight of dry mordenite. / p & & p & the invention also relates to the preparation of said mordenite. / p