No. ▲ II ▼ A, ▲ IV ▼ B, ▲ II ▼ their use in B or ▲ IV ▼ mordenite based catalyst and aromatic C ▲ under 8 ▼ fraction isomerization of including at least one metal of the A group

摘要

A mordenite-based catalyzer for the isomerization of an aromatic C8 fraction characterized in that said mordenite contains at least one a metal from the IIa, IVb, IIb or IVa groups and is such that: its global atomic ratio Si/Al is between 6 and 15, its sodium content by weight in relation to the dry mordenite weight is less than 2,000 ppm, its basic grain size volume is between 2,725 nm, its n-hexane adsorption capacity is above 0.065 cm3 liquid/gram, its isooctane adsorption capacity is less than 0.068 cm3 liquid/gram. The invention also concerns the preparation of mordenite by grafting on an H-shaped mordenite at least one organometallic composition of said metal.