Catalyst of the gallosilicate type and its utilization for the aromatization of light C.sub.2 -C.sub.4 gases

摘要

A MFI-based gallosilicate type catalyst is described.P P The catalyst is characterized by the following composition expressed by weight:PPa) 0.1 to 99.49% of a matrix, PPb) 0.5 to 99.99% of a zeolite having the following approximate chemical formula:PPM.sub. 2/n O, Ga.sub.2 O. sub.3, xSiO.sub.2 PP whereinPPM represents a proton and/or a metallic cation,PPn is the valence of said cation, P Px is a number ranging from 12 to 1,00,PP the zeolite of MFI structure synthesized in a fluoride medium having a fluorine content ranging from 0.02 to 1.5% by weight incorporated during synthesis.PP The catalyst is notably used in aromatization reactions of light C.sub.2 -C.sub.4 gases in the presence or not of olefins.