Crystalline gallosilicates, a process for producing them and their use as catalysts.

摘要

This invention reates to crystalline gallosilicates having the following composition in terms of the mole ratios of the oxides:
0.9 ± 0.25M₂/_nO : GA₂0₃ : xSi0₂ : yH₂O.zQ wherein M is at least one cation having a valence n, x is at least 10, y/x is from 0 to 30, Q is a template used in the synthesis of the gallosilicate and z/x is 0-20, wherein the gallosilicate in the organic free hydrogen-form has an X-ray diffraction pattern substantially as set forth in Table A of this specification. The gallosilicates may be used, whether or not impregnated and/or ion-exchanged, admixed, supported or bound, for catalysing a reaction selected from alkylation, dealkylation, dehydrocyclodimerisation, aromatisation, transalkylation, isomerisation, dehydrogenation, hydrogenation, cracking, hydrocracking, cyclisation, oligomerisation, polymerisation, conversion of carbon monoxide/hydrogen mixtures to hydrocarbons and dehydration reactions.