Isomerisation catalysts for hydrocarbons - contg platinum group metal, halogen and metal halide and rhenium or germanium cpds

摘要

The catalysts consists of (A) an alumina carrier, (B) a Pt gp. metal (C) a halogen, (D) a Friedel-Crafts metal halide and (E) a Re or Ge component, the Ge being in an oxidn. stage higher than elementary Ge. Content of Re is pref. 0.01-1 wt % or of Ge pref 0.01-5 wt %, pref. in the form of GeO2. Amount of (B) is pref 0.01-1% and of (C) 0.1-5% (D) is pref. present in amt. of 1-100 wt% of the remaining catalyst. The catalyst may be pre-sulphided to a S content of 0.05-0.5 wt %. They are suitable for isomerisation of olefines, paraffins, cycloparaffins and/or alkyl aromatics, in presence of H2 e.g. in prodn of p-xylene or high octane petrols.