new catalyst for the isomerisation of linear olefins to branched olefins and its use, especially for the isomerisation of n - buten to isobutane

摘要

Catalyst for isomerising linear olefins to branched olefins, especially n-butenes to isobutene, comprising at least one porous refractory metal oxide chosen from the group consisting of alumina, silica, silica alumina, zirconia and titanium oxide, at the surface of which at least one halogen and bismuth are present. According to the invention this catalyst contains less than 1 % by weight of bismuth and between 0.01 and 2 % by weight of chlorine respectively. IMAGE