A catalyst for the alkylation of a c4 - c5 isoparaffin at least one c2 - c6 olefin

摘要

The present invention relates to a catalyst comprising an organic or mineral porous support, preferably silica, and a phase acid containing the compound b (oso2 cf3) 3 and at least one acid chosen from the group formed by the sulfuric acid (h2) and so4 trifluoromethanesulfonic acid (cf3 so3 h), said support has been impregnated with the acid phase, the catalyst being such that it is essentially constituted of particles of average diameter ranging from 0,1 and 150 μm, the said catalyst is characterized in that the acid phase comprises: & br / - from 0,1 and 70% by weight of compound b (oso2 cf3) 3; & br / - between 0 and 90% by weight of h2 so4; & br / - between 0 and 90% by weight of cf3 so3 h. & br / the invention also concerns the preparation and the use of the catalyst in a catalytic alkylation of isobutane and / or isopentane in the presence of at least one olefin containing from 2 to 6 carbon atoms per molecule, preferably 3 to 6 carbon atoms per molecule.