Loading patent…
AssigneeInstitut Francais du Petrole
InventorsEric Benazzi, Jean Francois Joly, Frederic Chaigne, Jean Yves Bernhard, Christian Marcilly
Estimating the term…
The present invention relates to a catalyst comprising silica and an acid phase comprising sulphuric acid and the compound HB(HSO.sub.4).sub.4, the silica having been impregnated by said acid phase, said catalyst being such that is consists essentially of particles of an average diameter of between 0.1 and 150 .mu.m, its content by weight of acid phase is greater than 40%, the silica, prior to its impregnation with said acid phase, has a total porous volume of between 0.5 and 6 cm.sup.3 per gram and said acid phase contains between 0.4% and 68.8% by weight of the compound HB(HSO.sub.4).sub.4, said acid phase containing neither sulphuric anhydride nor boric acid. The invention also relates to the preparation and use of said catalyst in catalytic alkylation of isobutane and/or isopentane in the presence of at least one olefin containing 3 to 6 carbon atoms per molecule.
A catalyst containing silica and an acid phase comprising sulphuric acid and HB(HSO.sub.4).sub.4, the silica having been impregnated with said acid phase and said catalyst being such that it consists essentially of particles with an average diameter of 0.1 to 150 .mu.m, the silica, prior to its impregnation with said acid phase, has a total porous volume of 1.5 to 6 cm.sup.3 per gram, said acid phase contains 0.4% to 68.8% of HB(HSO.sub.4).sub.4 and 31.2% to 99.6% of H.sub.2 SO.sub.4, and said acid phase not containing sulphuric anhydride or boric acid.
Dependencies are inferred from the claim text.