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AssigneeInstitut Francais du Petrole
InventorsChristine Travers, Maryline Delage, Eric Benazzi, Jean-François Joly
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New catalysts that contain heteropolyanions of the 12-tungstophosphoric acid or the 12-tungstomolybdic acid, and, for some of these, at least one metal of group VIII, and that are deposited on substrates that develop a specific surface area and a high pore volume, such as zirconium oxide (ZrO2), silicas, silica-aluminas or aluminas, are used in particular in isomerization of paraffinic fractions that contain in large part n-paraffins that have, for example, 4 to 8 carbon atoms per molecule and in aliphatic alkylation of isoparaffins (for example isobutane and/or isopentane) by at least one olefin that comprises, for example, 2 to 6 carbon atoms per molecule (C2 to C6).
A catalyst that comprises at least one group VIII metal in a content of 0.05 to 10% by weight relative to the entire catalyst and heteropolyanions of 12-tungstophosphoric acid deposited on a zirconium oxide substrate having a specific surface area of 50 to 500 m2/g and a pore volume of 0.3 to 0.9 cm3/g, wherein the heteropolyanion content is 10 to 55% by weight relative to the entire catalyst.
A catalyst that comprises at least one group VIII metal in a content of 0.05 to 10% by weight relative to the entire catalyst and heteropolyanions of 12-tungstomolybdic acid deposited on a zirconium oxide substrate having a specific surface area of 50 to 500 m2/g and a pore volume of 0.3 to 0.9 cm3/g, wherein the heteropolyanion content is 10 to 55% by weight relative to the entire catalyst.
Dependencies are inferred from the claim text.