Institut Francais Du Pe'trole

Ifp Energies Nouvelles

Elf Antar France

Edmond Payen

Carole Lamonier

Pascal Blanchard

Michel Fournier

Virginie France Harle

Audrey Bonduelle

Franck Dumeignil

Karin Marchand

Loic Rouleau

Denis Guillaume

Fabrice Bertoncini

Karima Ben Tayeb

Sébastien Royer

Christine Lancelot

Catherine Martin

Anne Griboval

Jean-Luc DuBois

The invention describes a heteropolycompound constituted by a nickel salt of a lacunary Keggin type heteropolyanion comprising tungsten in its structure, with formula:NiAWO, zHOwherein Ni is nickel, A is selected from phosphorus, silicon and boron, W is tungsten, O is oxygen, y=0 or 2, x=3.5 if A is phosphorus, x=4 if A is silicon, x=4.5 if A is boron, and x=m/2+2 for the rest, and z is a number in the range 0 to 36, in which said heteropolycompound has no nickel atom in substitution for a tungsten atom in its structure, said nickel atoms being placed in the counter-ion position in the structure of said compound.

Lacunary Keggin type heteropolyanion based on tungsten for hydrocracking

A process for preparing a mesoporous alumina is described, comprising the following steps:

Process for preparing an alumina with controlled mesoporosity

A process is described for preparing a solution formed by at least one cobalt and/or nickel salt of at least one heteropolyanion combining molybdenum and cobalt or molybdenum and nickel in its structure, said process comprising:

Process for preparing at least one cobalt and/or nickel salt of at least one Anderson heterpolyanion combining molybdenum and cobalt or nickel in its structure

A catalyst contains at least one group VIII element and at least molybdenum and/or tungsten, said elements being present at least in part in the catalyst in the dry state in the form of at least one heteropolyanion with formula MABOHC, tHO; MABOHC, tHO; MABOHC, tHO; MABOHC, tHO; or MABOHC, tHO, in which M is cobalt and/or nickel and/or iron and/or copper and/or zinc, A is one or two elements from group VIII of the periodic table, B is molybdenum and/or tungsten and C is an Hion and/or a (NRRRR)type ammonium ion, in which R, R, Rand R, which may be identical or different, correspond either to a hydrogen atom or to an alkyl group and/or caesium and/or potassium and/or sodium, t is a number between 0 and 15 and x takes a value in the range 0 to 4 depending on the formula.

Catalyst based on a group VI metal and a group VIII metal at least partially present in the form of heteropolyanions in the oxide precursor

Process for preparing water-treatment catalysts

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Jenlain, France

Edmond Payen