Institut Francais Du Pe'trole

Centre National De La Recherche Scientifique

Ifp Energies Nouvelles

Institute Francais Du Petrole

Université Claude Bernard Lyon I

Jean-Pierre Candy

Blaise Didillon

Malika Boualleg

Jean-Marie Basset

Fabienne Le Peltier

Jean-Paul Boitiaux

Jean-Paul Bournonville

Patrick Sarrazin

Anne-Claire Dubreuil

Gil Mabilon

Cecile Thomazeau

Olivier Clause

Lars Fischer

Laurent Veyre

Layane Deghedi

Gregory Dard

Fatima Bentahar

Jean-Marie Bassett

Christine Lucas

A process is described for preparing a catalyst comprising at least one porous support and at least one metallic phase containing nickel and tin in a proportion such that the Sn/Ni molar ratio is in the range 0.01 to 0.2, said process comprising at least the following steps in succession:

Process for preparing a Ni/Sn supported catalyst for the selective hydrogenation of polyunsaturated hydrocarbons

Method for the elimination of metal ions from aqueous media, such as zinc, lead, chrome, copper, iron, aluminium, manganese, cadmium, cerium or silver and mixtures of the metals present in a trace or ultratrace state in aqueous effluents, by adsorption on a solid charge containing a metal chosen from group VIII.

Elimination of metal ions from aqueous effluents

In a process for preparing a catalyst comprising at least one support, at least one metal from group VIII of the periodic table and at least one additional element M selected from the group formed by germanium, tin, lead, rhenium, gallium, indium and thallium, metal M is introduced in an aqueous solvent in the form of at least one organometalic compound comprising at least one carbon-M bond.

Process for preparing catalysts for use in organic compound transformation reactions

The invention concerns a process for the selective hydrogenation of polyunsaturated cyclic compounds comprising at least one endocyclic carbon-carbon double bond and at least one terminal exocyclic carbon-carbon double bond, said double bonds not being conjugated, to form a mixture essentially containing the saturated ring compound and comprising at least one terminal exocyclic double bond, the process being carried out in the presence of hydrogen under a pressure of from 1 to 10 MPa and at a temperature of from 0.degree. to 200.degree. C., and in the presence of a catalyst including a support and (a) from 0.1 to 5% by weight of at least one metal from group VIII (iridium, osmium, nickel, palladium, platinum and rhodium) and (b) from 0.01 to 15% by weight of at least one metal from group IVa (tin, germanium and lead), the molar ratio between metals of group VIII and group IVa being between 0.3 and 3. The process is used for the hydrogenation of 4-vinylcylcohexene to vinylcyclohexane.

Process for the selective hydrogenation of compounds comprising endo and

The invention concerns the production of a substituted or unsubstituted aniline by selective hydrogenation of the corresponding nitroaromatic compound. It is characterized by the use of a catalyst based on a metal selected from rhodium and ruthenium and based on a metal selected from the group comprising tin, germanium and lead.

Catalytic reduction of substituted or unsubstituted nitroaromatic

The invention concerns the production of a diolefinic unsaturated alcohol such as geraniol or nerol by the selective hydrogenation of citral. It is characterized by the use of a catalyst based on a metal from group VIII and based on a metal selected from the group made up of tin, germanium and lead, on preferably a silica carrier.

Hydrogenation of citral

The invention has as an object the production of alcohols by hydrogenolysis of carboxylic acid esters, under hydrogen pressure, in the presence of a catalyst resulting from the incorporation of at least one compound of at least one metal from the group consisting of germanium, tin and lead to Raney nickel or to a nickel-containing carrier. The reaction is preferably conducted at a temperature from 180.degree. to 330.degree. C. and under a pressure from 1 to 10 MPa.

Process for producing alcohols by hydrogenolysis of carboxylic acid

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Caluire, France

Jean-Pierre Candy