Solvay (Societe Anonyme)

Solvay Deutschland Gmbh

Universitéde Liége

Prayon Sa

Benoit Heinrichs

Jean-Paul Pirard

Jean-Paul Schoebrechts

Rene Pirard

Patrice Delhez

Carlos Alberto Paez

David Eskenazi

Dimitri Liquet

Cédric Calberg

Process for the preparation of a catalyst including a metal of group VIII and a metal of group Ib, according to which the mixture including the alkoxide precursor of an inorganic oxide and complexes including the metals of group VIII and Ib and difunctional complexing compounds including an electron-donor group and a hydrolysable group is hydrolysed in order to form a gel. Process for the conversion of chloroalkanes into alkenes containing less chlorine by means of hydrogen, using such a catalyst.

Process for the preparation of a catalyst and its use for the conversion

A process for preparing a supported catalyst comprising a transition metal selected from palladium, platinum, nickel, cobalt or copper on an aerogel support, which includes the steps of providing a mixture containing an alkoxide precursor of the aerogel, a chelate complex of the transition metal with a chelating agent having Si(OR).sub.3 anchor groups, and an organic solvent in which the chelate complex is soluble; hydrolyzing the mixture by admixing it with water to form a gel; and converting the gel under supercritical conditions into the transition metal aerogel-supported catalyst. The supported catalyst has an especially homogeneous distribution of the metal component and is suitable, for example, for use as a hydrogenation catalyst.

Transition metal aerogel-supported catalyst

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Liege, Belgium

Benoit Heinrichs