Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Ulrich Schubert

Helmut Schmidt

Boris Breitscheidel

Klaus Rose

Sabine Amberg-Schwab

The conversion of CO/H.sub.2 O mixtures, in particular water gas, is carr out in the presence of solid, polymer rhodium complex catalysts which are insoluble in aqueous and organic solvents and are obtainable by polycondensation of one or more rhodium complexes having at least one ligand which contains at least one group capable of coordinating to rhodium and at least one group forming an inorganic network in the polycondensation, either with itself or with one or more inorganic network-forming agents capable of undergoing polycondensation. Novel rhodium complexes of this type are also described.

Process and catalyst for the conversion of CO/H.sub.2 O mixtures

Composite materials which contain small particles of metal or metal oxide an oxide matrix are prepared by a process which comprises a) subjecting (1) one or more metal compounds and (2) one or more bifunctional compounds which contain at least one group capable of complexing the metal and at least one group which forms an inorganic network during the polycondensation, and if appropriate (3) one or more network-forming agents which are capable of polycondensation to the conditions of a complexing reaction and hydrolytic polycondensation by the sol-gel process in a liquid reaction medium, compounds (1), (2) and (3) being soluble in the reaction medium, and b) oxidizing the resulting polycondensate to form a composite material which contains small metal oxide particles with the very narrow particle size distribution in an oxide matrix, and if appropriate c) reducing the metal oxide particles of the resulting composite material to the metal. These composite materials are used as catalysts and in electrical or electronic components.

Growing community of inventors

Wurzburg, Germany

Ulrich Schubert