METHOD FOR THE PRODUCTION OF TENSIDE-STABILIZED MONO AND BIMETAL COLLOIDS FROM METALS OF GROUP VIII AND Ib OF THE PERIODIC SYSTEM AS A CATALYST PRECURSOR, WHICH IS INSULATABLE AND HIGHER CONCENTRATED.

摘要

PCT No. PCT/EP95/04803 Sec. 371 Date Aug. 29, 1997 Sec. 102(e) Date Aug. 29, 1997 PCT Filed Dec. 7, 1995 PCT Pub. No. WO96/17685 PCT Pub. Date Jun. 13, 1996The invention relates to a process for producing tenside-stabilized colloids of mono- and bimetals of the group VIII and Ib of the periodic system which are isolable in the form of powder and which are soluble at a concentration of at least 10 mg atom of metal/l of water, from metal salts in the presence of strongly hydrophilic tensides with hydrotriorganoborates in THF, or with simple chemical reduction agents like hydrogen or alkali formate in water and alcohols, respectively. Furthermore, the subject matter of the invention is the use of tenside-stabilized colloids which are produced according to this process as precursor for supported catalysts for the selective cis-hydrogenation of C-C triple bonds, for the selective hydrogenation of functional groups at the aromatic nucleus, for the selective hydrogenation of benzene to cyclohexene, for the partial oxidation of the primary alcohol functionality in carbohydrates, as well as for use as a precursor for electrocatalysts in fuel cells.