Patent ID: 6528453
Filing Date: 2003-03-04
Classification: B01J,C07C

Abstract:
A process for preparing a supported metal catalyst composition which process comprises impregnating microspheroidal support particles with a solution of at least one catalytically active metal, or precursor thereof, such that the metal, or its precursor, is in a mobile state in the support particles, drying the impregnated support particles and then treating the mobile metal, or precursor, in the support particles with a liquid comprising at least one reducing agent to deposit and immobilize the metal, or its precursor, in the support particles such that the metal, or its precursor, is distributed in the support particle in a layer below the surface of said support particle, said layer being between an inner and an outer region, each of said inner and outer regions having a lower concentration of said metal or precursor than said layer.