The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 30, 2006
Filed:
Jan. 09, 2003
Michael James Baker, Feltham, GB;
John William Couves, High Wycombe, GB;
Kenneth George Griffin, Royston, GB;
Peter Johnston, Royston, GB;
James Colin Mcnicol, Pinner, GB;
George Frederick Salem, Naperville, IL (US);
Michael James Baker, Feltham, GB;
John William Couves, High Wycombe, GB;
Kenneth George Griffin, Royston, GB;
Peter Johnston, Royston, GB;
James Colin McNicol, Pinner, GB;
George Frederick Salem, Naperville, IL (US);
BP Chemicals Limited, London, GB;
Johnson Matthey Public Limited Company, London, GB;
Abstract
Process for preparing a supported metal catalyst composition comprising impregnating support particles having a mean diameter of greater than 300 microns with a solution of least one catalytically active metal, or precursor thereof, such that the metal, or its precursor, is in a mobile state in the support particles; and drying the impregnated support particles. The mobile metal, or its precursor, in the support particles is then treated 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 the support particle, the layer being between an inner and an outer region, each of the inner and outer regions having a lower concentration of the metal or precursor than the layer.