Patents Assigned to Rhodial Chimie
  • Method for treating exhaust gas of internal combustion engines functioning with sulphur-containing fuel
    Patent number: 6355220
    Abstract: The present invention relates to a process for the treatment of exhaust gases from internal combustion engines operating with a fuel containing sulphur. This process is characterized in that use is made, as catalyst, of a composition based on a cerium oxide and on a zirconium oxide, in a cerium/zirconium atomic proportion of at least 1, and on at least one oxide chosen from yttrium, lanthanum and praseodymium oxide and which exhibits a specific surface, after calcination for 6 hours at 900 ° C., of at least 35 m2/g.
    Type: Grant
    Filed: February 2, 2000
    Date of Patent: March 12, 2002
    Assignee: Rhodial Chimie
    Inventors: Gilbert Blanchard, Valérie Visciglio