Of Antimony Or Bismuth Patents (Class 502/249)
  • Catalyst and process for oxidizing hydrogen sulfide
    Patent number: 4432961
    Abstract: Catalysts comprising bismuth and vanadium components are highly active and stable, especially in the presence of water vapor, for oxidizing hydrogen sulfide to sulfur or SO.sub.2. Such catalysts have been found to be especially active for the conversion of hydrogen sulfide to sulfur by reaction with oxygen or SO.sub.2.
    Type: Grant
    Filed: December 30, 1981
    Date of Patent: February 21, 1984
    Assignee: Union Oil Company of California
    Inventors: Robert H. Hass, John W. Ward
  • Impregnating catalysts
    Patent number: 4414134
    Abstract: An element selected from Groups IA, IB, IIB, IIIA and IIIB is incorporated into an iron bismuth molybdate oxide complex catalyst by impregnation.
    Type: Grant
    Filed: January 5, 1981
    Date of Patent: November 8, 1983
    Assignee: The Standard Oil Co.
    Inventors: Maria S. Friedrich, Dev D. Suresh, Robert K. Grasselli