Patents by Inventor Bing Y. Zhao

Bing Y. Zhao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Catalyst and process for hydrogenation of unsaturated hydrocarbons
    Patent number: 4940687
    Abstract: Dienes and/or acetylene impurities in an olefin feed; in particular a propylene feed, may be selectively hydrogenated in a single stage by use of a catalyst of palladium supported on alumina which is substantially crystalline alpha alumina, wherein the average pore radius is 200-2000 .ANG., with at least 80% of the pores having a pore radius within the range of 100 to 3000 .ANG.. The surface acidity of the catalyst is generally from 0.002 to 0.05 millimole of pyridine absorbed per gram of catalyst. The active palladium surface area is from 20 to 200 m.sup.2 /g. The palladium is in the form of crystallines having an average size of at least 25 .ANG..
    Type: Grant
    Filed: August 5, 1988
    Date of Patent: July 10, 1990
    Assignees: Beijing Research Institute of Chemical Industry, Lummus Crest, Inc.
    Inventors: Xin X. Liu, Bing Y. Zhao, Herbert Riegel, Jo-Lung Chien
  • Novel catalyst and process for hydrogenation of unsaturated hydrocarbons
    Patent number: 4762956
    Abstract: Dienes and/or acetylene impurities in an olefin feed; in particular a propylene feed, may be selectively hydrogenated in a single stage by use of a catalyst of palladium supported on alumina which is substantially crystalline alpha alumina, wherein the average pore radius is 200-2000 .ANG., with a least 80% of the pores having a pore radius within the range of 100 to 3000 .ANG.. The surface acidity of the catalyst is generally from 0.002 to 0.05 millimole of pyridine absorbed per gram of catalyst. The active palladium surface area is from 20 to 200 m.sup.2 /g. The palladium is in the form of crystallines having an average size of at least 25 .ANG..
    Type: Grant
    Filed: April 30, 1986
    Date of Patent: August 9, 1988
    Assignee: Beijing Research Institute of Chemical Industry He Ping Li
    Inventors: Xin X. Liu, Bing Y. Zhao, Herbert Riegel, Jo-Lung Chien