Patents Examined by William C. Wright
  • Process for preparing a vanadium phosphorus oxygen catalyst composition by an organic solution method
    Patent number: 4569925
    Abstract: A process for preparing a vanadium, phosphorus oxygen containing catalyst composition capable of partially oxidizing hydrocarbons (e.g., n-butane) to form a carboxylic anhydride (e.g., maleic anhydride), and a process for using this catalyst to form such anhydrides is disclosed. The catalyst composition is prepared by an organic solution technique followed by activation in an air-hydrocarbon atmosphere.
    Type: Grant
    Filed: July 1, 1982
    Date of Patent: February 11, 1986
    Assignee: Exxon Research & Engineering Co.
    Inventors: Tai-Cheng Yang, Krishna K. Rao, I-Der Huang