Patents Represented by Attorney S. M. Targer

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  • Method for preparing maleic anhydride
    Patent number: 4111963
    Abstract: The productivity of phosphorus-vanadium-oxygen catalysts useful for converting saturated hydrocarbons containing from 4 to 10 carbon atoms to maleic anhydride can be increased by the order of preparatory steps used to prepare such catalysts. Phosphorus-vanadium-oxygen catalysts are prepared by mixing phosphorus and vanadium compounds to form precursors, shaping precursors and then calcining the precursors to form the catalysts. The catalysts are particularly beneficial for the conversion of butane to maleic anhydride.
    Type: Grant
    Filed: December 12, 1975
    Date of Patent: September 5, 1978
    Assignee: Monsanto Company
    Inventors: Ramon A. Mount, Harold Raffelson