Patents by Inventor Dan A. Fracasiu

Dan A. Fracasiu 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).

  • Liquid catalyst for hydrocarbon conversion reactions
    Patent number: 4677090
    Abstract: A liquid catalyst for hydrocarbon conversion reactions and a method for reacting hydrocarbons employing such catalyst is provided by the present invention. The liquid catalyst includes a strong liquid acid such as sulfuric acid or trifluoromethanesulfonic acid and an ion-stabilizing agent such as hexafluoroisopropanol or trifluoroacetic acid. The liquid catalyst has a significantly higher Bronsted acidity than the strong liquid Bronsted acid alone. When the liquid catalyst is used to catalyze the transalkylation of alkylbenzene, for example, the rate of transalkylation is from 2 to 3 times greater than using the strong liquid acid alone.
    Type: Grant
    Filed: January 13, 1986
    Date of Patent: June 30, 1987
    Assignee: Exxon Research and Engineering Company
    Inventor: Dan A. Fracasiu