Patents by Inventor Eugene W. Cotten, Jr.

Eugene W. Cotten, Jr. 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).

  • Toluene disproportionation process
    Patent number: 4723049
    Abstract: A process for the disproportionation of a toluene containing feedstock over an aluminum deficient mordenite catalyst having a silica/alumina mole ratio of at least 30. The feedstock and hydrogen co-feed are supplied to a reaction zone containing the mordenite catalyst and which is operated under a temperature and pressure condition to effect the disproportionation of toluene to benzene and xylene. The supply of toluene feedstock to the reaction zone is interrupted while continuing the supply of hydrogen to the reaction zone. By continuing the supply of hydrogen to the reaction zone during periods of interruption of the toluene feedstock, the aging quality of the aluminum-deficient mordenite catalyst is improved.
    Type: Grant
    Filed: May 18, 1987
    Date of Patent: February 2, 1988
    Assignee: Cosden Technology, Inc.
    Inventors: Kevin P. Menard, Eugene W. Cotten, Jr.