Patents by Inventor Wencai Cheng

Wencai Cheng 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).

  • Catalysts and processes for the conversion of aromatic hydrocarbons and uses thereof in the production of aromatic hydrocarbons
    Patent number: 6500997
    Abstract: The present invention relates a catalyst for the conversion of aromatic hydrocarbons, comprising by weight 20 to 90 parts of a crystalline aluminosilicate zeolite with a SiO2/Al2O3 molar ratio of 10 to 100, 0.05 to 10 parts of metal bismuth or oxides thereof supported on the zeolite, 0 to 5 parts of one or more types of metal(s) M or oxides thereof, M being selected from the group consisting of molybdenum, copper, zirconium, strontium, lanthanum, rhenium, iron, cobalt, nickel and silver, and 10 to 60 parts of alumina as an adhesive. The present invention also relates to a process for the conversion of aromatic hydrocarbons using the catalyst of the present invention and uses thereof in the production of aromatic hydrocarbons.
    Type: Grant
    Filed: June 5, 1998
    Date of Patent: December 31, 2002
    Assignees: China Petro-Chemical Corporation, Shanghai Research Institute of Petrochemical Engineering
    Inventors: Wencai Cheng, Dejin Kong, Deqin Yang, Huaying Li, Zhirong Zhu
  • CATALYSTS AND PROCESSES FOR THE CONVERSION OF AROMATIC HYDROCARBONS AND USES THEREOF IN THE PRODUCTION OF AROMATIC HYDROCARBONS
    Publication number: 20020091060
    Abstract: The present invention relates a catalyst for the conversion of aromatic hydrocarbons, comprising by weight 20 to 90 parts of a crystalline aluminosilicate zeolite with a SiO2/Al2O3 molar ratio of 10 to 100, 0.05 to 10 parts of metal bismuth or oxides thereof supported on the zeolite, 0 to 5 parts of one or more types of metal(s) M or oxides thereof, M being selected from the group consisting of molybdenum, copper, zirconium, strontium, lanthanum, rhenium, iron, cobalt, nickel and silver, and 10 to 60 parts of alumina as an adhesive. The present invention also relates to a process for the conversion of aromatic hydrocarbons using the catalyst of the present invention and uses thereof in the production of aromatic hydrocarbons.
    Type: Application
    Filed: June 5, 1998
    Publication date: July 11, 2002
    Inventors: WENCAI CHENG, DEJIN KONG, DEQIN YANG, HUAYING LI, ZHIRONG ZHU