Patents by Inventor Yuanguo Xu

Yuanguo Xu 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).

  • Method for preparing a catalyst for reforming naphtha
    Patent number: 5227357
    Abstract: A naphtha-reforming catalyst is prepared by using aluminum hydroxide as a feed stock, which is acidificated in steam at high temperature, then shaped and calcined to form .gamma.-Al.sub.2 O.sub.3 support which is supported with metals of Pt, Re and Ti and halogens. The Pt content is 0.075-0.8 Wt %, Re/Pt ratio is 0.1-3.0 (Wt.). Since the .gamma.-Al.sub.2 O.sub.3 support having high purity, high crystallinity and concentrated middle pores has been adopted, the activity, selectivity and stability of the catalyst are increased considerably while the Pt content decreased.
    Type: Grant
    Filed: March 15, 1991
    Date of Patent: July 13, 1993
    Assignee: China Petro-Chemical Corporation
    Inventors: Fengduo Sun, Yuanguo Xu