Patents by Inventor Zhanqiao Liang

Zhanqiao Liang 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).

  • Catalyst and process for the conversion of heavy aromatics to light aromatics
    Patent number: 5744674
    Abstract: A catalyst for the preparation of benzene, toluene and xylene from C.sub.9.sup.+ heavy aromatics consists of zeolite ZSM-5 and .gamma.- or .eta.-Al.sub.2 O.sub.3 as carrier, Re, Sn and Pt or Pd supported on the carrier. Under the conditions of 350.degree.-450.degree. C., 0.5-3.5 MPa, a WHSV of 1-5 h.sup.-1 and a H.sub.2 /HC ratio (v/v) of 500-1200, the catalyst achieves high activity and stability as well as low hydrogen consumption.
    Type: Grant
    Filed: February 6, 1996
    Date of Patent: April 28, 1998
    Assignees: China Petrochemical Corporation, Research Institute of Petroleum Processing
    Inventors: Shouxi Gui, Yuzhi Hao, Yanqing Li, Zhenhua Jing, Haohui Gu, Zhanqiao Liang, Baoyu Cheng