Patents by Inventor Huanren Zhang

Huanren Zhang 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).

  • Heterogeneous catalysis solid base catalyst and a preparation process and a use thereof
    Publication number: 20070232824
    Abstract: The present invention relates to a solid base catalyst including 10.0%-30.0% by weight of calcium oxide and 70.0%-90.0% by weight of zirconium oxide, in which the calcium source is CaCl2 or Ca(NO3)2, and the Zirconium source is ZrOCl2 or ZrO(NO3)2. The invention also provides a process for the preparation of the catalyst and a use of the catalyst in synthesizing dimethyl carbonate via heterogeneous catalysis. The catalyst shows good catalytic stability and catalytic activity, and can be separated from products easily and is reusable.
    Type: Application
    Filed: January 18, 2007
    Publication date: October 4, 2007
    Inventors: Yuhan Sun, Wei Wei, Desheng Zhang, Dachuan Shi, Liming Liu, Hui Wang, Huanren Zhang, Yanhua Cheng, Ning Zhao, Mouhua Wang, Xiuzhi Wang