Patents by Inventor Yoo Han Han

Yoo Han Han 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).

  • Olefin metathesis reaction catalyst and preparation method therefor
    Patent number: 10766019
    Abstract: The present invention relates to an olefin metathesis reaction catalyst where rhenium (Re) oxide or molybdenum (Mo) oxide is supported, as a catalyst main component, on a surface-modified mesoporous silica or mesoporous alumina support, and a preparation method therefor. The olefin metathesis reaction catalyst of the present invention allows highly efficient metathesis of long-chain unsaturated hydrocarbons having at least eight carbons at a low temperature of 150° C. or lower. The catalyst can be separated readily from reaction solution, regenerated at a low temperature of 400° C. or lower by removing toxins accumulated on it during the metathesis reaction, and used repeatedly in metathesis reaction many times, thereby being made good use in commercial olefin metathesis processes.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: September 8, 2020
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Jong Yeol Jeon, Man Jae Gil, Dong Won Hwang, Young Kyu Hwang, Yoo Han Han
  • OLEFIN METATHESIS REACTION CATALYST AND PREPARATION METHOD THEREFOR
    Publication number: 20190217277
    Abstract: The present invention relates to an olefin metathesis reaction catalyst where rhenium (Re) oxide or molybdenum (Mo) oxide is supported, as a catalyst main component, on a surface-modified mesoporous silica or mesoporous alumina support, and a preparation method therefor. The olefin metathesis reaction catalyst of the present invention allows highly efficient metathesis of long-chain unsaturated hydrocarbons having at least eight carbons at a low temperature of 150° C. or lower. The catalyst can be separated readily from reaction solution, regenerated at a low temperature of 400° C. or lower by removing toxins accumulated on it during the metathesis reaction, and used repeatedly in metathesis reaction many times, thereby being made good use in commercial olefin metathesis processes.
    Type: Application
    Filed: November 9, 2017
    Publication date: July 18, 2019
    Inventors: Jong Yeol Jeon, Man Jae Gil, Dong Won Hwang, Young Kyu Hwang, Yoo Han Han