Patents by Inventor Guanghong Liu

Guanghong Liu 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).

  • Modification method of titanium-silicalite zeolite based on the mixture of quaternary ammonium salt and inorganic alkali
    Patent number: 9486790
    Abstract: This invention relates to a modification method for titanium-silicalite zeolite (TS-1). The feature of the invention is pretreating the TS-1, after that the TS-1 is modified by the mixture of quaternary ammonium salts and inorganic base. The quaternary ammonium salts mentioned above include tetrapropylammonium fluoride, tetrapropylammonium chloride, tetrapropylammonium iodide and their mixture. The inorganic base includes LiOH, NaOH and KOH and their mixtures. TS-1 after the modification is aftertreated at last. The invention is universal capable to modify the TS-1 synthesized by any method, especially the TS-1 made with a low cost method. The modification can enhance the catalytic performance on both gas and liquid phase epoxidation of propylene.
    Type: Grant
    Filed: March 18, 2012
    Date of Patent: November 8, 2016
    Assignee: DALIAN UNIVERSITY OF TECHNOLOGY
    Inventors: Hongchen Guo, Ji Su, Guanghong Liu
  • METHOD FOR MODIFYING TITANIUM SILICON MOLECULAR SIEVES
    Publication number: 20140356279
    Abstract: This invention belongs to the technical field of inorganic chemical synthesis, relating to a modification method for titanium-silicalite zeolite (TS-1). The feature of the invention is pretreating on the TS-1, the TS-1 after pretreatment is modified by the mixture of TPAOH and alkali salts, the alkali salts can be the compounds containing lithium, sodium and potassium element, and then the modification is performed at last. The benefit of the invention is universal capable to modify the TS-1 synthesized by any method, specially the TS-1 with low cost one, the modification can enhance the catalytic performance on both gas and liquid phase epoxidation of propylene.
    Type: Application
    Filed: March 18, 2012
    Publication date: December 4, 2014
    Applicant: Dalian University of Technology
    Inventors: Hongchen Guo, Guanghong Liu, Ling Liu, Ji Su
  • PROCESS FOR MODIFYING TS-1 BASED ON MIXED SOLUTION OF QUATERNARY AMMONIUM SALT AND INORGANIC BASE
    Publication number: 20140301942
    Abstract: This invention belongs to the technical field of inorganic chemical synthesis, relating to a modification method for titanium-silicalite zeolite (TS-1). The feature of the invention is pretreating the TS-1, after that the TS-1 is modified by the mixture of quaternary ammonium salts and inorganic base. The quaternary ammonium salts mentioned above include tetrapropylammonium fluoride, tetrapropylammonium chloride, tetrapropylammonium iodide and their mixture. The inorganic base include that LiOH, NaOH and KOH and their mixture. TS-1 after the modification is aftertreated at last. The benefit of the invention is universal capable to modify the TS-1 synthesized by any method, specially the TS-1 with low cost method, the modification can enhance the catalytic performance on both gas and liquid phase epoxidation of propylene.
    Type: Application
    Filed: March 18, 2012
    Publication date: October 9, 2014
    Inventors: Hongchen Guo, Ji Su, Guanghong Liu