Patents by Inventor Dawei LAN

Dawei LAN 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).

  • Publication number: 20250018382
    Abstract: A hydrogenation-acid catalysis bifunctional catalyst, based on the mass of the catalyst, contains 80-99.8% of a silica-alumina molecular sieve component, 0.2-2% of a metal component with hydrogenation activity supported on the molecular sieve, and 0-20% of a hydrocarbyl modifying component. The hydrogenation active metal is selected from ruthenium, platinum, palladium, copper, nickel, or a combination thereof. The hydrocarbyl modifying component is a C1-20 hydrocarbyl. The catalyst has dual functions of hydrogenation and acid catalysis, and is suitable for benzene hydroalkylation reaction and alkane hydroisomerization reaction. It can be used in the benzene hydroalkylation to produce cyclohexylbenzene with high benzene conversion rate, high product selectivity, and less by-product cyclohexane.
    Type: Application
    Filed: October 25, 2022
    Publication date: January 16, 2025
    Inventors: Dawei LAN, Weimin YANG, Zhendong WANG, Xiangcheng LI, Chuang LIU, Junjie LI, Wennian WANG
  • Publication number: 20240387948
    Abstract: A separator for a lithium-sulfur battery, a method for preparing the same and a lithium-sulfur battery containing the same are provided. The separator includes a polymeric substrate film and a composite layer on one surface of the polymeric substrate film. The composite layer has a SCM molecular sieve and a conductive carbon material. The SCM molecular sieve is selected from SCM-14 and SCM-15. The SCM molecular sieve further contains cobalt. The separator in accordance can effectively suppress the shuttle of polysulfides in lithium-sulfur batteries, and thereby reduce side reactions within the batteries, lower the self-discharge rate of lithium-sulfur batteries, and improve the cycling performances, rate performances, and storage life of the batteries.
    Type: Application
    Filed: September 28, 2022
    Publication date: November 21, 2024
    Inventors: Weimin YANG, Jun LI, Zhendong WANG, Xiaofei WANG, Dawei LAN, Daoming ZHANG, Haoliang XUE, Sifei ZHOU
  • Publication number: 20240262771
    Abstract: A biphasic solvent system for converting biomass to prepare 2,5-hexanedione and a one-pot process for catalytically converting biomass to prepare 2,5-hexanedione with said biphasic solvent system are provided. The process includes the steps of contacting and reacting a biomass raw material with a hydrogenation catalyst using hydrogen gas as a hydrogen source in a heterogeneous system formed from an organic solvent, an inorganic salt and water to obtain 2,5-hexanedione. The hydrogenation catalyst includes a hydrogenation active component and a support. The support is selected from one or more of hydrophobic active carbon and graphene. The process can achieve efficient conversion of biomass without the participation of acid catalysts, and have a very high selectivity for the product 2,5-hexanedione.
    Type: Application
    Filed: May 20, 2022
    Publication date: August 8, 2024
    Inventors: Weimin YANG, Xiangcheng LI, Zhendong WANG, Xiao HAN, Xinqiang FENG, Zhiqing YUAN, Jian QIAO, Chuang LIU, Dawei LAN