Patents by Inventor Xunda DAI

Xunda DAI 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).

  • Method for producing long-chain alkylbenzene
    Patent number: 11370722
    Abstract: The present invention relates to a method for producing long-chain alkylbenzene by reacting an aromatic hydrocarbon and a long-chain olefin, wherein the reaction is carried out in the presence of a solid acid catalyst, the aromatic hydrocarbon is selected from the group consisting of benzene, toluene and xylene, the long-chain olefin is selected from the group consisting of C8-C26 alkenes, the catalyst is a HMCM-22 type molecular sieve solid acid catalyst modified with heteroatom(s), the heteroatom(s) is/are selected from the group consisting of boron, gallium, indium, chromium, molybdenum, tungsten, manganese and phosphorus, and the molar ratio of silicon atoms to heteroatoms in the solid acid catalyst is in the range of 1:0.01-0.03. The invention also relates to a method for regenerating the solid acid catalyst used in the reaction.
    Type: Grant
    Filed: January 25, 2021
    Date of Patent: June 28, 2022
    Assignee: Nanjing Chemistry New Energy Technology Co. Ltd.
    Inventors: Xiwu Chen, Jian Chen, Weituo Xie, Xunda Dai
  • METHOD FOR PRODUCING LONG-CHAIN ALKYLBENZENE
    Publication number: 20210395166
    Abstract: The present invention relates to a method for producing long-chain alkylbenzene by reacting an aromatic hydrocarbon and a long-chain olefin, wherein the reaction is carried out in the presence of a solid acid catalyst, the aromatic hydrocarbon is selected from the group consisting of benzene, toluene and xylene, the long-chain olefin is selected from the group consisting of C8-C26 alkenes, the catalyst is a HMCM-22 type molecular sieve solid acid catalyst modified with heteroatom(s), the heteroatom(s) is/are selected from the group consisting of boron, gallium, indium, chromium, molybdenum, tungsten, manganese and phosphorus, and the molar ratio of silicon atoms to heteroatoms in the solid acid catalyst is in the range of 1:0.01-0.03. The invention also relates to a method for regenerating the solid acid catalyst used in the reaction.
    Type: Application
    Filed: January 25, 2021
    Publication date: December 23, 2021
    Applicant: Nanjing Chemistry New Energy Technology Co. Ltd.
    Inventors: Xiwu CHEN, Jian CHEN, Weituo XIE, Xunda DAI