Patents by Inventor Qingjin LIN

Qingjin LIN 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).

  • AFI-CHA hybrid crystal zeolite and NH3-SCR catalyst using same as carrier, and preparation methods thereof
    Patent number: 11241675
    Abstract: An AFI-CHA hybrid crystal molecular sieve and an NH3-SCR catalyst using the AFI-CHA hybrid crystal molecular sieve as a carrier, and preparation methods thereof are disclosed. The AFI-CHA hybrid crystal molecular sieve includes an AFI-type SAPO-5 molecular sieve and a CHA-type SAPO-34 molecular sieve, with hybrid crystal grains of AFI and CHA. The hybrid crystal molecular sieve is synthesized by a hydrothermal synthesis method and can be obtained by changing the structure directing agent, the heating rate and the calcinating temperature in the preparation process. Further, copper is loaded on the basis of the hybrid crystal molecular sieve to prepare copper-based NH3-SCR catalyst and corresponding monolithic catalyst. The catalytic activity and hydrothermal stability of the catalyst are significantly improved by the hybrid crystal molecular sieve.
    Type: Grant
    Filed: May 10, 2020
    Date of Patent: February 8, 2022
    Assignee: SICHUAN UNIVERSITY
    Inventors: Haidi Xu, Qingjin Lin, Yaoqiang Chen, Yun Wang, Xi Feng, Jianli Wang, Ming Zhao, Yi Jiao
  • AFI-CHA HYBRID CRYSTAL ZEOLITE AND NH3-SCR CATALYST USING SAME AS CARRIER, AND PREPARATION METHODS THEREOF
    Publication number: 20210308655
    Abstract: An AFI-CHA hybrid crystal molecular sieve and an NH3—SCR catalyst using the AFI-CHA hybrid crystal molecular sieve as a carrier, and preparation methods thereof are disclosed. The AFI-CHA hybrid crystal molecular sieve includes an AFI-type SAPO-5 molecular sieve and a CHA-type SAPO-34 molecular sieve, with hybrid crystal grains of AFI and CHA. The hybrid crystal molecular sieve is synthesized by a hydrothermal synthesis method and can be obtained by changing the structure directing agent, the heating rate and the calcinating temperature in the preparation process. Further, copper is loaded on the basis of the hybrid crystal molecular sieve to prepare copper-based NH3—SCR catalyst and corresponding monolithic catalyst. The catalytic activity and hydrothermal stability of the catalyst are significantly improved by the hybrid crystal molecular sieve.
    Type: Application
    Filed: May 10, 2020
    Publication date: October 7, 2021
    Applicant: SICHUAN UNIVERSITY
    Inventors: Haidi XU, Qingjin LIN, Yaoqiang CHEN, Yun WANG, Xi FENG, Jianli WANG, Ming ZHAO, Yi JIAO