Patents by Inventor Liyan Guo

Liyan Guo 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).

  • Patent number: 11071967
    Abstract: The invention belongs to the field of chemical separation, hydrometallurgy and resource recovery and provides a method for preparing and applying of ion-keeper adsorbent. By adjusting the pH to selective oxidation to achieve the oxidation of ferrous iron into ferric iron. Separates the iron after the hydrothermal reaction; By using of ion imprint “ion keeper” effect and biomass as raw materials, to prepare the adsorbent with internal rules, hierarchical pores and high selectivity. It can be used for deep purification of chromium solution, such as iron, aluminum, vanadium and other impurities in the solution; After the deep purification of chromium solution, then adjusting the pH, adding appropriate hydrating agent, by hydrothermal precipitation treatment of chrome, filtration, acid washing and calcination to obtain chromium oxide crystal. It achieves the purification of chromium, iron, aluminum and chromium. The recycling and comprehensive utilization of waste resources are also realized.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: July 27, 2021
    Assignee: DALIAN UNIVERSITY OF TECHNOLOGY
    Inventors: Wei Ma, Shibo Duan, Shuangen Yu, Fanqing Meng, Ren Wang, Jun Xu, Liyan Guo, Lei Wu, Zhuo Liu, Dazhi Tan
  • Patent number: 10710886
    Abstract: The invention provides a method for synthesizing a mesoporous zeolite ETS-10 containing a metal without a templating agent. The method according to the invention comprises the steps of: mixing a silicon source with a NaOH solution to obtain a mixed solution so that the content of Na2O in the mixed solution is 10.0% to 20.0% by weight; adding a KOH or KF solution so that the content of K2O is 10.0% to 25.0% by weight and stirring it well; adding a titanium source solution and stirring it well; adding a precursor compound containing metal Ni and/or Co and stirring it well; and subjecting it to a crystallization reaction to obtain the mesoporous zeolite ETS-10. The mesoporous zeolite ETS-10 obtained by the invention has a specific surface area of 320 to 420 m2/g, a mesoporous volume of 0.11 to 0.21 cm3/g, and thus can be used as a catalyst and a support thereof in synthesis industry for macromolecular fine chemicals.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: July 14, 2020
    Assignee: PetroChina Company Limited
    Inventors: Tiegang Xu, Tiandi Tang, Wenqian Fu, Lei Zhang, Runsheng Shen, Guoren Cai, Baoli Ma, Weichi Xu, Guangming Wen, Jinhe Song, Dan Wang, Mingwei Tan, Wencheng Zhang, Jintao Guo, Gang Wang, Quanguo Zhang, Xianjun Wu, Liyan Guo, Lei Fang, Liru Cong, Guojia Zhang, Chunming Dong, Yu Liang
  • Publication number: 20200071174
    Abstract: The invention provides a method for synthesizing a mesoporous zeolite ETS-10 containing a metal without a templating agent. The method according to the invention comprises the steps of: mixing a silicon source with a NaOH solution to obtain a mixed solution so that the content of Na2O in the mixed solution is 10.0% to 20.0% by weight; adding a KOH or KF solution so that the content of K2O is 10.0% to 25.0% by weight and stirring it well; adding a titanium source solution and stirring it well; adding a precursor compound containing metal Ni and/or Co and stirring it well; and subjecting it to a crystallization reaction to obtain the mesoporous zeolite ETS-10. The mesoporous zeolite ETS-10 obtained by the invention has a specific surface area of 320 to 420 m2/g, a mesoporous volume of 0.11 to 0.21 cm3/g, and thus can be used as a catalyst and a support thereof in synthesis industry for macromolecular fine chemicals.
    Type: Application
    Filed: May 13, 2019
    Publication date: March 5, 2020
    Inventors: Tiegang XU, Tiandi Tang, Wenqian Fu, Lei Zhang, Runsheng Shen, Guoren Cai, Baoli Ma, Weichi Xu, Guangming Wen, Jinhe Song, Dan Wang, Mingwei Tan, Wencheng Zhang, Jintao Guo, Gang Wang, Quanguo Zhang, Xianjun Wu, Liyan Guo, Lei Fang, Liru Cong, Guojia Zhang, Chunming Dong, Yu Liang
  • Publication number: 20180339285
    Abstract: The invention belongs to the field of chemical separation, hydrometallurgy and resource recovery and provides a method for preparing and applying of ion-keeper adsorbent. By adjusting the pH to selective oxidation to achieve the oxidation of ferrous iron into ferric iron. Separates the iron after the hydrothermal reaction; By using of ion imprint “ion keeper” effect and biomass as raw materials, to prepare the adsorbent with internal rules, hierarchical pores and high selectivity. It can be used for deep purification of chromium solution, such as iron, aluminum, vanadium and other impurities in the solution; After the deep purification of chromium solution, then adjusting the pH, adding appropriate hydrating agent, by hydrothermal precipitation treatment of chrome, filtration, acid washing and calcination to obtain chromium oxide crystal. It achieves the purification of chromium, iron, aluminum and chromium. The recycling and comprehensive utilization of waste resources are also realized.
    Type: Application
    Filed: March 2, 2017
    Publication date: November 29, 2018
    Inventors: Wei MA, Shibo DUAN, Shuangen YU, Fanqing MENG, Ren WANG, Jun XU, Liyan GUO, Lei WU, Zhuo LIU, Dazhi TAN
  • Publication number: 20180291266
    Abstract: The present invention relates to the technology of material surface modification and the preparation adsorption new material, which involves the preparation of CQDs and the application of CQDs on modifying water purification function material. Firstly, the CQDs with rich functional groups and specific graphene structure has been prepared based on the low-cost biomass. Then, modified the traditional adsorbent by prepared CQDs under the in situ synthesis process. Secondly, synthesis the CQDs basic on the organic waste-water under low-temperature hydrothermal treatment process. Then, prepared the CQDs modified water purification material by collecting the CQDs under the flocculation process. This invention can be used in the widely used in the field of modification and preparation of functional materials, because of it not only gives a new method to synthesis low-cost and high performance water purification material, but also provide a new idea to treat high toxicity and refractory organic waste-water.
    Type: Application
    Filed: February 24, 2017
    Publication date: October 11, 2018
    Inventors: Wei MA, Fanqing MENG, Liyan GUO, Lei WU, Shibo DUAN, Zhen CHEN, Shuangen YU, Ren WANG, Jun XU
  • Patent number: D803221
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: November 21, 2017
    Inventor: Liyan Guo