SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2020, Vol. 28 ›› Issue (2): 414-419.DOI: 10.1016/j.cjche.2019.05.014

• Separation Science and Engineering • 上一篇    下一篇

Effective adsorptive denitrogenation from model fuels over yttrium ionexchanged Y zeolite

Fuping Tian1, Xin Sun1, Xinyi Liu2, Hongluan Zhang1, Jiaxu Liu3, Hongchen Guo3, Yifu Zhang1, Changgong Meng1   

  1. 1 School of Chemistry, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China;
    2 State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
    3 State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
  • 收稿日期:2019-03-22 修回日期:2019-05-19 出版日期:2020-02-28 发布日期:2020-05-21
  • 通讯作者: Fuping Tian
  • 基金资助:
    We acknowledge the financial support from Natural Science Foundation of China-Liaoning United Funds (U1508205), Fundamental Research Funds for the Central Universities (DUT15ZD113), and the Key Laboratory of Applied Surface and Colloid Chemistry (Shanxi Normal University).

Effective adsorptive denitrogenation from model fuels over yttrium ionexchanged Y zeolite

Fuping Tian1, Xin Sun1, Xinyi Liu2, Hongluan Zhang1, Jiaxu Liu3, Hongchen Guo3, Yifu Zhang1, Changgong Meng1   

  1. 1 School of Chemistry, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China;
    2 State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
    3 State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
  • Received:2019-03-22 Revised:2019-05-19 Online:2020-02-28 Published:2020-05-21
  • Contact: Fuping Tian
  • Supported by:
    We acknowledge the financial support from Natural Science Foundation of China-Liaoning United Funds (U1508205), Fundamental Research Funds for the Central Universities (DUT15ZD113), and the Key Laboratory of Applied Surface and Colloid Chemistry (Shanxi Normal University).

摘要: The adsorption removal of indole and quinoline in octane with and without toluene over zeolites NaY and Yttrium Ion-exchanged Y (YY) using batch adsorption experiments was studied at 25 ℃ and 0.1 MPa. YY was prepared by treating NaY with Y(NO3)3 solution twice via liquid ion-exchange method. NaY and YY were both characterized by XRD, SEM, N2 adsorption, XRF, NH3-TPD, and pyridine-FTIR techniques. Adsorption isotherms of indole, quinoline and toluene in octane were conducted at 25.0 ℃ to explain the influence of toluene on nitrogen removal over NaY and YY. The partial destruct of the crystalline structure of NaY was observed after the introduction of yttrium ion, which led to an evident decline in BET surface area and pore volume of YY. Strong Brönsted acidity and medium Lewis acidity were introduced by yttrium ion-exchange. Though the specific surface area and pore volume of YY were much lower than those of NaY, YY exhibited equivalent adsorption capacities for indole and quinoline as NaY in model fuels without toluene. In the presence of 20 vol% toluene, however, YY exhibited much higher adsorption capacities for indole and quinoline than NaY, especially in the case of quinoline. The improved toluene-tolerant of YY was ascribed to the strong acid-base interaction between YY and quinoline and the decreased adsorption strength between YY and toluene.

关键词: Adsorptive denitrogenation, Indole, Quinoline, Toluene, Yttrium ion-exchanged Y zeolite

Abstract: The adsorption removal of indole and quinoline in octane with and without toluene over zeolites NaY and Yttrium Ion-exchanged Y (YY) using batch adsorption experiments was studied at 25 ℃ and 0.1 MPa. YY was prepared by treating NaY with Y(NO3)3 solution twice via liquid ion-exchange method. NaY and YY were both characterized by XRD, SEM, N2 adsorption, XRF, NH3-TPD, and pyridine-FTIR techniques. Adsorption isotherms of indole, quinoline and toluene in octane were conducted at 25.0 ℃ to explain the influence of toluene on nitrogen removal over NaY and YY. The partial destruct of the crystalline structure of NaY was observed after the introduction of yttrium ion, which led to an evident decline in BET surface area and pore volume of YY. Strong Brönsted acidity and medium Lewis acidity were introduced by yttrium ion-exchange. Though the specific surface area and pore volume of YY were much lower than those of NaY, YY exhibited equivalent adsorption capacities for indole and quinoline as NaY in model fuels without toluene. In the presence of 20 vol% toluene, however, YY exhibited much higher adsorption capacities for indole and quinoline than NaY, especially in the case of quinoline. The improved toluene-tolerant of YY was ascribed to the strong acid-base interaction between YY and quinoline and the decreased adsorption strength between YY and toluene.

Key words: Adsorptive denitrogenation, Indole, Quinoline, Toluene, Yttrium ion-exchanged Y zeolite