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银离子交换树脂π-络合吸附分离乙烯乙烷的研究

吴忠标; 刘越   

  1. Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-06-28 发布日期:2002-06-28
  • 通讯作者: 吴忠标

Study of Adsorptive Ethylene/Ethane Separation with Ag+-Exchanged Resins via π-
Complexation

WU Zhongbiao; LIU Yue   

  1. Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-06-28 Published:2002-06-28
  • Contact: WU Zhongbiao

摘要: Ag+-exchanged resins are prepared and studied for ethylene/ethane separation by adsorption.
OnAg+-exchanged S9, at 25℃ and 0.1013 MPa, the equilibrium adsorbed amount for C2H4 is
0.992 mmol.g-1, andthe adsorption ratio for C2H4/C2H6 is 3.56. The adsorption capacity can
be restored almost completely at 25℃and 75℃, and the desorption residual amount is less
than 0.01 mmol.g-1. For the adsorption consisting of physicaladsorption and π-complexation
with energy heterogeneity, the equilibrium data are correlated with Langmuir-Freundlich
isotherm equation. Furthermore, the heat of adsorption and the overall diffusion time
constants arecalculated from the experimental data. Considering all the adsorption
characteristics, the application potential forindustrial adsorption process is discussed.

关键词: separation;adsorption;ethylene;ethane;Ag+-exchanged resin;complexation sorbent

Abstract: Ag+-exchanged resins are prepared and studied for ethylene/ethane separation by adsorption.
OnAg+-exchanged S9, at 25℃ and 0.1013 MPa, the equilibrium adsorbed amount for C2H4 is
0.992 mmol.g-1, andthe adsorption ratio for C2H4/C2H6 is 3.56. The adsorption capacity can
be restored almost completely at 25℃and 75℃, and the desorption residual amount is less
than 0.01 mmol.g-1. For the adsorption consisting of physicaladsorption and π-complexation
with energy heterogeneity, the equilibrium data are correlated with Langmuir-Freundlich
isotherm equation. Furthermore, the heat of adsorption and the overall diffusion time
constants arecalculated from the experimental data. Considering all the adsorption
characteristics, the application potential forindustrial adsorption process is discussed.

Key words: separation, adsorption, ethylene, ethane, Ag+-exchanged resin, complexation sorbent