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ADSORPTION EQUILIBRIUM OF ETHYLENE-CARBON DIOXIDE MIXTURE ON ZEOLITE ZSM5 AND ITS CORRELATION

王金渠1; 张永春1; MaYiHua2; LiHaiqing2; TangTude2   

  1. 1 School of Chemical Engineering, Dalian University of Technology, Dalian, 116012, Liaoning

    2 Department of Chemical Engineering, Worcester Polytechnic Institute, Worcester, MA01609, USA

  • 收稿日期:1991-10-19 修回日期:1992-02-28 出版日期:1992-12-28 发布日期:1992-12-28
  • 通讯作者: 王金渠

ADSORPTION EQUILIBRIUM OF ETHYLENE-CARBON DIOXIDE MIXTURE ON ZEOLITE ZSM5 AND ITS CORRELATION

WANG Jinqu1; ZHANG Yongchun1; MaYiHua2; LiHaiqing2; TangTude2   

  1. 1 School of Chemical Engineering, Dalian University of Technology, Dalian, 116012, Liaoning

    2 Department of Chemical Engineering, Worcester Polytechnic Institute, Worcester, MA01609, USA
  • Received:1991-10-19 Revised:1992-02-28 Online:1992-12-28 Published:1992-12-28
  • Contact: WANG Jinqu

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摘要： Binary gas mixture adsorption equilibrium data for the ethylene-carbon dioxide system were obtained for cation exchanged forms of ZSM5 (Li~+, Na~+, K~+, Rb~+, Mg~(+2), Ca~(+2), Sr~(+2), and Ba~(+2)) for the gas phase CO_2 mole fracion of 0.766 at 308K and 101. 3kPa. The experimental adsorption phase diagrams were obtained for CO_2-C_2H_4 on NaZSM5 and MgZSM5. Single component adsorption isotherms for CO_2 and C_2H_4 were also obtained for these two zeolites. The single component data were used to obtain parameters derived in the vacancy solution model (VSM) and the statistical thermodynamic model(STM). These parameters were, in turn, used to predict binary mixture isotherms for these two zeolites. The agreement between experimental data and predicted value is generally good.

关键词: adsorption;ion-exchange;CO2;C2H4;zeolite ZSM5

Abstract: Binary gas mixture adsorption equilibrium data for the ethylene-carbon dioxide system were obtained for cation exchanged forms of ZSM5 (Li~+, Na~+, K~+, Rb~+, Mg~(+2), Ca~(+2), Sr~(+2), and Ba~(+2)) for the gas phase CO_2 mole fracion of 0.766 at 308K and 101. 3kPa. The experimental adsorption phase diagrams were obtained for CO_2-C_2H_4 on NaZSM5 and MgZSM5. Single component adsorption isotherms for CO_2 and C_2H_4 were also obtained for these two zeolites. The single component data were used to obtain parameters derived in the vacancy solution model (VSM) and the statistical thermodynamic model(STM). These parameters were, in turn, used to predict binary mixture isotherms for these two zeolites. The agreement between experimental data and predicted value is generally good.

Key words: adsorption, ion-exchange, CO2, C2H4, zeolite ZSM5

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