SCI和EI收录∣中国化工学会会刊

›› 2011, Vol. 19 ›› Issue (5): 733-737.

• SELECTED PAPERS FROM THE 4TH NATIONAL CONFERENCE ON MASS TRANSFER AND SEPARATION ENGINEERING AND IN HONOUR OF PROF. K. T. YU (YU GUOCONG) • Previous Articles     Next Articles

A Research Note on the Adsorption of CO2 and N2

ZHANG Zhongzheng1, RUAN Hongzheng2, ZHOU Yaping2, SU Wei1, SUN Yan1, ZHOU Li1   

  1. 1. Chemical Engineering Research Center, School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, China;
    2. Department of Chemistry, School of Science Tianjin University, Tianjin 300072, China
  • Received:2010-06-02 Revised:2011-08-13 Online:2011-10-28 Published:2011-10-28

A Research Note on the Adsorption of CO2 and N2

张中正1, 阮红证2, 周亚平2, 苏伟1, 孙艳1, 周理1   

  1. 1. Chemical Engineering Research Center, School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, China;
    2. Department of Chemistry, School of Science Tianjin University, Tianjin 300072, China
  • 通讯作者: ZHOU Li,E-mail:zhouli@tju.edu.cn

Abstract: Experiments were made for the adsorption of CO2 and N2 on typical adsorbents to investigate the effects of porous structure and surface affinity of adsorbents as well as those of adsorption temperature and pressure that might cause the variation of adsorption mechanism. It is shown that polar surface tends to enlarge the adsorption difference between CO2 and N2, and the difference is more sensitive to temperature than the adsorbents with non-polar surface. The adsorbents with non-polar surface are not much sensitive to the effect of water vapor, though the water vapor interferes the separation remarkably. The separation coefficient linearly increases with the micro-pore volume per unit surface area of activated carbons, but no rule is shown on mesoporous silicon materials. The function of adsorption mechanism on the separation is not as much as expected.

Key words: adsorption, CO2, N2, comparison

摘要: Experiments were made for the adsorption of CO2 and N2 on typical adsorbents to investigate the effects of porous structure and surface affinity of adsorbents as well as those of adsorption temperature and pressure that might cause the variation of adsorption mechanism. It is shown that polar surface tends to enlarge the adsorption difference between CO2 and N2, and the difference is more sensitive to temperature than the adsorbents with non-polar surface. The adsorbents with non-polar surface are not much sensitive to the effect of water vapor, though the water vapor interferes the separation remarkably. The separation coefficient linearly increases with the micro-pore volume per unit surface area of activated carbons, but no rule is shown on mesoporous silicon materials. The function of adsorption mechanism on the separation is not as much as expected.

关键词: adsorption, CO2, N2, comparison