SCI和EI收录∣中国化工学会会刊

›› 2009, Vol. 17 ›› Issue (1): 36-41.

• • 上一篇    下一篇

The Effect of Hydrophobic Modification of Zeolites on CO2 Absorption Enhancement

卢素敏1, 马友光2, 朱春英2, 沈树华2, 何清1   

  1. 1. Department of Material and Chemical, Tianjin Polytechnic University, Tianjin 300160, China;
    2. School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
  • 收稿日期:2008-06-05 修回日期:2008-10-07 出版日期:2009-01-28 发布日期:2009-01-28
  • 通讯作者: MA Youguang, E-mail: ygma@tju.edu.cn
  • 基金资助:
    Supported by the National Natural Science Foundation of China (20176036)

The Effect of Hydrophobic Modification of Zeolites on CO2 Absorption Enhancement

LU Sumin1, MA Youguang2, ZHU Chunying2, SHEN Shuhua2, HE Qing1   

  1. 1. Department of Material and Chemical, Tianjin Polytechnic University, Tianjin 300160, China;
    2. School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
  • Received:2008-06-05 Revised:2008-10-07 Online:2009-01-28 Published:2009-01-28
  • Supported by:
    Supported by the National Natural Science Foundation of China (20176036)

摘要: Two methods of the modification of zeolite were employed:framework element modification and surface coating,and the influence of the zeolites before and after modification on the CO2 absorption was investigated.It was found that although hydrophobicity of zeolite could be obtained by means of the surficial organic coating in the method of surface coating modification,partial channel of zeolite would be plugged,as a result,leading to the surface area reducing greatly.Distinctively,the framework element modification method could maintain not only complete lattice structure and adsorption capability of zeolite,but would also obtain a good hydrophobic property.Consequently,significant enhancement on gas absorption by this modified zeolite was achieved and up to a maxi-mum enhancement factor of 2.62.This shows that the solid particles with good enhancement role to gas absorption need not only good adsorptive capability but also certain hydrophobicity.An unsteady heterogeneous model was employed to predict enhancement factor and the calculated results agree well with the experimental data.

关键词: zeolite, modification, enhancement of gas absorption, hydrophobicity

Abstract: Two methods of the modification of zeolite were employed:framework element modification and surface coating, and the influence of the zeolites before and after modification on the CO2 absorption was investigated.It was found that although hydrophobicity of zeolite could be obtained by means of the surficial organic coating in the method of surface coating modification, partial channel of zeolite would be plugged, as a result, leading to the surface area reducing greatly.Distinctively, the framework element modification method could maintain not only complete lattice structure and adsorption capability of zeolite, but would also obtain a good hydrophobic property.Consequently, significant enhancement on gas absorption by this modified zeolite was achieved and up to a maxi-mum enhancement factor of 2.62.This shows that the solid particles with good enhancement role to gas absorption need not only good adsorptive capability but also certain hydrophobicity.An unsteady heterogeneous model was employed to predict enhancement factor and the calculated results agree well with the experimental data.

Key words: zeolite, modification, enhancement of gas absorption, hydrophobicity