THE ZLC METHOD FOR DIFFUSION MEASUREMENTS
The zero length column (ZLC) technique has become a common tool to measure mass transfer kinetics in microporous adsorbents. The partial loading experiment is a variant of the traditional ZLC method in which the adsorbent is not allowed to reach full equilibration with the gas phase. Even though this variant of the ZLC experiment was introduced over 10 years ago, it has been applied only by few researchers. In this contribution we review the basic theory of the partial loading experiment and show that it can be used to establish the contributions of different mass transfer mechanisms. A detailed numerical model that includes the effects of nonlinearity of the isotherm and combined diffusion and surface barrier effects is presented to allow the correlation of complex sorbate-sorbent systems.
STEFANO BRANDANI
Department of Chemical Engineering, University College London, Torrington Place,London WC1E 7JE, UK
国际会议
天津
英文
253-262
2006-05-22（万方平台首次上网日期，不代表论文的发表时间）