Adsorption Equilibrium and Kinetics of H2O on Zeolite 13X

Young Ki Ryu, Seung Ju Lee, Jong Wha Kim, Chang Ha Lee

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49 Citations (Scopus)


The adsorption characteristics of H2O on zeolite 13X were measured by a gravimetric method. The adsorption isotherm showed type II isotherm and was fitted by using both the excess surface work (ESW) model and Langmuir-Freundlich model. The results predicted by the Langmuir-Freundlich model were much smaller than the experimental results at higher-pressure region. However, the ESW model agreed well with the experimental data over the whole pressure region. In this case, a plot of the change in chemical potential versus the amount adsorbed gave two linear regions due to secondary effects such as capillary condensation. The experimental uptake curves were well fitted by several LDF models and solid diffusion model with the error range of 1.5-3.5%. Unlike the expectation that the more rigorous solid diffusion model would fit better, Nakao-Suzuki model showed the best agreement with experimental uptake data.

Original languageEnglish
Pages (from-to)525-530
Number of pages6
JournalKorean Journal of Chemical Engineering
Issue number4
Publication statusPublished - 2001 Jul

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Chemical Engineering


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