(395z) Adsorption Rate of Organic Solvent On Y Type Zeolite

Kazuyuki Chihara*, Natsuki Yamada,Tatsuharu Taira ,Yuzou Amari,Yusuke Suzuki,Shinji Tomita, Kenta Saito

Department of Applied Chemistry, Meiji University, Kawasaki, Kanagawa 214-8571, Japan

Fax: +81 - 44 - 934 - 7197   E-mail:chihara@isc.meiji.ac.jp

In recent years, instead of the chlorofluorocarbon specified as the ozone-depleting substance, a chlorinated organic compound, hydrocarbon, alcohol, etc. are used as an alternative washing solvent, and they are used as a mixed solvent in many cases. Therefore, adsorption operation of binary systems is needed.

In this study, adsorption measurement of various chlorinated hydrocarbons on Y-type zeolites were performed using the gravimetric method and the chromatographic method to examine the adsorption phenomena. The diffusivity that had been obtained by the gravimetric method was able to extrapolate the diffusivity that had been obtained by the chromato method. Moreover, the relation between the calculation frequency and the amount of adsorption and the diffusivity was examined by the MD simulation.

Dichloromethane (DCM), chloroform (TCM), and trichloroethylene (TCE) were used as the chlorinated hydrocarbons, and  HSZ-390HUD was used as adsorbent. Each adsorption measurement was performed to get the heat of adsorption and the activation energy of micro pore diffusivity.

The  diffusivity that had been obtained by the gravimetric method was different from it by MD simulation. The differences were 6-8 columns. However, the activation energies were almost coincident. It will be thought that the setting of the calculation condition and the improvement of the molecular model are necessary in future.