Document Type

Article

Publication Date

12-1993

Publication Title

Chemical Engineering Science

Abstract

Adsorption equilibrium of benzene-p-xylene vapor mixture on silicalite is measured at 70^oC with a specially designed cyclic volumetric apparatus at pressure levels of 2.53 and 1.20 kPa. The isobaric isotherms are S-shaped, and selectivity curves at different pressures cross over; the p-xylene selectivity at 2.53 kPa is higher than that at 1.20 kPa over a certain composition range. The heterogeneous ideal adsorption solution (HIAS) model implemented on two patches qualitatively predicts these highly unusual behavior. The observed extraodinary phenomena are attributed to structural heterogeneity, a result of the tight-fit of sorbate molecules in silicalite pores. The succes of HIAS attests to the paramount importance of adequate representation of heterogeneity in adsorption models.

Original Citation

Li, J., , & Orhan, T. (1994). Adsorption equilibrium of benzene-p-xylene vapor mixture on silicalite. Chemical Engineering Science, 49(2), 189-197. doi:10.1016/0009-2509(94)80037-5

Volume

49

Issue

2

DOI

10.1016/0009-2509(94)80037-5

Version

Postprint

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Share

COinS