Adsorption Equilibrium of Benzene-P-Xylene Vapor Mixture on Silicalite

Jianmin Li; Orhan Talu; Orhan Talu

doi:10.1016/0009-2509(94)80037-5

Adsorption Equilibrium of Benzene-P-Xylene Vapor Mixture on Silicalite

Jianmin Li
, Orhan Talu
, Orhan Talu

Cleveland State University

Cleveland State University

Research output: Contribution to journal › Article › peer-review

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 language	American English
Journal	Chemical Engineering Science
Volume	49
DOIs	https://doi.org/10.1016/0009-2509(94)80037-5
State	Published - Dec 1 1993

Disciplines

Chemical Engineering
Membrane Science

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http://dx.doi.org/10.1016/0009-2509(94)80037-5

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title = "Adsorption Equilibrium of Benzene-P-Xylene Vapor Mixture on Silicalite",

abstract = " Adsorption equilibrium of benzene - p - xylene vapor mixture on silicalite is measured at 70\textasciicircum{}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.",

author = "Jianmin Li and Orhan Talu and Orhan Talu",

note = "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",

year = "1993",

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doi = "10.1016/0009-2509(94)80037-5",

language = "American English",

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T1 - Adsorption Equilibrium of Benzene-P-Xylene Vapor Mixture on Silicalite

AU - Li, Jianmin

AU - Talu, Orhan

N1 - 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

PY - 1993/12/1

Y1 - 1993/12/1

N2 - 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.

AB - 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.

UR - https://engagedscholarship.csuohio.edu/encbe_facpub/69

U2 - 10.1016/0009-2509(94)80037-5

DO - 10.1016/0009-2509(94)80037-5

M3 - Article

VL - 49

JO - Chemical Engineering Science

JF - Chemical Engineering Science

ER -

Adsorption Equilibrium of Benzene-P-Xylene Vapor Mixture on Silicalite

Abstract

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