A simple isotherm equation for modeling the adsorption equilibria on porous solids over wide temperature ranges

Li Zhou; Junshe Zhang; Yaping Zhou

doi:10.1021/la010005p

A simple isotherm equation for modeling the adsorption equilibria on porous solids over wide temperature ranges

Li Zhou
, Junshe Zhang
, Yaping Zhou

Tianjin University

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

46 Scopus citations

Abstract

A new isotherm equation is derived from the distribution of energetic heterogeneity of adsorbent surface. It is simple in form and is physically compatible with the mechanism of monolayer adsorption. The proposed equation is used to model the experimental adsorption equilibrium of methane on activated carbon for the range of 158-333 K. It successfully represents the whole set of data for both sides of the critical temperature. Compared with the Langmuir-Freundlich equation, it yields a parameter of saturation adsorption, which is in agreement with the fictitious limiting adsorption defined by the intersection of linear isotherms.

Original language	English
Pages (from-to)	5503-5507
Number of pages	5
Journal	Langmuir
Volume	17
Issue number	18
DOIs	https://doi.org/10.1021/la010005p
State	Published - 4 Sep 2001
Externally published	Yes

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10.1021/la010005p

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abstract = "A new isotherm equation is derived from the distribution of energetic heterogeneity of adsorbent surface. It is simple in form and is physically compatible with the mechanism of monolayer adsorption. The proposed equation is used to model the experimental adsorption equilibrium of methane on activated carbon for the range of 158-333 K. It successfully represents the whole set of data for both sides of the critical temperature. Compared with the Langmuir-Freundlich equation, it yields a parameter of saturation adsorption, which is in agreement with the fictitious limiting adsorption defined by the intersection of linear isotherms.",

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N2 - A new isotherm equation is derived from the distribution of energetic heterogeneity of adsorbent surface. It is simple in form and is physically compatible with the mechanism of monolayer adsorption. The proposed equation is used to model the experimental adsorption equilibrium of methane on activated carbon for the range of 158-333 K. It successfully represents the whole set of data for both sides of the critical temperature. Compared with the Langmuir-Freundlich equation, it yields a parameter of saturation adsorption, which is in agreement with the fictitious limiting adsorption defined by the intersection of linear isotherms.

AB - A new isotherm equation is derived from the distribution of energetic heterogeneity of adsorbent surface. It is simple in form and is physically compatible with the mechanism of monolayer adsorption. The proposed equation is used to model the experimental adsorption equilibrium of methane on activated carbon for the range of 158-333 K. It successfully represents the whole set of data for both sides of the critical temperature. Compared with the Langmuir-Freundlich equation, it yields a parameter of saturation adsorption, which is in agreement with the fictitious limiting adsorption defined by the intersection of linear isotherms.

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A simple isotherm equation for modeling the adsorption equilibria on porous solids over wide temperature ranges

Abstract

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