On the Dubinin—Radushkevich Equation for Adsorption in Microporous Solids in the Henry's Law Region

A. Kapoor; J. A. Ritter; R. T. Yang

doi:10.1021/la00088a043

On the Dubinin—Radushkevich Equation for Adsorption in Microporous Solids in the Henry's Law Region

A. Kapoor
, J. A. Ritter
, R. T. Yang

Department of Chemical and Biological Engineering

University at Buffalo

SUNY Buffalo

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

95 Scopus citations

Abstract

This paper presents a modified Dubinin—Radushkevich (MDR) equation that has a proper Henry's law limit and retains the original form of the DR equation at moderate to high pressures. It was tested against 35 isotherms and gave a better fit compared to the Langmuir and DR models. The MDR equation is applicable over the entire range of pressure from 0 to P_aand is therefore useful for the prediction of multicomponent adsorption equilibria via solution thermodynamic models. However, above a relative pressure (P/P_s) of 10^-2, the DR equation can be used for this purpose.

Original language	English
Pages (from-to)	1118-1121
Number of pages	4
Journal	Langmuir
Volume	5
Issue number	4
DOIs	https://doi.org/10.1021/la00088a043
State	Published - Jul 1 1989

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abstract = "This paper presents a modified Dubinin—Radushkevich (MDR) equation that has a proper Henry's law limit and retains the original form of the DR equation at moderate to high pressures. It was tested against 35 isotherms and gave a better fit compared to the Langmuir and DR models. The MDR equation is applicable over the entire range of pressure from 0 to Paand is therefore useful for the prediction of multicomponent adsorption equilibria via solution thermodynamic models. However, above a relative pressure (P/Ps) of 10-2, the DR equation can be used for this purpose.",

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N2 - This paper presents a modified Dubinin—Radushkevich (MDR) equation that has a proper Henry's law limit and retains the original form of the DR equation at moderate to high pressures. It was tested against 35 isotherms and gave a better fit compared to the Langmuir and DR models. The MDR equation is applicable over the entire range of pressure from 0 to Paand is therefore useful for the prediction of multicomponent adsorption equilibria via solution thermodynamic models. However, above a relative pressure (P/Ps) of 10-2, the DR equation can be used for this purpose.

AB - This paper presents a modified Dubinin—Radushkevich (MDR) equation that has a proper Henry's law limit and retains the original form of the DR equation at moderate to high pressures. It was tested against 35 isotherms and gave a better fit compared to the Langmuir and DR models. The MDR equation is applicable over the entire range of pressure from 0 to Paand is therefore useful for the prediction of multicomponent adsorption equilibria via solution thermodynamic models. However, above a relative pressure (P/Ps) of 10-2, the DR equation can be used for this purpose.

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ER -

On the Dubinin—Radushkevich Equation for Adsorption in Microporous Solids in the Henry's Law Region

Abstract

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