An equation of state for multilayer adsorption

Journal Article · Wed Nov 01 04:00:00 EST 1995 · Journal of Colloid and Interface Science

DOI:https://doi.org/10.1006/jcis.1995.1480· OSTI ID:131896

Aranovich, G L; Donohue, M D ^[1]

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1. Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Chemical Engineering

An equation of state for multilayer adsorption is derived. This equation gives the correct thermodynamic behavior at small pressures and at the saturation vapor pressure. The equation of state is analyzed for weakly attractive and strongly attractive surfaces and results are compared with experimental data. In addition, a new relationship is obtained for the exponent d which describes the singularity in the multilayer adsorption isotherm. It is shown that d depends on temperature, saturation vapor pressure, Henry`s coefficient, monolayer capacity, and surface tension.

• DOE Contract Number: FG02-87ER13777
• OSTI ID: 131896
• Journal Information: Journal of Colloid and Interface Science, Journal Name: Journal of Colloid and Interface Science Journal Issue: 2 Vol. 175; ISSN 0021-9797; ISSN JCISA5
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
ADSORPTION ISOTHERMS
BENZENE
EQUATIONS OF STATE
INTERFACES
MERCURY
PENTANE
SORPTIVE PROPERTIES
WATER