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Multimolecular adsorption equation
Author(s) -
Rounsley R. R.
Publication year - 1961
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690070228
Subject(s) - adsorption , thermodynamics , chemistry , vapor pressure , range (aeronautics) , relative standard deviation , sorption isotherm , water vapor , materials science , chromatography , physics , organic chemistry , detection limit , composite material
An equation is derived for the multimolecular adsorption isotherm in the range where capillary adsorption is insignificant. The equation is demonstrated to apply quantitatively to the entire range of relative vapor pressure. It is shown that this equation reduces to the equation of Brunauer, Emmett, and Teller at lower relative vapor pressures. Application of this equation to data in the literature showed good agreement. The standard deviation of the data from the equation was in the same order of magnitude as the scatter of the data themselves. Although the application of this equation was largely to water vapor adsorption systems, several applications to other systems correlated equally well.