Predicting Absorption Equilibria of Mixtures: Comparison of Potential Theory and Ideal Adsorption Solution Theory.
Final rept. Dec 97-Jun 99,
GUILD ASSOCIATES INC BALTIMORE MD
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The Dubinin-Radushkevich DR Equation has been used successfully to correlate and predict pure-component adsorption equilibria for a variety of vapors on microporous, carbonaceous adsorbents. Two methods are examined to apply the predictive advantages of the DR Equation to describe multicomponent adsorption equilibria 1 the method of Grant and Manes, and 2 the method of Myers and Prausnitz. These methods are equivalent whenever the Gibbs adsorption isotherm is satisfied. The DR Equation for mixtures has the correct limits whenever more than one component is adsorbed. The thermodynamic theory of mixtures is used to determine if pure-component isotherm data is consistent with the Gibbs adsorption isotherm.
- Physical Chemistry