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The prediction of multicomponent adsorption equilibria from single‐component data is one of the most challenging and important problems in adsorption. The chief obstacle to progress is a scarcity of accurate and consistent experimental data over a wide range of temperature and loading for testing theories. Several binaries and one ternary system on two types of zeolites (silicalite and faujasite) were studied in a combination calorimeter‐volumetric apparatus. Activity coefficients and excess functions for enthalpy, free energy, and entropy were extracted from the binary data using a three‐constant equation to represent nonidealities. The successful correlation of binary excess functions with pure‐component properties for type I isotherms on zeolites is a first step toward predicting multicomponent adsorption from single‐gas adsorption and a major advancement over the theory of ideal adsorbed solutions.
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Siperstein et al. (2001) studied this question.
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