Abstract
AbstractThe sorption isotherms for moist air and Florite were determined at a total pressure of one atmosphere and 75°, 100°, 125°, 150°, 175°, and 200°F. No hysteresis was evident.An investigation of the sorption isotherms showed that a concentration‐temperature coordinate could be identified, which when plotted against amount sorbed, causes all sorption isotherms to collapse into a single sorption therm.For purposes of sorption curve fitting the concentration‐temperature coordinate was incorporated into a version of BET theory. This relation produced an excellent fit of data without resorting to more complicated versions of BET theory.The concentration‐temperature coordinate was also incorporated into a modified version of Langmuir‐Hey theory to show that this interpretation also leads to a very satisfactory fit of sorption data.Some additional observations are made concerning the computerized curve fitting technique as applied to silica gel, the data for which were reported in an earlier publication.
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