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The silica gel‐water vapor sorption therm
Author(s) -
Jury Stanley H.,
Edwards Harold R.
Publication year - 1971
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450490519
Subject(s) - sorption , silica gel , adsorption , hysteresis , water vapor , atmosphere (unit) , langmuir , thermodynamics , function (biology) , materials science , distribution function , vapor pressure , chemistry , chromatography , chemical engineering , organic chemistry , physics , engineering , quantum mechanics , evolutionary biology , biology
The sorption isotherms for moist air and silica gel were determined at a total pressure of one atmosphere and 82, 100, 125, 150, 175 and 200°F. A small hysteresis effect was noted. The silica gel‐moist air system can best be described by either of two equations. The first is the distribution function description of the Polanyi characteristic curve. If the data are described by this equation the adsorption process can be explained in terms of Polanyi's potential theory. Alternately, the data may be described by a double Langmuir expression.