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Conditions needed for satisfactory measurement of mass transfer coefficients, internal diffusivity and adsorption rate constants
Author(s) -
Gangwal Santosh K.,
Hudgins Robert R.,
Silveston Peter L.
Publication year - 1978
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.5450560505
Subject(s) - physisorption , thermal diffusivity , mass transfer , adsorption , chemistry , reaction rate constant , thermodynamics , mass diffusivity , analytical chemistry (journal) , constant (computer programming) , mass transfer coefficient , chromatography , physics , kinetics , classical mechanics , programming language , computer science
Conditions are developed for the accurate measurement of mass transfer coefficients, internal diffusivity and adsorption rate constants using pulse gas chromatography within the limits of the approximation of the Kubin‐Kucera model for adsorption in a packed bed. Physisorption rates are shown to be many orders of magnitude higher than those measurable. Thus, pulse chromatography cannot be used to determine physisorption rate constants. Mass transfer coefficients at low Reynolds Numbers are shown to be measurable under severely restricted conditions.