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The study of multicomponent gas‐solid equilibrium at high pressures by gas chromatography: Part II. Generalization of the theory and application to the methane‐propane‐silica gel system
Author(s) -
Gilmer H. B.,
Kobayashi Riki
Publication year - 1965
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690110425
Subject(s) - propane , adsorption , methane , chemistry , elution , gravimetric analysis , silica gel , volume (thermodynamics) , chromatography , gas chromatography , alkane , dilution , analytical chemistry (journal) , hydrocarbon , thermodynamics , organic chemistry , physics
The mathematical relation for the retention volume for elution chromatography has been extended to include the case of a multicomponent elution gas mixture in which all the components are adsorbed appreciably on the adsorbent. The total adsorption, component adsorption, and the K values or the ratio of the gas‐phase concentration to the adsorbed‐phase concentration for each component are related to the retention volume for the components as measured by a technique which distinguishes the molecules in the elution gas from those in the perturbing sample. Radioactively traced hydrocarbons are used in the application to obtain the retention volumes appropriate for the theory. The relations derived were applied in studying the adsorption of methane‐propane mixtures on silica gel up to a pressure of 1,000 lb./sq. in. abs. The internal consistency of the propane adsorption data with the propane infinite dilution data and the methane data with the pure methane adsorption data obtained by a gravimetric method is demonstrated.