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The vapor‐liquid equilibrium of the hydrogen—n‐butane system at elevated pressures
Author(s) -
Klink A. E.,
Cheh H. Y.,
Amick E. H.
Publication year - 1975
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.690210614
Subject(s) - butane , fugacity , chemistry , hydrogen , thermodynamics , vapor–liquid equilibrium , equilibrium constant , phase (matter) , chromatography , organic chemistry , catalysis , physics
The vapor‐liquid equilibrium of the hydrogen– n –butane system was studied at temperatures between 54° and 121°C and at pressures up to 167 atm. The fugacity of hydrogen in the vapor phase was measured directly by using a palladium‐silver semipermeable membrane, whereas p‐T‐x‐y data were obtained in a conventional manner. Henry's constants for hydrogen in n ‐butane were obtained from the experimental fugacity data without making any assumptions about the vapor phase. Constant‐pressure, liquid‐phase activity coefficients for both hydrogen and n ‐butane were calculated and correlated by using a modified van Laar equation.