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Three‐liquid phase equilibria in water+benzene+caprolactam+(NH 4 ) 2 SO 4 mixtures
Author(s) -
Huan Zhou,
Van Bochove Gerard H.,
De Loos Theo W.
Publication year - 2003
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.690490318
Subject(s) - non random two liquid model , caprolactam , benzene , chemistry , thermodynamics , phase (matter) , liquid liquid , ammonium sulfate , electrolyte , salt (chemistry) , analytical chemistry (journal) , chromatography , activity coefficient , organic chemistry , physics , electrode , aqueous solution
Liquid–liquid–liquid equilibrium (LLLE) data are reported for the water+benzene+caprolactam+ammonium sulfate system at 293.1 K, 313.1 K, and 328.1 K. The experiments show a distinct pattern of phase behavior with increasing salt concentration and temperature. The tricritical point of the system was not determined, but was estimated to be around 332 K. The results are modeled using a modification of the extended electrolyte NRTL model. The model was able to represent the LLLE data satisfactorily.