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Title: A classical model for closed-loop diagrams of binary liquid mixtures

Abstract

A classical lattice model for closed-loop temperature-composition phase diagrams has been developed. It considers the effect of specific interactions, such as hydrogen bonding, between dissimilar components. This van Laar-type model includes a Flory-Huggins term for the excess entropy of mixing. It is applied to several liquid-liquid equilibria of nonelectrolytes, where the molecules of the two components differ in size. The model is able to represent the observed data semi-quantitatively, but in most cases it is not flexible enough to predict all parts of the closed loop quantitatively. The ability of the model to represent different binary systems is discussed. Finally, attention is given to a correction term, concerning the effect of concentration fluctuations near the upper critical solution temperature.

Authors:
;  [1]
  1. California Univ., Berkeley, CA (United States). Dept. of Chemical Engineering|[Lawrence Berkeley Lab., CA (United States). Chemical Sciences Div.
Publication Date:
Research Org.:
Lawrence Berkeley Lab., CA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10146719
Report Number(s):
LBL-35432
ON: DE94011011; TRN: AHC29410%%29
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Mar 1994
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; BINARY MIXTURES; MATHEMATICAL MODELS; PHASE STUDIES; SOLUBILITY; CRITICAL TEMPERATURE; CHEMICAL BONDS; PROPANOLS; WATER; GLYCEROL; TOLUIDINES; NICOTINE; AMINES; EXPERIMENTAL DATA; 400201; CHEMICAL AND PHYSICOCHEMICAL PROPERTIES

Citation Formats

Schnitzler, J.v., and Prausnitz, J.M. A classical model for closed-loop diagrams of binary liquid mixtures. United States: N. p., 1994. Web. doi:10.2172/10146719.
Schnitzler, J.v., & Prausnitz, J.M. A classical model for closed-loop diagrams of binary liquid mixtures. United States. doi:10.2172/10146719.
Schnitzler, J.v., and Prausnitz, J.M. Tue . "A classical model for closed-loop diagrams of binary liquid mixtures". United States. doi:10.2172/10146719. https://www.osti.gov/servlets/purl/10146719.
@article{osti_10146719,
title = {A classical model for closed-loop diagrams of binary liquid mixtures},
author = {Schnitzler, J.v. and Prausnitz, J.M.},
abstractNote = {A classical lattice model for closed-loop temperature-composition phase diagrams has been developed. It considers the effect of specific interactions, such as hydrogen bonding, between dissimilar components. This van Laar-type model includes a Flory-Huggins term for the excess entropy of mixing. It is applied to several liquid-liquid equilibria of nonelectrolytes, where the molecules of the two components differ in size. The model is able to represent the observed data semi-quantitatively, but in most cases it is not flexible enough to predict all parts of the closed loop quantitatively. The ability of the model to represent different binary systems is discussed. Finally, attention is given to a correction term, concerning the effect of concentration fluctuations near the upper critical solution temperature.},
doi = {10.2172/10146719},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {3}
}