Solubility in Binary Solvent Systems: Comparison of Predictive Equations Derived from the NIBS Model
作者:
CherylL. Judy,
NicholasM. Pontikos,
WilliamE. Acree,
期刊:
Physics and Chemistry of Liquids
(Taylor Available online 1987)
卷期:
Volume 16,
issue 3
页码: 179-187
ISSN:0031-9104
年代: 1987
DOI:10.1080/00319108708078517
出版商: Taylor & Francis Group
关键词: Binary solvents-predictive expressions for solubility;Solubility-binary solvent systems;Pyrene-solubility in binary solvents;Biphenyl-solubility in binary solvents.
数据来源: Taylor
摘要:
Experimental solubilities are reported for pyrene in binary solvent mixtures containing benzene with n-hexane, cyclohexane, n-heptane, n-octane, cyclooctane and isooctane at 26°C. Results of these measurements, combined with published pyrene and biphenyl solubilities, are used to test predictive expressions derived from the Nearly Ideal Binary Solvent (NIBS) model. The most successful equation in terms of goodness of fit involved a surface fraction average of the excess Gibbs free energy relative to Raoult's law and predicted the experimental solubilities in 17 systems with an average deviation of 2.3% and a maximum deviation of 8.9%. Two expressions approximating weighting factors with molar volumes provided accurate predictions in many systems studied but failed in their ability to predict pyrene solubilities in solvent mixtures containing benzene.
点击下载:
PDF (387KB)
返 回