Influence of Substituents on Phenols Extraction and Dissociation
Based on the systematic analysis of experimental data for liquid-liquid extraction of the substituted phenols, the F α and F μ parameters have been suggested to describe the dependence of log P 0 (P 0 is the distribution coefficient) from the energy of universal intermolecular interactions in soluti...
Saved in:
| Published in: | Separation science and technology Vol. 48; no. 2; pp. 303 - 318 |
|---|---|
| Main Authors: | , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Taylor & Francis Group
01-12-2012
|
| Subjects: | |
| Online Access: | Get full text |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Based on the systematic analysis of experimental data for liquid-liquid extraction of the substituted phenols, the F
α
and F
μ
parameters have been suggested to describe the dependence of log P
0
(P
0
is the distribution coefficient) from the energy of universal intermolecular interactions in solutions and the structural characteristics of solutions in non-polar and polar solvents correspondingly. The deviations from the dependences of log P
0
= f(F
α
) and log P
0
= f(F
μ
) show the contribution of specific interactions (H-bonds) to the process of extraction. The method is aimed at determination of the ionization constant of phenol (K
a
) on the basis of phenol distribution between the water and non-water solvents, which do not mix up with water. It is shown that the рK
a
values of the substituted phenols obtained by the measurements in water and non-water solvents depend on σ
0
-constant. The influence of the amount of the same substituents in the phenol molecules on the рK
a
values was studied. |
|---|---|
| Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
| ISSN: | 0149-6395 1520-5754 |
| DOI: | 10.1080/01496395.2012.686551 |