Protolytic properties of lignin in binary mixtures of water with aprotic solvents

Protolytic properties of lignin in binary mixtures of water with aprotic solvents Acid dissociation constants for three main types of phenol structural fragments of lignin in binary mixtures of water with N,N-dymethylformamide, dimethyl sulfoxide, and 1,4-dioxane were determined by spectrophotometric potentiometric titration. The effect of solvent on lignin protolytic properties was examined on the basis of the Kamlet-Taft principle of linear relationship of free solvation energies. It was found that nonspecific interactions with solvent make the dominating contribution to the effect of the medium. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

Protolytic properties of lignin in binary mixtures of water with aprotic solvents

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Publisher
Springer US
Copyright
Copyright © 2013 by Pleiades Publishing, Ltd.
Subject
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering
ISSN
1070-4272
eISSN
1608-3296
D.O.I.
10.1134/S1070427213070197
Publisher site
See Article on Publisher Site

Abstract

Acid dissociation constants for three main types of phenol structural fragments of lignin in binary mixtures of water with N,N-dymethylformamide, dimethyl sulfoxide, and 1,4-dioxane were determined by spectrophotometric potentiometric titration. The effect of solvent on lignin protolytic properties was examined on the basis of the Kamlet-Taft principle of linear relationship of free solvation energies. It was found that nonspecific interactions with solvent make the dominating contribution to the effect of the medium.

Journal

Russian Journal of Applied ChemistrySpringer Journals

Published: Aug 28, 2013

References

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