Evaluation of Some Prediction Models for Physico-Chemical Constants of Dialkylphosphoric Acids
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概要
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Some semi -theoretical models for the prediction of physico-chemical constants of such dialkylphosphoric acids as di-2-methylnonylphosphoric acid (DP-10R) and di-2-ethylhexylphosphoric acid (DP-8R) are evaluated. Dissociation constants (pKa) for the two extractants have been estimated by using Kabachnik equation correlated to Hammet equation. The estimated values are compared to the experimental ones. Based on the results, a more accurate equation is proposed. Distribution equilibrium between water and some kinds of organic solvents have been studied for DP-10R and DP-8R. The dimerization constants (K2) and distribution constants (Ko) for the two dialkylphosphoric acids are predicted by using Leggett equation and Kamlet -Taft solvatochromic parameters. The linear solvation energy relationship (LSER) model can be applied to the estimation of logKo and logK2 for other dialkylphosphoric acids.
- 福井大学工学部の論文
福井大学工学部 | 論文
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