Influence of ion-pair formation, and pH gradient, on diffusion -coupling processes
β Scribed by J.P. Simonin; J.F. Gaillard; P. Turq; E. Soualhia
- Book ID
- 115814592
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 100 KB
- Volume
- 70
- Category
- Article
- ISSN
- 0009-2541
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π SIMILAR VOLUMES
## Abstract In mixingβdisguised azo coupling reactions the protons which are released during the electrophilic substitution steps cause a pHβgradient in the reaction zone. Since, owing to the acidβbase preβequilibria, these pHβgradients also determine the local concentrations of the reactants in th
The extraction scheme for dyes, developed previously, is applied to benzoic acid and its hydroxylated derivatives. Extractions are done with tri-n-octylamine at pH 5.5 and an ionic strength of 0.1 into chloroform. Equilibrium is attained in 20 min or less. The influences of pH and ionic strength of