| Autor: |
Mcculloch, Jennifer K., Perera, Jilska M., Kelly, Enda D., White, Lee R., Stevens, Geoffrey W., Grieser, Franz |
| Zdroj: |
Journal of Colloid and Interface Science; December 1996, Vol. 184 Issue: 2 p406-413, 8p |
| Abstrakt: |
A study of the kinetics of Cu2+extraction by 7-(4-ethyl-1-methyloctyl)8-hydroxyquinoline (Kelex 100) has been undertaken in a static transfer cell, where the total concentration of the Cu2+–Kelex 100 complex in the organic phase is monitored in situ as the reaction proceeds using attenuated total internal reflectance spectroscopy. The temporal characteristics of the extraction of Cu2+from water into heptane could be accounted for using a simple one-dimensional diffusion model coupled with a reaction-limited interaction between Cu2+and Kelex 100. Rate constants for the reaction of Kelex 100 and Cu2+at a model interface were obtained from stopped flow experiments using a neutral micelle (C12E8) system. These rate constants were used to model the reaction between Cu2+and Kelex 100 at the heptane–water interface. |
| Databáze: |
Supplemental Index |
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