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Title: A kinetic study of copper ion exchange by Kelex 100 at a heptane-water interface

Abstract

A study of the kinetics of Cu{sup 2+} 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 Cu{sup 2+}-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 Cu{sup 2+} from water into heptane could be accounted for using a simple one-dimensional diffusion model coupled with a reaction-limited interaction between Cu{sup 2+} and Kelex 100. Rate constants for the reaction of Kelex 100 and Cu{sup 2+} at a model interface were obtained from stopped flow experiments using a neutral micelle (C{sub 12}E{sub 8}) system. These rate constants were used to model the reaction between Cu{sup 2+} and Kelex 100 at the heptane-water interface.

Authors:
; ; ; ; ;  [1]
  1. Univ. of Melbourne, Parkville, Victoria (Australia)
Publication Date:
OSTI Identifier:
419828
Resource Type:
Journal Article
Journal Name:
Journal of Colloid and Interface Science
Additional Journal Information:
Journal Volume: 184; Journal Issue: 2; Other Information: PBD: 25 Dec 1996
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 54 ENVIRONMENTAL SCIENCES; COPPER; SOLVENT EXTRACTION; MATHEMATICAL MODELS; OXINE; AQUEOUS SOLUTIONS; KINETICS

Citation Formats

McCulloch, J K, Perera, J M, Kelly, E D, White, L R, Stevens, G W, and Grieser, F. A kinetic study of copper ion exchange by Kelex 100 at a heptane-water interface. United States: N. p., 1996. Web. doi:10.1006/jcis.1996.0635.
McCulloch, J K, Perera, J M, Kelly, E D, White, L R, Stevens, G W, & Grieser, F. A kinetic study of copper ion exchange by Kelex 100 at a heptane-water interface. United States. https://doi.org/10.1006/jcis.1996.0635
McCulloch, J K, Perera, J M, Kelly, E D, White, L R, Stevens, G W, and Grieser, F. 1996. "A kinetic study of copper ion exchange by Kelex 100 at a heptane-water interface". United States. https://doi.org/10.1006/jcis.1996.0635.
@article{osti_419828,
title = {A kinetic study of copper ion exchange by Kelex 100 at a heptane-water interface},
author = {McCulloch, J K and Perera, J M and Kelly, E D and White, L R and Stevens, G W and Grieser, F},
abstractNote = {A study of the kinetics of Cu{sup 2+} 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 Cu{sup 2+}-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 Cu{sup 2+} from water into heptane could be accounted for using a simple one-dimensional diffusion model coupled with a reaction-limited interaction between Cu{sup 2+} and Kelex 100. Rate constants for the reaction of Kelex 100 and Cu{sup 2+} at a model interface were obtained from stopped flow experiments using a neutral micelle (C{sub 12}E{sub 8}) system. These rate constants were used to model the reaction between Cu{sup 2+} and Kelex 100 at the heptane-water interface.},
doi = {10.1006/jcis.1996.0635},
url = {https://www.osti.gov/biblio/419828}, journal = {Journal of Colloid and Interface Science},
number = 2,
volume = 184,
place = {United States},
year = {Wed Dec 25 00:00:00 EST 1996},
month = {Wed Dec 25 00:00:00 EST 1996}
}