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A mathematical model for calculation of equilibrium solution speciations for the FeCl3-FeCl2-CuCl2-CuCl-HCl-NaCl-H2O system at 25 ‡C

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Abstract

Equilibrium solution speciation computations were performed for the FeCl-FeCl3-CuCl2-CuCl-HCl-NaCl-H2O system at 25 ‡C. In dilute solutions, complexation of Fe(III), Fe(II), and Cu(II) is insignificant but the major Cu(I) species is CuCl2 -. In concentrated solutions, FeCl 03 , FeCl 02 , and CuCl 02 are the major Fe(III), Fe(II), and Cu(II) species, and CuCl 2-3 is the most important cuprous complex. High Cu(I)/Cu(II) ratios are apparently more readily attainable in CuCl2 than in FeCl3 media. The Cu(I)/Cu(II) ratio is increased by making the solution more concentrated in any component except FeCl3 or CuCl2. Neither the ionic strength nor the total chloride concentration is a good predictor of the Cu(I)/Cu(II) ratio.

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Authors and Affiliations

  1. Mobil Oil Corporation, 98248, Ferndale, WA

    Richard T. Kimura (Process Engineer)

  2. National Semiconductor, 95051, Santa Clara, CA

    Peter A. Haunschild (Senior Process Engineer)

  3. Chemical Engineering Department, Washington State University, 99164-2710, Pullman, WA

    Knona C. Liddell (Assistant Professor)

Authors
  1. Richard T. Kimura
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  2. Peter A. Haunschild
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  3. Knona C. Liddell
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Kimura, R.T., Haunschild, P.A. & Liddell, K.C. A mathematical model for calculation of equilibrium solution speciations for the FeCl3-FeCl2-CuCl2-CuCl-HCl-NaCl-H2O system at 25 ‡C. Metall Trans B 15, 213–219 (1984). https://doi.org/10.1007/BF02667323

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  • DOI: https://doi.org/10.1007/BF02667323

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