Russian Journal of Electrochemistry

, Volume 41, Issue 2, pp 182–188 | Cite as

Kinetics of facilitated proton transfer by polyether 18-crown-6 across the water-1,2-dichloroethane interface

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Abstract

The kinetics of facilitated proton transfer by polyether 18-crown-6 across the water-1,2-dichloroethane interface has been investigated by cyclic voltammetry and ac impedance. It was found that rate apparent constant is quite similar for the several concentrations of 18-crown-6 used in the experiments, the rate constant values (k s ) were in the range: 0.028, 0.031, 0.027, and 0. 03 cm/s for 0.1, 0.15, 0.2, and 0.25 mM of 18-crown-6.

A formal transfer potential of Δ0wϕi0′= 0.01 V was found for the facilitated proton transfer by 18-crown-6 at the water-1,2-dichloroethane interface; this value remained constant in the range of concentration considered in this work. According to the kinetic results, an interfacial reaction between the proton and the polyether 18-crown-6 is discussed in which the polyether does not transfer into the aqueous phase, in the time scale of the experiments. As a consequence, it can be concluded that the solvation and desolvation of ligand and proton play an important role in the rate-determining step.

Key words

interface of two immiscible electrolyte solutions 18C6 ac impedance facilitated proton transfer 
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REFERENCES

  1. 1.
    Koryta, J., Electrochim. Acta, 1979, p. 293.Google Scholar
  2. 2.
    Kontturi, A.K., Kontturi, K., and Schiffrin, D.J., J. Electroanal. Chem., 1988, vol. 255, p. 331.Google Scholar
  3. 3.
    Kontturi, A.K., Kontturi, K., and Samec, Z., Acta. Chem. Scand., 1990, vol. 42, p. 192.Google Scholar
  4. 4.
    Schiffrin, D.J., Chen, Y., Silva, et al. Hydrometallurgy,1994, p. 665.Google Scholar
  5. 5.
    Wilke, S. and Wang, H., J. Electroanal. Chem., 1999,vol. 47, p. 59.Google Scholar
  6. 6.
    Kudo, Y., Takeda, Y., Matsuda, H., et al., J. Electroanal. Chem., 1995, vol. 396, p. 333.Google Scholar
  7. 7.
    Heberle, J., Riesle, J., Thiedemann, G., et al., Nature,1994, vol. 370, p. 379.Google Scholar
  8. 8.
    Sabela, A., Marecek, V., Koryta, J., et al., Collect. Czech. Chem. Commun., 1994, vol. 59, p. 1287.Google Scholar
  9. 9.
    Homolka, D., Marecek, V., Samec, Z., et al., J. Electroanal. Chem., 1984, vol. 163, p. 159.Google Scholar
  10. 10.
    Makrlik, E., Ruth, W., and Vanysek, P., Z. Phys. Chem., Leipzig, 1984, vol. 265, p. 1256.Google Scholar
  11. 11.
    Reymond, F., Steayaert, G., Carrupt, P.A., et al., J. Am. Chem. Soc., 1996, vol. 118, p. 11951.Google Scholar
  12. 12.
    Reymond, F., Steayaert, G., Carrupt, P.A., et al., Helv. Chim. Acta, 1996, vol. 79, p. 101.Google Scholar
  13. 13.
    Reymond, F., Courtois, V.C., Steayaert, G., et al.,J. Electroanal. Chem., 1999, vol. 262, p. 235.Google Scholar
  14. 14.
    Cheng, Y. and Schiffrin, D.J., J. Electroanal. Chem.,1997, vol. 429, p. 37.Google Scholar
  15. 15.
    Tan, S.N. and Girault, H.H., J. Electroanal. Chem.,1992, vol. 332, p. 101.Google Scholar
  16. 16.
    Wandlowki, T., Marecek, V., and Samec, Z., J. Electroanal. Chem., 1988, vol. 242, p. 291.Google Scholar
  17. 17.
    Cheng, Y. and Schiffrin, D.J., J. Chem. Soc., Faraday Trans., 1993, vol. 89, p. 199.Google Scholar
  18. 18.
    Osaka, T., Kakutani, T., and Senda, M., Bull Chem. Soc. Jpn., 1984, vol. 57, p. 370.Google Scholar
  19. 19.
    Cheng, Y., Cunnane, V.J., Schiffrin, D.J., et al., J. Chem. Soc., Faraday Trans., 1991, vol. 87, p. 107.Google Scholar
  20. 20.
    Wiles, M.C., Vandernoo, T.J., Schiffrin, D.J., J. Electroanal. Chem., 1990, vol. 281, p. 231.Google Scholar
  21. 21.
    Cunnane, V.J., Schiffrin, D.J., Beltran, C., et al., J. Electroanal. Chem., 1988, vol. 247, p. 203.Google Scholar
  22. 22.
    Czapkiewicz, J. and Czapkiewicz-Tutaj, B., J. Chem. Soc., Faraday Trans. 1, 1980, vol. 76, p. 1663.Google Scholar
  23. 23.
    Homolka, D., Marecek, V., Samnec, Z., et al., J. Electroanal. Chem., 1984, vol. 163, p. 159.Google Scholar
  24. 24.
    Girault, H.H. and Schiffrin, D.J., in Electroanalytical Chemistry, Bard, A.J., Ed., New York: Marcel Dekker,1989, vol. 15, p. 1.Google Scholar
  25. 25.
    Bard, A.J. and Faulkner, L.R., Electrochemical Methods: Fundamentals and Applications, New York: Wiley, 1980, p. 153.Google Scholar
  26. 26.
    Wandlowskin, T., Marecek, V., Holub, K., et al., J. Phys. Chem., 1989, vol. 93, p. 8204.Google Scholar
  27. 27.
    Yuan, Y., Su, B., and Shao, Y.H., Chem. J. Chin. Univ.-Chin.,2001, vol. 22, p. 1819.Google Scholar
  28. 28.
    Takeda, Y., Kawarabayashi, A., Endo, K., et al., Anal. Sci., 1998, vol. 14, p. 215.Google Scholar

Copyright information

© MAIK “Nauka/Interperiodica” 2005

Authors and Affiliations

  • M. Velázquez-Manzanares
    • 1
  • J. Amador-Hernández
    • 1
  1. 1.Universidad del MarCiudad UniversitariaOaxacaMéxico

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