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Russian Journal of Physical Chemistry A

, Volume 90, Issue 6, pp 1238–1243 | Cite as

Diffusion kinetics of the ion exchange of benzocaine on sulfocationites

  • O. G. Al’tshulerEmail author
  • G. Yu. Shkurenko
  • A. A. Gorlov
  • G. N. Al’tshuler
Physical Chemistry of Surface Phenomena
  • 33 Downloads

Abstract

The theory of the ion exchange kinetics on strong acid cationites with the participation of weak electrolytes is discussed. The kinetics of desorption of benzocaine in the protonated and molecular forms from strong acid cationites, sulfonated polycalixarene, and KU-23 30/100 sulfocationite, is studied experimentally. It is shown that the flow of protonated benzocaine from cationite upon desorption proceeding by the ion-exchange mechanism is more intense than upon desorption of nonionized benzocaine molecules. It is established that the diffusion coefficient of benzocaine cations is (1.21 ± 0.23) × 10−12 m2/s in KU-23 30/100 sulfocation and (0.65 ± 0.06) × 10−13 m2/s in sulfonated polycalixarene, while the diffusion coefficient of benzocaine molecules is (0.65 ± 0.15) × 10−14 m2/s in sulfonated polycalixarene.

Keywords

ion exchange kinetics sulfocationites benzocaine diffusion 

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Copyright information

© Pleiades Publishing, Ltd. 2016

Authors and Affiliations

  • O. G. Al’tshuler
    • 1
    Email author
  • G. Yu. Shkurenko
    • 1
  • A. A. Gorlov
    • 1
  • G. N. Al’tshuler
    • 1
  1. 1.Institute of Coal Chemistry and Materials ChemistrySiberian Branch, Russian Academy of SciencesKemerovoRussia

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