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Cation pairing in kaolin-electrolyte systems

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Summary

The Bjerrum theory of ion pair formation is combined with the Gouy theory in order to calculate the amount of cations paired in clay double layers. It is shown that the paired amount increases with the decrease in electrolyte concentration present in clay systems. The pairing of cations causes the surface potential of particles to vary within a small range with some decrease with the decrease in electrolyte concentration. The pairing effect is used to explain the values of zeta potentials calculated from electric conductance measurements in clay electrolyte systems.

Zusammenfassung

Die Bjerrumsche Theorie der Ionenpaarbildung wird kombiniert mit der Gouy-Theorie, um den Betrag an Kationen-Paaren in Ton-Doppelschichten zu berechnen. Es wird gezeigt, da\ die Paarbildung steigt mit Abnahme der Elektrolytkonzentration in den Ton-systemen. Die Kationen-Paare verursachen, da\ das OberflÄchenpotential der Teilchen in einem kleinen Ma\e mit einer Abnahme variiert bei Abnahme der Elektrolytkonzentration. Die Paarbildung wird verwendet, um die Werte des Zetapotentials, berechnet aus der elektrolytischen LeitfÄhigkeit in Ton-Elektrolytsystemen, zu erklÄren.

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  1. A. K. Helmy, Hussein Sadek, S. K. Doss & Th. F. Tadros

    Present address: Faculty of Agriculture and the Chemistry Department, Faculty of Science, Alexandria University, Egypt

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    1. A. K. Helmy
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    2. Hussein Sadek
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    3. S. K. Doss
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    4. Th. F. Tadros
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    Helmy, A.K., Sadek, H., Doss, S.K. et al. Cation pairing in kaolin-electrolyte systems. Kolloid-Z.u.Z.Polymere 212, 142–145 (1966). https://doi.org/10.1007/BF01553080

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    • DOI: https://doi.org/10.1007/BF01553080

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