Original scientific paper

Monodispersed Chromium(III) Hydroxide Particles – Exchangeability of Sulphate Ions

Ryszard Sprycha ; Sun Chemical Corporation, Technical Center, 631 Central Ave, Carlstadt, NJ 07072, USA
Jerzy Jablonski ; Department of Radiochemistry and Colloid Chemistry, Faculty of Chemistry, Maria Curie-Sklodowska University, Pl. M. C. Sklodowskiej 3, 20031 Lublin, Poland
Jerzy Szczypa ; Department of Radiochemistry and Colloid Chemistry, Faculty of Chemistry, Maria Curie-Sklodowska University, Pl. M. C. Sklodowskiej 3, 20031 Lublin, Poland

Abstract

Kinetics of ligand exchange between sulphate ions (present in the core of monodispersed chromium hydroxide particles in the form of chromium basic sulphate) and hydroxyl ions has been studied. In addition, the effect of pH on the extent of this exchange has been investigated. Preliminary results showed that the rate of exchange is relatively high and substantially exceeds the rate for water exchange described in the literature for soluble [Cr(H₂O)₆]3+ species. This observation contradicts the suggestion by some authors1 that the rate of SO₄2-/OH- ligand exchange at the solid/liquid interface is very slow.

Keywords

Hrčak ID:

132445

URI

https://hrcak.srce.hr/132445

Publication date:

1.12.1998.

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