Abstract

Cobalt and zinc ferrocyanides have shown remarkable adsorption of aromatic amines such as aniline, p-chloroaniline, and p-toluidine. Among the two ferrocyanides cobalt ferrocyanide has been found to be a better adsorbent and the observed adsorption trend follows a pattern, p-toluidine > aniline > p-chloroaniline. The infrared spectral studies of the adsorption product suggested that adsorption of amines on metal ferrocyanide is probably taking place due to coordination of amine to the outer metal ions of metal ferrocyanide.

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