ADSORPTION OF AROMATIC-AMINES ON METAL FERROCYANIDES

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