KINETICS OF HYDROGEN-PEROXIDE DECOMPOSITION WITH FE(III) AND CR(III)-ETHANOLAMINES COMPLEXES SORBED ON DOWEX-50W RESIN

The kinetics of the H2O2 decomposition in presence of Fe(III)- and Cr( III)-complexes of mono-, di-, and triethanolamine supported on Dowex-S OW resin have been investigated. The decomposition process proceeded w ith first-order kinetics for the substrate concentration. The rate of reaction increased with increasing number of the coordinated ligands i n the metal complex as well as with increasing ligand basicity. The de composition reaction involved the formation of an intermediate active species, which converts into a peroxo-metal complex of brown, green, o r gray color. A mechanism describing the decomposition process is prop osed. (C) 1995 John Wiley & Sons, Inc.