The role of resin—transition metal complexes containing hydroxy amine ligand in hydrogen peroxide decomposition

Abstract The catalytic decomposition of hydrogen peroxide was studied in aqueous medium in the presence of cobalt(II)—ethanolamine complexes sorbed on Dowex-50W resin. Mono-, di- and triethanolamines were used as ligands. The reaction was first order with respect to [H 2 O 2 ] in all cases. The rate constant decreased with increasing degree of resin crosslinkage owing to a salting-out effect. Also, the rate constant decreased in the following order: mono->di->triethanolamine, which is the same as the order of base strength of the three amines. The activation energy decreased with increasing degree of resin crosslinkage. The other activation parameters were calculated, and the probable reaction mechanism is proposed.