Influence of the polymer matrix on the development and aging of nickel(II)-and cobalt(II)-containing catalysts in the liquid-phase oxidation of the sulfide anion with dioxygen

The development and aging effects for Ni(II)-and Co(II)-containing catalysts involved in the oxidation of the sulfide ion with dioxygen depend on the nature of the active metal ion and on whether or not the support (polyacrylamide hydrogel) is present. The development time depends on the sulfide phase formation conditions and is note correlated with the catalytic properties of nickel an cobalt sulfides. Increasing the extent of cross-linking of the gel from 1 to 10% does not produce any significant effect on the activity and stability of the catalyst.