Effect of the type of matrix on the electronic state of cobalt cations in impregnated catalytically active nanostructures

Physicochemical methods are used to study the electronic state of cobalt cations in nanostructures produced by thermal decomposition of salts on the surface and in the bulk of ZSM-5, Al 2 O 3 , SiO 2 , and ERI matrices. It is shown that the electronic state of cobalt is influenced by the type of matrix and cobalt–adsorbed oxygen ratio. It is established that cobalt cations can be immobilized in the tetrahedral and octahedral oxygen environment of the matrix and the oxidation state can change (Co 2+ → Co 3+ ) because of the transition from tetrahedral to octahedral coordination.