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Two series of cobalt(Ⅲ)|containing spinel catalysts were prepared by the decomposition of the corresponding nitrates. The catalysts doped with bismuth oxide exhibit a higher activity in the wet air oxidation of acetic acid than those without dopant bismuth oxide. The catalysts were investigated by XRD,TEM,ESR,UV|DRS and XPS,and the interaction between Co and Bi was studied as well. It has been found that nano|sized bismuth oxide is paved on the surface of cobalt spinel crystal and the structures of cobalt(Ⅲ)|containing spinel are still maintained. The shift of the binding energy of Bi-{%4f%-{7/2}} is related to the catalytic activity of these catalysts doped with bismuth oxide.
Two series of cobalt (Ⅲ) | containing spinel catalysts were prepared by the decomposition of the corresponding nitrates. The catalysts doped with bismuth oxide exhibit a higher activity in the wet air oxidation of acetic acid than those without dopant bismuth oxide. The catalysts were investigated by XRD, TEM, ESR, UV | DRS and XPS, and the interaction between Co and Bi was studied as well. It has been found that nano | sized bismuth oxide is paved on the surface of cobalt spinel crystal and the structures of cobalt (III) | containing spinel are still maintained. The shift of the binding energy of Bi - {% 4f % - {7/2 } } is related to the catalytic activity of these catalysts doped with bismuth oxide.