Mn and Co catalysts (≈10 wt.% as MnO2 or Co3O4) supported on Al-pillared clays (two saponites and a montmorillonite) have been
prepared by wetness impregnation, using complex salts of the metals (Co(II) acetylacetonate, tris(ethylenediamine) Co(III) chloride, Mn(II)
acetylacetonate and Mn(III) acetate dihydrate) as precursors.