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Abstract

The invention is directed to manganese-containing polyoxometallates of the formula (1) (Q).sub.q (Mn.sub.p A.sub.a X.sub.x Y.sub.y M.sub.m O.sub.d Z.sub.z (H.sub.2 O).sub.b)cH.sub.2 O (1) where Q is one or more cations selected from the group consisting of H, Li, K, Na, Rb, Cs, Ca, Mg, Sr, Ba, Al, PR.sup.1 R.sup.2 R.sup.3 R.sup.4 and NR.sup.1 R.sup.2 R.sup.3 R.sup.4 where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 =H or C.sub.1 -C.sub.20 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl or aryl; Mn is manganese; A is a heterometal and is one or more transition metals from transition groups II to VIII apart from Zn, in particular Ru, V, Ti, Zr, Cr, Fe, Co, Cu, Sn, Ni, Re or Os; X is one or more elements selected from the group consisting of Ga, B, P, Si, Ge, As, F, Cl, Br and I; Y is Sb, S, Te, Se and Bi; M is one or more transition metals selected from the group consisting of Mo, W, Nb, Ta and V; Z is one or more anions selected from the group consisting of OH.sup.-, F.sup.-, Cl.sup.-, Br.sup.-, I.sup.-, N.sub.3.sup.-, NO.sub.3.sup.-, ClO.sub.4.sup.-, NCS--, SCN--, PF.sub.6.sup.-, RSO.sub.3.sup.-, RSO.sub.4.sup.-, CF.sub.3 SO.sub.3.sup.-, BR.sub.4.sup.-, BF.sub.4.sup.-, OAc.sup.-, where R=H, C.sub.1 -C.sub.20 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl or aryl. The indexes q, p, a, x, y, m, d, z and the numbers b and c are defined in the specification. The oxidation catalyst according to the invention is particularly effective in activating peroxidic compounds and oxygen.

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First Claim