Manganiferous polyoxometallates, synthesis and use thereof

PCT No. PCT/EP96/03669 Sec. 371 Date Apr. 23, 1998 Sec. 102(e) Date Apr. 23, 1998 PCT Filed Aug. 20, 1996 PCT Pub. No. WO97/07886 PCT Pub. Date Mar. 6, 1997The invention is directed to manganese-containing polyoxometallates of the formula (1)(Q)q(MnpAaXxYyMmOdZz(H2O)b)cH2O(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, PR1R2R3R4 and NR1R2R3R4 where R1, R2, R3 and R4=H or C1-C20-alkyl, C5-C8-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-, F-, Cl-, Br-, I-, N3-, NO3-, ClO4-, NCS-, SCN-, PF6-, RSO3-, RSO4-, CF3SO3-, BR4-, BF4-, OAc-, where R=H, C1-C20-alkyl, C5-C8-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.