| abstract |
The invention relates to a novel manganese oxidation catalyst of the general formula: (LMnXn)S wherein: Mn is manganese; L is a triazacycloalkane, the carbon skeleton thereof comprising at least 6 C atoms; substituted on two of the three N atoms by a noncoordinating substituent, and comprising a covalent link to a support S; X is a charge compensating anion selected from the group comprising: Cl?-, Br-, F-, I-, CN-, NCS-, N¿3-, ClO4-, NO3?-, RCOO-, RO-, OH-, O¿2?2-, O2-, OOH-, SO¿42-, HSO¿4?-, PO43-, HPO¿4?2-, H2PO4-, RSO3-, RSO4-, B4O72-, oxalate, fumarate, maleate, PF¿6?-, BF4-; n has any value between 0 and 4; S is a solid support material, that is linked to L via a covalent tether, the support material being selected from the following groups: oxides, mixed oxides, zeolites, clays, soluble or insoluble organic polymers, or mixed organic-inorganic solids and to a method for its preparation and further to a method for epoxidation and/or dishydroxylation of olefins in the presence of such a catalyst. |