Anchored manganese and ruthenium porphyrins as catalysts in the decomposition of cyclohexyl hydroperoxide

Article abstract of DOI:10.1016/0304-5102(93)85098-E

Manganese and ruthenium porphyrins were anchored on to polystyrene beads and silica powder and tested as catalysts in the decomposition of cyclohexyl hydroperoxide. With Mn and Ru porphyrins anchored on to polystyrene approximately 30% of the peroxide was decomposed in 2 h, whereas with the porphyrins anchored on to silica, 55 and 66% of the peroxide, respectively, was decomposed. With ruthenium porphyrins anchored on to silica, better results were obtained than with non-anchored ruthenium porphyrins. Experiments with catalysts supported on polystyrene beads showed that in order to obtain a well-defined anchored catalyst, insertion of the metal must be carried out before the catalyst is anchored on to the support. Furthermore, silica powder is preferred to polystyrene beads as supporting material.