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Alexander Kromer and Prof. Dr. Emil Roduner Catalytic Oxidation of Benzene on Liquid Ion-Exchanged Cu,H(Na)/ZSM-5 and Cu,H(Na)/Y Zeolites: Spin Trapping of Transient Radical Intermediates ChemPlusChem 78

Article first published online: 21 JAN 2013 | DOI: 10.1002/cplu.201200285

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The zeolites ZSM-5 and Y were exchanged with copper ions, with the aim to oxidize benzene with molecular oxygen at ambient temperature in cyclohexane solution. Transient radical intermediates were detected in high yield using the spin trap technique. The Cu,H/ZSM-5 acts as a redox/Brønsted acid bifunctional catalyst and shows high activity for radical formation. Remarkably over 30 % of the benzene was converted into radicals (DMPO=5,5-dimethyl-1-pyrroline-N-oxide).

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