Preparation, characterisation and catalytic hydrogenation properties of palladium supported on C60

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Abstract
A C 60 -supported Pd catalyst has been prepared by reaction between C 60 and Pd(OAc) 2 (PPh 3 ) 2 in toluene, to give the complex C 60 [Pd(OAc) 2 (PPh 3 )] 3 , followed by H 2 treatment at 523 K for 4 h. Catalytic quantities (1 mol%) promote hydrogenation of diphenylacetylene, phenylacetylene, cyclohexene and hex-1-ene to give 100% conversion to 1,2-diphenylethane, phenylethane, cyclohexane and hexane within 18, 13, 21 and 12 min, respectively. Hydrogenation of the same substrates under similar conditions using Pd on activated charcoal (10%) as catalyst gives similar yields but at a longer time (20, 18, 27 and 15 min, respectively). Both the Pd-C 60 catalyst and its precursor were characterised by thermogravimetry (TG), FTIR, mass spectrometry (MS), powder XRD, X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM).

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