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The surface structure of catalysts activated with hydrogen donors as elucidated by multinuclear solid-state NMR
M A Aramendía1, V Borau, C Jiménez
1Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Córdoba, Spain.
Solid State Nuclear Magnetic Resonance
|August 6, 2000
Abstract:
1H, 27Al and 31P MAS, and 13C and 29Si CP/MAS NMR spectroscopies, were used to characterize catalysts of Pd supported on various solids including SiO2, AlPO4 and Mg3(PO4)2 that were activated with the chiral hydrogen-donor limonene. The above-mentioned techniques were used to check for the formation of an organopalladium complex between Pd2+ atoms and the olefin bonds in the limonene molecule on the catalyst surface. The results are compared with those obtained for catalysts activated in a hydrogen stream.