Bipyridine-functionalized poly(lactic acid) (PLA)-based stereocomplexes were employed to stabilize Pd-nanoparticles (NPs). The well defined heterogeneous catalysts were suitable to catalyze the partialhydrogenation reaction (i.e. p(H2) = 3 bar, 25 and 60◦C) of phenylacetylene and diphenylacetylene in THFto give styrene and cis-stilbene with a chemoselectivity of 96% and 91%, respectively. Since the polymersupport revealed stable under real catalytic conditions, stabilizing also efficiently the Pd-NPs in the courseof the catalytic reaction, the heterogeneous catalytic system was easily recyclable. The catalytic activityas well as the chemoselectivity of the supported catalyst proved to be comparable in four consecutivecatalytic cycles even by recovering the catalyst in air atmosphere after each cycle.
Pd-nanoparticles supported onto functionalized poly(lactic acid)-based stereocomplexes for partial alkyne hydrogenation / Giorgio Petrucci; Werner Oberhauser; Mattia Bartoli; Guido Giachi; Marco Frediani; Elisa Passaglia; Laura Capozzoli; Luca Rosi. - In: APPLIED CATALYSIS A: GENERAL. - ISSN 0926-860X. - STAMPA. - 469:(2014), pp. 132-138. [10.1016/j.apcata.2013.09.053]
Pd-nanoparticles supported onto functionalized poly(lactic acid)-based stereocomplexes for partial alkyne hydrogenation
PETRUCCI, GIORGIO;BARTOLI, MATTIA;GIACHI, GUIDO;FREDIANI, MARCO;ROSI, LUCA
2014
Abstract
Bipyridine-functionalized poly(lactic acid) (PLA)-based stereocomplexes were employed to stabilize Pd-nanoparticles (NPs). The well defined heterogeneous catalysts were suitable to catalyze the partialhydrogenation reaction (i.e. p(H2) = 3 bar, 25 and 60◦C) of phenylacetylene and diphenylacetylene in THFto give styrene and cis-stilbene with a chemoselectivity of 96% and 91%, respectively. Since the polymersupport revealed stable under real catalytic conditions, stabilizing also efficiently the Pd-NPs in the courseof the catalytic reaction, the heterogeneous catalytic system was easily recyclable. The catalytic activityas well as the chemoselectivity of the supported catalyst proved to be comparable in four consecutivecatalytic cycles even by recovering the catalyst in air atmosphere after each cycle.File | Dimensione | Formato | |
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