tA stereocomplexed poly(lactic acid)-polyethyleneglycol copolymer was synthesized and successfullyused as recyclable support for Pt nanoparticles, generated by the metal vapor synthesis technique. Theconfinement of the Pt nanoparticles were determined by thermal analysis. Hydrogenation reactionsof chlorinated aromatic nitro compounds, containing other reducible functional groups, to the corre-sponding anilines occurred with the latter supported Pt nanoparticles in MeOH under very mild reactionconditions (i.e. 30oC, p(H2) = 5.0 bar). The covalently attached polyethyleneglycol polymer significantlyincreased the catalytic activity of the supported Pt nanoparticles compared to an analogous catalyticsystem which did not contain polyethyleneglycol but the same sized Pt nanoparticles.
Platinum nanoparticles onto pegylated poly(lactic acid)stereocomplex for highly selective hydrogenation of aromaticnitrocompounds to anilines
Oberhauser Werner;Evangelisti Claudio;Passaglia Elisa;
2017
Abstract
tA stereocomplexed poly(lactic acid)-polyethyleneglycol copolymer was synthesized and successfullyused as recyclable support for Pt nanoparticles, generated by the metal vapor synthesis technique. Theconfinement of the Pt nanoparticles were determined by thermal analysis. Hydrogenation reactionsof chlorinated aromatic nitro compounds, containing other reducible functional groups, to the corre-sponding anilines occurred with the latter supported Pt nanoparticles in MeOH under very mild reactionconditions (i.e. 30oC, p(H2) = 5.0 bar). The covalently attached polyethyleneglycol polymer significantlyincreased the catalytic activity of the supported Pt nanoparticles compared to an analogous catalyticsystem which did not contain polyethyleneglycol but the same sized Pt nanoparticles.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
