New monodispersed palladium nanoparticles stabilized by poly-(N-vinyl-2-pyrrolidone): Preparation, structural study and catalytic properties

Palladium-nanoparticles on end-functionalized poly(lactic acid)-based stereocomplexes for the chemoselective cinnamaldehyde hydrogenation: Effect of the end-group

“…Pd-NPs supported onto L R were obtained by means of the MVS technique [12,18,19]. According to this latter synthesis approach a Pd-vapor was co-condensed with vapors of mesitylene and 1-hexene at À196°C.…”

“…Herein we report the synthesis of differently end-functionalized PLA-based stereocomplexes, which were subsequently employed to stabilize Pd-NPs generated by metal vapor synthesis (MVS) technique [18,19]. The obtained heterogeneous polymer-based catalysts were used in the chemoselective C@C double bond hydrogenation of cinnamaldehyde to 3-phenylpropanal.…”

Nanocatalysts for Hydrogenation Reactions

“…43 The nanoparticles were synthesized by metal vapor synthesis and stabilized with PVP at room temperature, and isolated by precipitation with diethyl ether or THF as a brown powder. Pd-NPs with different Pd/PVP ratios were synthesized by changing the reaction conditions, and the resulting nanoparticles were characterized using HRTEM and FTIR.…”

Nanocatalysts for the Heck Coupling Reactions

“…87 In a different synthetic approach, Evangelisti et al employed gas-phase metal vapor synthetic technique to synthesize 1.0-3.5 nm-diameter PVP-stabilized Pd-NPs. 88 The resulting nanoparticles were shown to catalyze the Heck reaction between aryl halides and n-butyl acrylate (acrylate/ArX = 2) at 75-125 • C under argon atmosphere, with N(n-Pr) 3 as base in N-methyl-2-pyrrolidone as organic solvent. Durap et al synthesized 4.5 nm-diameter Pd-PVP nanoparticles by reducing Pd(II) (or K 2 PdCl 4 ) in methanolic solution in the presence of PVP by using NaBH 4 as well as the methanol itself as reducing agents under refluxing conditions.…”