کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
68000 | 48500 | 2007 | 5 صفحه PDF | دانلود رایگان |
The original palladium colloidal suspensions with an average size of 2.7 nm have been synthesised by reducing Na2PdCl4 with sodium borohydride and were stabilized by water soluble N,N-dimethyl-N-cetyl-N-(2-hydroxyethyl)ammonium chloride salt. The catalytic hydrogenation and dehalogenation of various halogenoarenes have been investigated with this aqueous suspension of palladium nanoparticles and compared with the well-known rhodium suspension. The influences of the halogen fragment and the experimental conditions have also been studied. It was observed that the kinetics and selectivity of the competitive dehalogenation/hydrogenation depend on the nature of metal colloids and the hydrogen pressure.
The present work describes the synthesis of the surfactant-stabilized aqueous palladium nanoparticle suspension. The catalytic hydrogenation and dehalogenation of various halogenoarenes have been investigated with Pd and Rh nanoparticles under mild pressure and temperature. The competitive dehalogenation/hydrogenation was discussed in the light of the nature of metal.Figure optionsDownload as PowerPoint slide
Journal: Journal of Molecular Catalysis A: Chemical - Volume 266, Issues 1–2, 2 April 2007, Pages 221–225