Palladium metal nanoparticles stabilized by ionophilic ligands in ionic liquids: synthesis and application in hydrogenation reactions. Issue 2 (16th October 2014)

• Record Type: Journal Article
• Authors: Leal, Bárbara C.; Consorti, Crestina S.; Machado, Giovanna; Dupont, Jairton
• Is Part Of: Catalysis science & technology. Volume 5:Issue 2(2015:Feb.)
• Page Start: 903
• Page End: 909
• Publication Date: 2014-10-16
• Subjects: Catalysis -- Periodicals; 541.395
• DOI: 10.1039/c4cy01116c
• Languages: English
• ISSNs: 2044-4753

Abstract

Abstract : The selectivity of the hydrogenation of 1, 3-cyclohexadiene and 2-pentyne by Pd nanoparticles in an ionic liquid can be modulated by the addition of N- or P-containing ionophilic ligands. Abstract : The reduction of [Pd(acac)(COD)]BF4 (acac = acetylacetonate; COD = 1, 5-cyclooctadiene), dissolved in BMI·BF4, in the presence of P- or N-containing ionophilic ligands by H2 yields "soluble" and stable [Pd(0)] n nanoparticles (NPs). These ionic liquid soluble NPs are active and selective catalysts for the hydrogenation of 1, 3-dienes and alkynes under mild reaction conditions. Selectivities up to 87% to cis -2-pentene and 95% conversion were obtained using Pd NPs modified with 1-(3-(diphenylphosphino)propyl)-2, 3-dimethyl-1 H -imidazol-3-ium N -bis(trifluoromethylsulfonyl)imide in 1- n -butyl-3-methylimidazolium tetrafluoroborate.