PVP-Stabilized Palladium Nanoparticles in Silica as Effective Catalysts for Hydrogenation Reactions. (17th December 2013)

• Record Type: Journal Article
• Authors: Ruas, Caroline Pires; Fischer, Daiane Kessler; Gelesky, Marcos Alexandre
• Other Names: Capobianco John A. Academic Editor.
• Is Part Of: Journal of nanotechnology. Volume 2013(2013)
• Publication Date: 2013-12-17
• Subjects: Nanotechnology -- Periodicals; Nanotechnology; Nanotechnology; Periodicals; Periodicals; 620.5
• DOI: 10.1155/2013/906740
• Languages: English
• ISSNs: 1687-9503

Abstract

Abstract : Palladium nanoparticles stabilized by poly (N-vinyl-2-pyrrolidone) (PVP) can be synthesized by corresponding Pd(acac)2 (acac = acetylacetonate) as precursor in methanol at 80°C for 2 h followed by reduction with NaBH4 and immobilized onto SiO2 prepared by sol-gel process under acidic conditions (HF or HCl). The PVP/Pd molar ratio is set to 6. The effect of the sol-gel catalyst on the silica morphology and texture and on Pd(0) content was investigated. The catalysts prepared ( ca. 2% Pd(0)/SiO2 /HF and ca. 0, 3% Pd(0)/SiO2 /HCl) were characterized by TEM, FAAS, and SEM-EDS. Palladium nanoparticles supported in silica with a size 6.6 ± 1.4 nm were obtained. The catalytic activity was tested in hydrogenation of alkenes.