Palladium(0) Nanoparticles Immobilized onto Silica/Starch Composite: Sustainable Catalyst for Hydrogenations and Suzuki Coupling

Abstract

The present paper aims to give insight into the art in the field of the synthesis, characterization and applications of Pd(0) nanoparticles immobilized onto silica/starch composite (SS-PdNPs) for hydrogenations and Suzuki coupling. Metal(0) nanoparticles immobilized onto silica/starch composite [SS-MNPs] were prepared from different metal acetylacetonate complexes [Co(acac)2], [Cu(acac)2], [Pd(acac)2], [Ru(acac)3], [Mn(acac)3], [Co(acac)3] by immobilizing onto silica/starch composite, followed by reduction with NaBH4. Excellent yield of the products, reusability and the facile work-up makes SS-PdNPs a unique catalyst for the reduction of nitroarenes/carbonyl compounds, a,b unsaturated carbonyl compounds and Suzuki coupling under environmentally benign reaction conditions. All the catalysts were characterized by Fourier Transform Infra Red (FTIR), Atomic Absorption Spectroscopy (AAS) analyses, while the most active catalyst [SS-PdNPs] was further characterized by Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). Copyright © 2019 BCREC Group. All rights reserved

Palladium Supported on Bioinspired Materials as Catalysts for C–C Coupling Reactions

“…According to the procedure developed by Panah's group for the synthesis of a silicastarch substrate-derived catalyst PNP-SSS, Sodhi et al immobilized palladium nanoparticles onto the same silica starch composite (SS) by treatment with Pd(acac) 2 and NaBH 4 as the reducing agent [63]. Data obtained from TEM analysis indicated for SS-PdNPs, an average size of Pd(0) nanoparticles around 3.5 nm.…”

“…It is a natural polymer employed in the food industry as a gelling, thickening, stabilizing Scheme 13. Suzuki-Miyaura coupling of aryl bromides with phenylboronic acid promoted by palladium nanoparticles immobilized on silica-starch composite (SS-PdNPs), reported in 2019 by Sodhi and co-workers [63].…”

Palladium Nanoparticles Supported on Porous Silica Materials as Heterogeneous Catalysts of C−C Coupling and Cross‐Coupling Reactions

“…The catalytic performance of Pd 0 particles immobilized on a silica/starch composite material was investigated by Sodhi and Paul. [128] The catalyst was prepared by impregnation of a silica/ starch composite with Pd(acac) 2 in ethanol, followed by reduction of the precursor with NaBH 4 , which afforded catalyst Pd 0 -20-starch-mSiO 2 with a Pd loading of 1.8 wt%. SEM images indicated that the sample had a porous structure and Pd particles of 3.5 nm were formed.…”

Amine Functionalized Silica Coated Cotton Fabric Supported Pd(0) Nanoparticles: Synthesis, Characterization and Catalytic Application for Suzuki Cross‐Coupling and Hydrogenations

“…Sodhi et al . reported Pd(0) nanoparticles immobilized onto silica/starch composite (SS‐PdNPs) for hydrogenation of nitroarenes and α , β ‐unsaturated compounds using molecular hydrogen [29] …”