fulltext.study @t Gmail

On the peculiar recycling properties of charcoal-supported palladium oxide nanoparticles in Sonogashira reactions

Paper ID Volume ID Publish Year Pages File Format Full-Text
39595 45828 2014 6 PDF Available
Title
On the peculiar recycling properties of charcoal-supported palladium oxide nanoparticles in Sonogashira reactions
Abstract

•Preparation and characterization of Pd NPs/C and PdO NPs/C catalysts.•Discovery of the peculiar recycling properties of the PdO NPs/C catalyst.•The work addresses the issue of catalyst deactivation for the Sonogashira reaction.•Good to high yields of products were obtained with the PdO NPS/C catalyst.•This work expands the synthetic utility of heterogeneous Pd catalysts.

The enhanced recycling properties of 5% PdO NPs/C compared to 5% Pd NPs/C catalyst for the Sonogashira reaction has been unveiled. A simple preparation procedure for 5% Pd NPs/C and 5% PdO NPs/C catalysts is described along with their extensive characterizations. The correlation between the catalyst deactivation and a high content of reduced palladium species for the alkynylation of aryl iodides has been clearly identified with the monitoring of the Pd(0)/Pd(II) ratio over the recycling runs through X-ray photoelectron spectroscopy.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (142 K)Download as PowerPoint slide

Keywords
Sonogashira reaction; Recycling; Palladium oxide; Charcoal; Palladium nanoparticles
First Page Preview
On the peculiar recycling properties of charcoal-supported palladium oxide nanoparticles in Sonogashira reactions
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 482, 22 July 2014, Pages 157–162
Authors
, , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis