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Carbon nanofiber-supported palladium nanoparticles as potential recyclable catalysts for the Heck reaction

Paper ID Volume ID Publish Year Pages File Format Full-Text
43175 45957 2009 8 PDF Available
Title
Carbon nanofiber-supported palladium nanoparticles as potential recyclable catalysts for the Heck reaction
Abstract

5 wt% Pd catalysts supported on platelet carbon nanofibers has been prepared by incipient wetness impregnation. Both the calcination and the reduction temperature have a significant effect on the dispersion of palladium and it was found that about 3 nm sized Pd nanoparticles can be obtained at a calcination and reduction temperature of 250 °C and 150 °C, respectively. Pd catalysts have been applied to catalyze Heck reactions of various activated and non-activated aryl substrates. The activity increased exponentially with a decrease in Pd particle size. The high surface area, mesoporous structure of carbon nanofiber and highly dispersed palladium species on carbon nanofibers makes up one of the most active and reusable heterogeneous catalysts for Heck coupling reactions. Pd nanoparticles supported on platelet CNFs appear to be an excellent catalyst due to high activity, low sensitivity towards oxygen, almost no or low issues with leaching and high stability in multi-cycles.

Graphical abstractPd catalysts (5 wt%) supported on platelet carbon nanofibers have been prepared by incipient wetness impregnation and applied to catalyze Heck coupling reaction of various activated and non-activated aryl substrates. The activity increased exponentially with a decrease in Pd particle size. The high surface area, mesoporous structure of carbon nanofibers and highly dispersed palladium species on carbon nanofibers make up one of the most active and reusable heterogeneous catalysts for Heck coupling reactions.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Palladium; Carbon nanofiber; Heterogeneous catalysis; Heck coupling reactions
First Page Preview
Carbon nanofiber-supported palladium nanoparticles as potential recyclable catalysts for the Heck reaction
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 352, Issues 1–2, 15 January 2009, Pages 243–250
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis