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Shape-dependent catalytic activity of palladium nanoparticles embedded in SiO2 and TiO2

Paper ID Volume ID Publish Year Pages File Format Full-Text
55589 47058 2012 9 PDF Available
Title
Shape-dependent catalytic activity of palladium nanoparticles embedded in SiO2 and TiO2
Abstract

Catalytic studies have shown that the activity of metal nanoparticles depends on their size and shape. Palladium nanoparticles with different morphologies have been prepared and embedded in a SiO2 and TiO2 matrix, and their catalytic performance in the solvent-free aerobic oxidation of 1-phenylethanol has been studied. The observed activity is strongly related to the exposed surface sites, being some of the active sites embedded in the matrix or blocked by residual organic species. (1 1 1)/(1 0 0) edge sites are involved in the oxidative dehydrogenation of 1-phenylethanol. The amount of these sites depends on particle morphology. Under our conditions, Pdbars–SiO2 (Pd nanobars embedded in SiO2) were found to be the most active.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (215 K)Download as PowerPoint slideHighlights► Synthesis of palladium nanoparticles with different morphologies. ► Solvent-free aerobic oxidation of 1-phenylethanol under mild conditions. ► Catalytic activity depends on particle morphology and type of support.

Keywords
Palladium nanoparticles; Different shapes; Embedded; Oxidation; Solvent-free; IR spectroscopy of CO adsorption
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Shape-dependent catalytic activity of palladium nanoparticles embedded in SiO2 and TiO2
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 180, Issue 1, 17 January 2012, Pages 59–67
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
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Price after discount Only $4.95
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Full-text PDF Download
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