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An electroless deposition technique for the synthesis of highly active and nano-sized Pd particles on silica nanosphere

Paper ID Volume ID Publish Year Pages File Format Full-Text
55510 47056 2012 4 PDF Available
Title
An electroless deposition technique for the synthesis of highly active and nano-sized Pd particles on silica nanosphere
Abstract

A simple methodology to synthesize uniform and nano-sized Pd particles supported on silica support has been developed by the electroless deposition technique using Sn2+ ion, in which Pd precursor can be interacted directly with the Sn2+ ion, and subsequently transformed into Pd nanoparticles. Characterization by TEM analysis proved that the sizes of the Pd nanoparticles using the electroless deposition technique (eld-Pd/SiO2(Sn)) were quite uniform with smaller size compared with that prepared by the conventional impregnation method (imp-Pd/SiO2). Their catalytic applications for the hydrogenation of nitrobenzene and the direct synthesis of H2O2 from H2 and O2 gases were investigated and it is demonstrated that eld-Pd/SiO2(Sn) prepared by the electroless deposition technique was shown to perform significantly better activity than the imp-Pd/SiO2 owing to its uniform and nano-sized Pd particles.

Graphical abstractPd/SiO2 catalysts prepared by (A) impregnation method and (B) electroless deposition method.Figure optionsDownload full-size imageDownload high-quality image (190 K)Download as PowerPoint slideHighlights► We employed electroless deposition for preparing Pd/SiO2 catalyst (eld-Pd/SiO2). ► The eld-Pd/SiO2 was compared with the catalyst prepared by impregnation (imp-Pd/SiO2). ► The size of Pd particles of eld-Pd/SiO2 was quiet uniform with smaller. ► The eld-Pd/SiO2 was shown to perform better activity than the imp-Pd/SiO2► The electroless deposition technique was proven to be a very attractive method.

Keywords
Electroless deposition; Pd supported catalyst; Hydrogenation of nitrobenzene; Direct synthesis of hydrogen peroxide
First Page Preview
An electroless deposition technique for the synthesis of highly active and nano-sized Pd particles on silica nanosphere
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 185, Issue 1, 20 May 2012, Pages 109–112
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis