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Dendrimer-stabilized bimetallic Pd/Au nanoparticles: Preparation, characterization and application to vinyl acetate synthesis

Paper ID Volume ID Publish Year Pages File Format Full-Text
50648 46806 2014 5 PDF Available
Title
Dendrimer-stabilized bimetallic Pd/Au nanoparticles: Preparation, characterization and application to vinyl acetate synthesis
Abstract

•Dendrimer-stabilized bimetallic Pd/Au nanoparticles were prepared.•Particle size is controlled by dendrimer:metal ratio and dendrimeric scaffold.•The alloy structure was confirmed by UV–vis spectroscopy, XRPD and TEM imaging.•Immobilized Pd/Au nanoparticles are active catalysts in vinyl acetate synthesis.

The preparation, characterization and a novel application to vinyl acetate synthesis of dendrimer-stabilized Pd/Au nanoparticles are described. The nanoparticles were synthesized by co-precipitation of aqueous Pd2 +/Au3 + salt solutions with hydrazine in the presence of (poly)amidoamine (PAMAM)-based dendrimers functionalized with terminal ethylene glycol ethers. Characterization by transmission electron microscopy and UV–vis spectroscopy confirmed that alloyed Pd/Au nanoparticles with a mean diameter of 6.0 (± 1.2) to 10.4 (± 1.7) nm were formed. After nanoparticle immobilization onto a silica support and thermal dendrimer removal, the resulting materials are high active catalysts in ethylene acetoxylation to vinyl acetate monomer with a productivity of 2.1 kgVAM kgcat− 1 h− 1.

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Keywords
CXTYPRRECNROAJ-UHFFFAOYSA-N; RBFWQSOVMDFFRC-UHFFFAOYSA-N; XTXRWKRVRITETP-UHFFFAOYSA-NDendrimer-stabilized Pd/Au nanoparticles; Vinyl acetate synthesis; Silica supported Pd/Au catalyst; TEM
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Dendrimer-stabilized bimetallic Pd/Au nanoparticles: Preparation, characterization and application to vinyl acetate synthesis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 57, 5 December 2014, Pages 78–82
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us