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Phosphine- and ammonium-functionalized ordered mesoporous carbons as supports for cluster-derived metal nanoparticles

Paper ID Volume ID Publish Year Pages File Format Full-Text
54683 47020 2014 15 PDF Available
Title
Phosphine- and ammonium-functionalized ordered mesoporous carbons as supports for cluster-derived metal nanoparticles
Abstract

•An ordered mesoporous carbon was functionalized with ammonium or phosphine groups.•The surface functions were used as anchors for bimetallic cluster compounds.•The anchored clusters were ideal precursors of heterometallic nanoparticles.•Nanoparticles embedded within the mesopores of OMC were obtained.

An ordered mesoporous carbon (OMC) was functionalized with ammonium or chelating phosphine ligands. In both cases, the functionalization procedure started by oxidation by nitric acid treatment, followed by activation of surface carboxylic acid groups with thionyl chloride, then formation of amide bonds with diamines. The pendant amine groups were then either quaternized or further reacted with phosphine. The introduced functions were used as anchors for molecular mixed-metal clusters. These organometallic grafted species could then be thermally transformed into hetero-metallic nanoparticles (NP) embedded within the mesoporous framework. The NP/OMC nanocomposites could find application in hydrogenation heterogeneous catalysis or as electrodes in fuel cells.

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Keywords
Ordered mesoporous carbon; Functionalization; Bimetallic; Nanoparticles; Cluster
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Phosphine- and ammonium-functionalized ordered mesoporous carbons as supports for cluster-derived metal nanoparticles
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 235, 15 October 2014, Pages 112–126
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
Online Support
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