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Selective oxidation of glycerol with oxygen in base-free solution over MWCNTs supported PtSb alloy nanoparticles

Paper ID Volume ID Publish Year Pages File Format Full-Text
46279 46436 2012 9 PDF Available
Title
Selective oxidation of glycerol with oxygen in base-free solution over MWCNTs supported PtSb alloy nanoparticles
Abstract

Multiwall carbon nanotubes (MWCNTs) supported PtSb alloy nanoparticles were prepared and used in the selective oxidation of glycerol to dihydroxyacetone (DIHA) in a base-free aqueous solution. The structure and morphology of the prepared PtSb/MWCNTs catalyst were characterized and compared with that of Pt-Bi/MWCNTs. It was found that Sb homogenously entered into the lattice of Pt and PtSb alloy nanoparticles formed in PtSb/MWCNTs, but Pt particles in Pt-Bi/MWCNTs were wrapped by a layer of Bi2O2CO3. PtSb/MWCNTs is extremely active for the selective oxidation of glycerol to DIHA. The turnover frequency of surface Pt atoms in PtSb/MWCNTs increased from 341.5 (of Pt/MWCNTs) to 878.1 h−1. At the same time, DIHA is relatively ‘stable’ over the homogenous PtSb alloy nanoparticles, which also depressed the cleavage of CC.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► PtSb alloy nanoparticles were prepared on the surface of MWCNTs. ► PtSb alloy nanoparticles are highly active for selective oxidation of glycerol. ► TOF of Pt in PtSb/MWCNTs is 2.6 times of that of Pt/MWCNTs at low glycerol conversion. ► CC cleavage over PtSb alloy is lower than Pt and Pt-Bi/MWCNTs.

Keywords
Glycerol oxidation; PtSb alloy, MWCNTs; Base-free; Dihydroxyacetone
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Selective oxidation of glycerol with oxygen in base-free solution over MWCNTs supported PtSb alloy nanoparticles
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 127, 30 October 2012, Pages 212–220
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
Any Questions? feel free to contact us