fulltext.study @t Gmail

Hydrogenolysis of glycerol on bimetallic Pd-Cu/solid-base catalysts prepared via layered double hydroxides precursors

Paper ID Volume ID Publish Year Pages File Format Full-Text
41417 45888 2011 10 PDF Available
Title
Hydrogenolysis of glycerol on bimetallic Pd-Cu/solid-base catalysts prepared via layered double hydroxides precursors
Abstract

A series of bimetallic Pd-Cu/solid-base catalysts were prepared via thermal decomposition of PdxCu0.4Mg5.6−xAl2(OH)16CO3 layered double hydroxides precursors and used in hydrogenolysis of glycerol to 1,2-propanediol (1,2-PDO). X-ray diffraction (XRD), scanning electron microscopy (SEM) and N2O oxidation and followed H2 titration characterizations confirmed that well structured layered double hydroxides PdxCu0.4Mg5.6−xAl2(OH)16CO3 crystals could be prepared when the amount of added Pd was less than x < 0.04. Pd and Cu dispersed highly in reduced PdxCu0.4/Mg5.6−xAl2O8.6−x and Pd improved the reduction of Cu. Hydrogenolysis of glycerol proceeded easily on bimetallic Pd-Cu/solid-base catalysts than separated Pd and Cu. On Pd0.04Cu0.4/Mg5.56Al2O8.56, the conversion of glycerol and selectivity of 1,2-PDO reached 88.0 and 99.6%, respectively, at 2.0 MPa H2, 180 °C, 10 h in ethanol solution. And this catalyst is stable in five recycles. It was concluded that H2-spillover from Pd to Cu increased the activity of PdxCu0.4/Mg5.6−xAl2O8.6−x in hydrogenolysis of glycerol.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (210 K)Download as PowerPoint slideHighlights► Pd-Cu bimetallic catalyst exhibited synergistic effect for glycerol hydrogenolysis. ► This synergistic effect was attributed to hydrogen spillover from Pd to Cu. ► Glycerol hydrogenolysis performed sufficiently in ethanol solution. ► Solid base can suppress the cleavage of C–C bond in glycerol. ► Cu leaching in the polar medium would bring deactivation.

Keywords
Glycerol; Hydrogenolysis; Bimetallic Pd-Cu; Solid base; 1,2-Propanediol
First Page Preview
Hydrogenolysis of glycerol on bimetallic Pd-Cu/solid-base catalysts prepared via layered double hydroxides precursors
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
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 403, Issues 1–2, 22 August 2011, Pages 173–182
Authors
, , , , ,
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