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Selective production of 1,2-propanediol by hydrogenolysis of glycerol over bimetallic Ru–Cu nanoparticles supported on TiO2

Paper ID Volume ID Publish Year Pages File Format Full-Text
39593 45828 2014 8 PDF Available
Title
Selective production of 1,2-propanediol by hydrogenolysis of glycerol over bimetallic Ru–Cu nanoparticles supported on TiO2
Abstract

•Bimetallic Ru–Cu/TiO2 catalysts were investigated in the hydrogenolysis of glycerol.•The addition of Cu to Ru/TiO2 enhanced the selectivity toward 1,2-PDO.•Cu atoms presumably diluted large Ru ensembles that facilitated CC bond cleavage.•Among the bimetallic catalysts, 2.5Ru–2.5Cu/TiO2 exhibited the best performance.

A series of TiO2 supported Ru–Cu bimetallic catalysts was investigated for the hydrogenolysis of glycerol. The catalysts were characterized by H2 chemisorption, X-ray diffraction (XRD), scanning transmission electron microscopy (STEM/EDS) and X-ray photoelectron spectroscopy (XPS). The addition of copper led to an increase in the selectivity to 1,2-propanediol. The highest activity and selectivity was observed for a 1:1 Cu/Ru mass ratio. The results were explained in terms of the interaction between Ru and Cu. Copper diluted large Ru ensembles that are responsible for CC bond cleavage leading to ethylene glycol production instead of the desired 1,2-propanediol. The presence of Cu also inhibited the deactivation exhibited by monometallic Ru. Among all the catalysts, the 2.5Ru–2.5Cu/TiO2 catalyst exhibited the best performance in the hydrogenolysis of glycerol.

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Keywords
Ruthenium; Copper; Glycerol; 1,2-Propanediol; Deactivation
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Selective production of 1,2-propanediol by hydrogenolysis of glycerol over bimetallic Ru–Cu nanoparticles supported on TiO2
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 482, 22 July 2014, Pages 137–144
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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