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Surface and structural properties of titania-supported Ru catalysts for hydrogenolysis of glycerol

Paper ID Volume ID Publish Year Pages File Format Full-Text
41942 45905 2010 8 PDF Available
Title
Surface and structural properties of titania-supported Ru catalysts for hydrogenolysis of glycerol
Abstract

A series of catalysts with different Ru contents supported on titania were prepared by conventional impregnation (IM) and deposition–precipitation (DP) methods. These catalysts were characterized by X-ray diffraction, temperature programmed reduction, transmission electron microscopy, X-ray photoelectron spectroscopy and CO chemisorption. The catalysts were evaluated for selective hydrogenolysis of glycerol. The glycerol conversion and the selectivity towards 1,2-propanediol depend on the method of catalyst preparation and on the Ru content. The catalyst with low Ru content exhibited maximum conversion, in turn was related to its dispersion. The catalysts prepared by DP method showed stable activity even with crude glycerol containing alkali salts as impurity. The catalyst exhibited consistent activity upon reuse. The high activity of Ru/TiO2 catalyst is due to the presence of well-dispersed nano size Ru particles on titania. The low activity of the IM catalyst is because of large domains of Ru and because of the presence of residual Cl− ions.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (51 K)Download as PowerPoint slideResearch highlights▶ Titania-supported Ru is efficient catalysts for glycerol hydrogenolysis. ▶ The activity of the catalyst depends on the nature of Ru particles on titania. ▶ The structural and surface properties depend on the catalyst preparation method. ▶ The catalyst is reusable and active even for crude bio-glycerol hydrogenolysis.

Keywords
Glycerol; Ruthenium; Titania; Hydrogenolysis; 1,2-Propanediol; Deposition–precipitation
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Surface and structural properties of titania-supported Ru catalysts for hydrogenolysis of glycerol
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 384, Issues 1–2, 20 August 2010, Pages 107–114
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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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