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Hydrogenolysis through catalytic transfer hydrogenation: Glycerol conversion to 1,2-propanediol

Paper ID Volume ID Publish Year Pages File Format Full-Text
55126 47041 2012 10 PDF Available
Title
Hydrogenolysis through catalytic transfer hydrogenation: Glycerol conversion to 1,2-propanediol
Abstract

Important biorefinery processes imply hydrogenolysis reactions where high hydrogen pressures are required. As most of the nowadays available hydrogen gas is produced from fossil fuels there are great incentives to develop alternative technologies able to both substitute non-renewable reactants and operate at lower severity conditions. The use of hydrogen donor molecules from renewable origin can be a promising alternative to tackle simultaneously with both objectives. In the present study the use of methanol, 2-propanol and formic acid in the glycerol hydrogenolysis process to obtain 1,2-propanediol was investigated using a Ni–Cu/Al2O3 catalyst, prepared by sol–gel method, and under N2 atmosphere. A semi-continuous set-up was designed in which the donor solution was continuously fed into the autoclave reactor containing the glycerol aqueous phase. The best results in terms of glycerol conversion and 1,2-propanediol selectivity were obtained with formic acid.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (87 K)Download as PowerPoint slideHighlights► Glycerol hydrogenolysis under N2 pressure using hydrogen donor molecules. ► Semi-continuous batch process with continuous pumping of the donor. ► The best results were reported with formic acid that can be obtained from biomass. ► 1,2-propanediol was selectively formed on Ni–Cu/Al2O3 catalyst.

Keywords
Glycerol; 1,2-Propanediol; Hydrogenolysis; In situ hydrogen; Heterogeneous catalysis
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Hydrogenolysis through catalytic transfer hydrogenation: Glycerol conversion to 1,2-propanediol
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 195, Issue 1, 15 November 2012, Pages 22–31
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