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Selective partial biodiesel hydrogenation using highly active supported palladium nanoparticles in imidazolium-based ionic liquid

Paper ID Volume ID Publish Year Pages File Format Full-Text
40877 45869 2012 6 PDF Available
Title
Selective partial biodiesel hydrogenation using highly active supported palladium nanoparticles in imidazolium-based ionic liquid
Abstract

The low oxidative stability of biodiesel derived from polyunsaturated oils is one of the great challenges to be overcome in biodiesel technology. Here, we use a high activity catalyst Pd/ImS3-12@Al2O3, prepared by adsorption of water-prepared palladium nanoparticles on aluminum oxide, for partial biodiesel hydrogenation. The catalyst shows higher hydrogenation activity than conventional Pd/C, leading in the absence of ionic liquid (IL) to fully hydrogenated product. In the presence of BMIM·NTf2 (1-butyl-3-methylimdazolium bis(trifluoromethylsulfonyl)imide) IL the activity of the Pd/ImS3-12@Al2O3 catalyst could be controlled and selective reduction to monoene product, with large preference for formation of the cis isomer, could be achieved at low temperature and pressure, with very low catalyst loading, no detectable metal leaching and good recyclability. The partially hydrogenated biodiesel is far more stable to oxidation than the crude, without compromising its cold-flow properties.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (131 K)Download as PowerPoint slideHighlights► Heterogeneous catalyst with surfactant stabilized palladium nanoparticles on Al2O3. ► This catalyst is used for partial biodiesel hydrogenation. ► Ionic liquid as a reaction media allows selective hydrogenation of polyenes. ► Partially hydrogenated biodiesel if more stable against oxidation. ► The ionic liquid allows simple separation of products and catalyst recovery.

Keywords
Biodiesel; Fame; Palladium; Nanoparticles; Hydrogenation; Ionic liquid
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Selective partial biodiesel hydrogenation using highly active supported palladium nanoparticles in imidazolium-based ionic liquid
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 433–434, 8 August 2012, Pages 109–114
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