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Liquid phase chemo-selective catalytic hydrogenation of furfural to furfuryl alcohol

Paper ID Volume ID Publish Year Pages File Format Full-Text
40477 45855 2013 10 PDF Available
Title
Liquid phase chemo-selective catalytic hydrogenation of furfural to furfuryl alcohol
Abstract

Novel Cu:Zn:Cr:Zr based catalysts were developed for the hydrogenation of furfural to furfuryl alcohol. Physio-chemical characterizations of the catalysts were performed by using XRD, BET, FTIR, TPR, NH3-TPD, ICP-MS, SEM, TEM, CO-chemisorption, and XANES techniques. Among all the catalysts prepared, the catalysts Cu(3):Zn(2):Cr(1):Zr(3) and Cu(3):Zn(2):Cr(1):Zr(4), referred as Cat-C and Cat-D, respectively are the best ones to demonstrate high activity and selectivity profile. Cat-C and Cat-D exhibited 100% conversion and 96% selectivity at 170 ± 2 °C and 2 MPa of hydrogen pressure. The role of constituent metals in the catalyst was delineated. Incorporation of Zn increases the activity for furfural conversion whereas Zr contributes significantly to the selectivity of furfuryl alcohol. It was also found that Zr loading not only increases the acidity of the catalyst but also helps in the dispersion of metallic Cu. The particle size of metallic Cu was found to be in the range of 17–19 nm as confirmed by TEM, XRD and CO chemisorption techniques. XANES analysis confirmed the presence of copper in Cu0 and Cu2+ oxidation states in Cat-C (freshly reduced) and Cat-C (fresh), respectively. Hydrogenation of furfural to furfuryl alcohol follows a pseudo-first order reaction with an the apparent activation energy of 24.4 kcal/mol. Cat-C was recycled at least 4 times for the hydrogenation of furfural with no loss of activity and selectivity when compared to the fresh catalyst.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (74 K)Download as PowerPoint slideHighlights► A Cu–Cr based catalyst was modified with the addition of Zn and Zr as promoters. ► Addition of Zn increases the activity of the catalyst. ► Selectivity of the furfuryl alcohol is increased by the addition of Zr. ► The apparent activation energy is found to be 24.4 kcal/mol. ► Catalyst is recyclable.

Keywords
Furfural; Furfuryl alcohol; Heterogeneous catalyst; Hydrogenation
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Liquid phase chemo-selective catalytic hydrogenation of furfural to furfuryl alcohol
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 454, 15 March 2013, Pages 127–136
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
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