Issue 82, 2015

Hydrogenation in supercritical conditions catalyzed by palladium supported on modified activated carbon

Abstract

Biomass is expected to be a substitute for traditional fossil fuels because it is renewable and environmentally friendly. Bio-oil, as an important utilization of biomass, has a complex composition. Accordingly, it remains a great challenge for oxygenated compounds in bio-oil to be upgraded, especially for furfural. In this research, a highly active catalyst with 1 wt% palladium supported on activated carbon (Pd/AC) was prepared by impregnating Pd species on modified activated carbon, which was applied to furfural catalytic hydrogenation in super critical carbon dioxide (scCO2). The conversion rate (79%) was higher than that obtained in toluene as solvent (60%). A selectivity of furfuralcohol and tetrahydrofurfuryl alcohol of up to 100% was achieved in scCO2 conditions with no byproducts obtained. In contrast, the total selectivity was only 60% using ethanol as solvent. Meanwhile, the reaction conditions in the scCO2 including hydrogen pressure and catalyst amount have been investigated. The Pd/AC catalysts were characterized by XRD, SEM, IR and BET techniques. A green solvent, and high activity and selectivity present real advantages of this method over other methods.

Graphical abstract: Hydrogenation in supercritical conditions catalyzed by palladium supported on modified activated carbon

Article information

Article type
Paper
Submitted
20 Jul 2015
Accepted
29 Jul 2015
First published
30 Jul 2015

RSC Adv., 2015,5, 66704-66710

Hydrogenation in supercritical conditions catalyzed by palladium supported on modified activated carbon

L. Liu, H. Guo, B. Xue, H. Lou and M. Chen, RSC Adv., 2015, 5, 66704 DOI: 10.1039/C5RA14284A

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