Microwave-assisted coating of carbon nanostructures with titanium dioxide for the catalytic dehydration of D-xylose into furfural
authors Russo, PA; Lima, S; Rebuttini, V; Pillinger, M; Willinger, MG; Pinna, N; Valente, AA
nationality International
journal RSC ADVANCES
keywords SOLID ACID CATALYSTS; LIQUID-PHASE DEHYDRATION; NONAQUEOUS SYNTHESIS; SELECTIVE PREPARATION; AQUEOUS-SOLUTIONS; GRAPHENE OXIDE; TIN OXIDE; CONVERSION; TIO2; NANOPARTICLES
abstract Titanium dioxide was selectively grown on reduced graphene oxide (TiO2/RGO) and carbon black (TiO2/CB) by a microwave-assisted synthesis in benzyl alcohol to produce nanocomposite catalysts (consisting of 8-9 nm anatase nanoparticles dispersed on the carbon surface) with interesting properties for the production of furfural from renewable carbohydrate biomass. The materials efficiently catalyze the aqueous-phase dehydration of xylose into furfural at 170 degrees C with high furfural yields (67-69%) at high conversions (95-97%). The catalytic performance was not significantly affected by the type of carbon support, suggesting that cheap amorphous carbons can be used to support the titania nanoparticles. Additionally, the catalysts were found to be stable under hydrothermal conditions and outstandingly stable towards coke formation in comparison to other solid acid catalysts reported in the literature. Both composites were reused after a simple wash and drying procedure without any detectable loss of catalytic activity in consecutive batch runs.
publisher ROYAL SOC CHEMISTRY
issn 2046-2069
year published 2013
volume 3
issue 8
beginning page 2595
ending page 2603
digital object identifier (doi) 10.1039/c2ra22874b
web of science category Chemistry, Multidisciplinary
subject category Chemistry
unique article identifier WOS:000314426200014
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