authors |
Skrodczky, K; Antunes, MM; Han, XY; Santangelo, S; Scholz, G; Valente, AA; Pinna, N; Russo, PA |
nationality |
International |
journal |
COMMUNICATIONS CHEMISTRY |
keywords |
USEFUL BIO-PRODUCTS; REDUCTIVE ETHERIFICATION; BRONSTED ACIDITY; ETHYL LEVULINATE; HYDROXYL-GROUPS; OXIDE; CONVERSION; RAMAN; NANOSHEETS; LEWIS |
abstract |
Niobium pentoxides are promising acid catalysts for the conversion of biomass into fuels and chemicals. Developing new synthesis routes is essential for designing niobium pentoxide catalysts with improved activity for specific practical processes. Here we show a synthesis approach in acetophenone, which produces nanostructured niobium pentoxides with varying structure and acidity that act as efficient acid catalysts. The oxides have orthorhombic structures with different extents of distortions and coordinatively unsaturated metal atoms. A strong dependence is observed between the type and strength of the acid sites and specific structural motifs. Ultrasmall niobium pentoxide nanoparticles, which have strong Bronsted acidity, as well as Lewis acidity, give product yields of 96% (3 h, 140 degrees C, 100% conversion), 85% (3 h, 140 degrees C, 86% conversion), and 100% (3 h, 110 degrees C, 100% conversion) in the reactions of furfuryl alcohol, 5-(hydroxymethyl)furfural, and a-angelica lactone with ethanol, respectively. |
publisher |
NATURE PUBLISHING GROUP |
issn |
2399-3669 |
year published |
2019 |
volume |
2 |
digital object identifier (doi) |
10.1038/s42004-019-0231-3 |
web of science category |
Chemistry, Multidisciplinary |
subject category |
Chemistry |
unique article identifier |
WOS:000496178400002
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ciceco authors
impact metrics
journal analysis (jcr 2019):
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journal impact factor |
4.253 |
5 year journal impact factor |
4.253 |
category normalized journal impact factor percentile |
71.469 |
dimensions (citation analysis):
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altmetrics (social interaction):
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