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Catalysts 2015, 5(4), 1636-1648; doi:10.3390/catal5041636

Facile and Low-Cost Preparation of Nb/Al Oxide Catalyst with High Performance for the Conversion of Kiwifruit Waste Residue to Levulinic Acid

Guizhou Engineering Research Center for Fruit Processing, Food and Pharmaceutical Engineering Institute, Guiyang University, Guiyang 550003, China
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Academic Editor: Rafael Luque
Received: 17 July 2015 / Revised: 1 September 2015 / Accepted: 11 September 2015 / Published: 25 September 2015
(This article belongs to the Special Issue Catalytic Conversion of Biomass)
View Full-Text   |   Download PDF [468 KB, uploaded 25 September 2015]   |  

Abstract

The kiwifruit industry is booming worldwide. As a result, a great deal of kiwifruit waste residue (KWR) containing monosaccharides is produced and discarded. This material shows great potential for the production of platform chemicals. In this study, a series of Nb/Al oxide catalysts were synthesized via a facile and low-cost coprecipitation method, and their structures were characterized using: thermal gravimetric analysis (TGA), XRD, FESEM, TEM, X-ray photoelectron spectroscopy (XPS), NH3-TPD, N2 adsorption-desorption, and FTIR-Pyridine adsorption. Experimental results of sugar-to-levulinic acid (LA) conversion revealed that the 20%Nb/Al oxide catalyst provided the highest catalytic performance and durability in terms of LA yield from fructose (74.2%) at 463 K after 10 min and from glucose (47.5%) at 473 K after 15 min. Notably, the 20% Nb/Al oxide catalyst with a 10% dosage is capable of converting kiwifruit waste residue to LA at 473 K after 10 min. In conclusion, the enhanced catalytic performance was obtained due to the high acidity, and large surface areaof Nb/Al oxide catalyst. View Full-Text
Keywords: levulinic acid; kiwifruit waste residue (KWR); heterogeneous catalysis; Nb/Al oxide catalyst levulinic acid; kiwifruit waste residue (KWR); heterogeneous catalysis; Nb/Al oxide catalyst
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Wang, R.; Xie, X.; Liu, Y.; Liu, Z.; Xie, G.; Ji, N.; Ma, L.; Tang, M. Facile and Low-Cost Preparation of Nb/Al Oxide Catalyst with High Performance for the Conversion of Kiwifruit Waste Residue to Levulinic Acid. Catalysts 2015, 5, 1636-1648.

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