Journal
CHEMICAL ENGINEERING JOURNAL
Volume 283, Issue -, Pages 1315-1321Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2015.08.022
Keywords
5-Hydroxymethylfurfural; 2,5-Diformylfuran; Molecular oxygen; Oxidation; Heterogeneous catalysts
Categories
Funding
- National Natural Science Foundation of China [21272065]
- Scientific Research Fund of Hunan Provincial Education Department [13C562, 15C0816]
- Outstanding Youth Project of Hunan Provincial Education Department [15B134]
- China Scholarship Council [201506720018]
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Amino modified SBA-15 (SBA-NH2) was used to immobilize vanadyl (VO2+) and cupric (Cu2+) ions, giving SBA-NH2-VO2+ and SBA-NH2-Cu2+ catalysts, respectively, and the as-prepared catalysts were characterized by XRD, XPS, TEM and Nitrogen adsorption-desorption technologies. The catalytic performance of the SBA-NH2-VO2+ catalysts for the oxidation of HMF can be enhanced by the use of SBA-NH2-Cu2+ as the co-catalyst. Several important reaction parameters were investigated, and it was found that the reaction solvent showed a great effect on the oxidation of HMF. The highest HMF conversion and product selectivity were obtained in aromatic solvents. The highest HMF conversion reached 98.8% at 110 degrees C in 4-chlorotoluene, affording DFF and 2,5-furandicarboxylic acid (FDCA) with yields of 28.9% and 62.7%, respectively. More importantly, the catalysts could be recycled and showed no significant decrease of their catalytic activities. (C) 2015 Elsevier B.V. All rights reserved.
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