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A series of tungstophosphoric acid (TPA) catalysts supported on tantalum oxide (Ta2O5) were prepared and characterized by FT-infrared, X-ray diffraction, Laser Raman and temperature programmed desorption of ammonia. Characterization results suggest the presence of intact TPA on Ta2O5. The catalyst acidity varied with changes in TPA content and treatment temperature. The catalyst with 20 wt% TPA on...
A series of Al exchanged heteropoly tungstate (AlTPA) supported on SnO2 catalysts were prepared and characterized by FT-Infrared, X-ray diffraction and temperature programmed desorption of ammonia. The catalysts were evaluated for dehydration of fructose to 5-hydroxymethylfurfural (5-HMF). The catalysts showed high activity for dehydration of fructose and the catalyst with 20 % AlTPA on SnO2 exhibited...
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