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- W3214476804 abstract "In this work, mixed oxides Al 2 O 3 -TiO 2 -ZrO 2 were evaluated varying their composition (% w/w) for the conversion of monosaccharides (fructose and glucose) to 5-hydroxymethylfural (HMF). Materials were characterized using Thermogravimetric Analysis and Differential Scanning Calorimetry (TGA-DSC), Nitrogen Physisorption (N 2 ), X-ray Diffraction (XRD), RAMAN Spectroscopy, DRS UV-Vis Spectroscopy, Infrared Spectroscopy (FTIR), SEM, TEM, FTIR-Pyridine and Temperature Programmed Desorption of CO 2 (TPD-CO 2 ). The reactions were carried out at 175 °C and 30 bar of Ar pressure in a biphasic system (THF/H 2 O) for 3 h, obtaining a 78% maximum yield of HMF from the glucose and 63% yield from fructose. The materials studied carried out a direct dehydration of the monosaccharides to HMF in 30 min of reaction and were obtained as intermediates to dehydrate levulinic acid (LA) and formic acid (FA), these intermediates were analyzed and eluted using 1 H NMR technique. • Al 2 O 3 -TiO 2 -ZrO 2 ternary catalysts showed Lewis acid sites by pyridine analysis. • For glucose conversion to HMF , ATZ2 generated 48.5% 5-HMF yield after 3 h. • For fructose conversion to HMF, ATZ1 produced 55.21% 5-HMF yield after 3 h. • Catalysts showed a direct dehydration mechanism of the monosaccharides to 5-HMF." @default.
- W3214476804 created "2021-11-22" @default.
- W3214476804 creator A5010452123 @default.
- W3214476804 creator A5017159784 @default.
- W3214476804 creator A5021255106 @default.
- W3214476804 creator A5039185090 @default.
- W3214476804 creator A5041368550 @default.
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- W3214476804 creator A5060913525 @default.
- W3214476804 creator A5063402167 @default.
- W3214476804 creator A5090097959 @default.
- W3214476804 date "2022-06-01" @default.
- W3214476804 modified "2023-10-06" @default.
- W3214476804 title "Production of 5-Hydroxymethylfurfural from glucose using Al2O3-TiO2-ZrO2 ternary catalysts" @default.
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