کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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60110 | 1419443 | 2014 | 12 صفحه PDF | دانلود رایگان |
Sulfonic acid-functionalized heterogeneous catalysts have been evaluated in the catalytic dehydration of C6 monosaccharides into 5-hydroxymethylfurfural (HMF) using dimethyl sulfoxide (DMSO) as solvent. Sulfonic commercial resin Amberlyst-70 was the most active catalyst, which was ascribed to its higher concentration of sulfonic acid sites as compared with the other catalysts, and it gave 93 mol% yield of HMF from fructose in 1 h. With glucose as the starting material, which is a much more difficult reaction, the reaction conditions (time, temperature, and catalyst loading) were optimized for Amberlyst-70 by a response surface methodology, which gave a maximum HMF yield of 33 mol% at 147 °C with 23 wt% catalyst loading based on glucose and 24 h reaction time. DMSO promotes the dehydration of glucose into anhydroglucose, which acts as a reservoir of the substrate to facilitate the production of HMF by reducing side reactions. Catalyst reuse without a regeneration treatment showed a gradual but not very significant decay in catalytic activity.
Graphical AbstractSulfonic acid-functionalized Amberlyst-70 was used in dimethyl sulfoxide (DMSO) as solvent for the catalytic dehydration of C6 monosaccharides into 5-hydroxymethylfurfural (HMF), a biomass-derived platform molecule.Figure optionsDownload as PowerPoint slide
Journal: Chinese Journal of Catalysis - Volume 35, Issue 5, May 2014, Pages 644–655