Sulfonic acid-functionalized heterogeneous catalysts have been evaluated in the catalytic dehydration of C(,monosaccharides into 5-hydroxymethylfurfural(HMF) using dimethyl sulfoxide(DMSO)as solvent.Sulfonic commercia...Sulfonic acid-functionalized heterogeneous catalysts have been evaluated in the catalytic dehydration of C(,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.展开更多
Biomass has been widely accepted as a ＂zero-emission＂ energy carrier to take place fossil fuels, while its catalytic conversion is still limited by low efficiency of carbon atoms. Biomass conversion via 5- hydroxyme...Biomass has been widely accepted as a ＂zero-emission＂ energy carrier to take place fossil fuels, while its catalytic conversion is still limited by low efficiency of carbon atoms. Biomass conversion via 5- hydroxymethylfurfural （HMF） as a platform chemical is highly attractive because almost all carbon atoms could he retained in the downstream chemicals under mild reaction conditions. Here we summarize recent fundamental researches and industrial progresses on all involved processes including biomass degradation to hexoses, HMF formation, hydrogenation and oxidation of HMF.展开更多
基金Financial support from the Spanish Ministry of Economy and Competitiveness through the project CTQ2011-28216-C02-01Spanish Ministry of Economy and Competitiveness for an FPI grant
文摘Sulfonic acid-functionalized heterogeneous catalysts have been evaluated in the catalytic dehydration of C(,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.
基金supported by the National Natural Science Foundation of China (20576025, 21133010, 21473223)Ningbo Agricultural Key Science and Technology Program (2013C11035)the Laboratory of Science and Technology on Surface Physics and Chemistry (ZDXKFZ201304, ZDXKFZ201306)
文摘Biomass has been widely accepted as a ＂zero-emission＂ energy carrier to take place fossil fuels, while its catalytic conversion is still limited by low efficiency of carbon atoms. Biomass conversion via 5- hydroxymethylfurfural （HMF） as a platform chemical is highly attractive because almost all carbon atoms could he retained in the downstream chemicals under mild reaction conditions. Here we summarize recent fundamental researches and industrial progresses on all involved processes including biomass degradation to hexoses, HMF formation, hydrogenation and oxidation of HMF.
