磺酸多相催化剂用于二甲基亚砜中C_6-单糖脱水制5-羟甲基糠醛(英)  

Sulfonic acid heterogeneous catalysts for dehydration of C_6-monosaccharides to 5-hydroxymethylfurfural in dimethyl sulfoxide

作　　者：Gabriel Morales Juan A.Melero Marta Paniagua Jose Iglesias Blanca Hernandez Maria Sanz 

机构地区：[1] Department of Chemical and Environmental Technology, Universidad Rey Juan Carlos. C/Tulipan s/n. Mostoles. E28933,Madrid, Spain [2] Department of Chemical and Energy Technology, Universidad Rey Juan Carlos. C/Tulipan s/n. Mostoles. E28933 Madrid, Spain

出　　处：《催化学报》2014年第5期644-655,共12页

基　　金：Financial support from the Spanish Ministry of Economy and Competitiveness through the project CTQ2011-28216-C02-01;Spanish Ministry of Economy and Competitiveness for an FPI grant

摘　　要：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.Sulfonic acid-functionalized heterogeneous catalysts have been evaluated in the catalytic dehydra-tion 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 as-cribed 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.

关 键 词：非均相催化剂 羟甲基糠醛 二甲基亚砜 磺酸 脱水 单糖 响应面分析法 DMSO 

分 类 号：TQ251.11[化学工程—有机化工]