Production of 5-hydroxymethylfurfural in ionic liquids under high fructose concentration conditions |
| |
Authors: | Changzhi Li Aiqin Wang Tao Zhang |
| |
Institution: | a Dalian Institute of Chemical Physics, CAS, 457 Zhongshan Road, Dalian 116023, PR China b Dalian National Laboratory for Clean Energy, Dalian 116023, PR China |
| |
Abstract: | Acid-promoted, selective production of 5-hydroxymethylfurfural (HMF) under high fructose concentration conditions was achieved in ionic liquids (ILs) at 80 °C. A HMF yield up to 97% was obtained in 8 min using 1-butyl-3-methylimidazolium chloride (C4mim]Cl) catalyzed with 9 mol % hydrochloric acid. More significantly, an HMF yield of 51% was observed when fructose was loaded at a high concentration of 67 wt % in C4mim]Cl. Water content below 15.4% in the system had little effect on HMF yield, whereas a higher water content was detrimental to both reaction rate and HMF yield. In situ NMR analysis suggested that the transformation of fructose to HMF was a highly selective reaction that proceeded through the cyclic fructofuranosyl intermediate pathway. This work increased our capacity to produce HMF, and should be valuable to facilitate cost-efficient conversion of biomass into biofuels and bio-based products. |
| |
Keywords: | 5-Hydroxymethylfurfural Ionic liquid Fructose Dehydration Bio-based product |
本文献已被 ScienceDirect 等数据库收录! |
|