Comprehensive investigation of the biomass derived furfuryl alcohol oligomer formation over tungsten oxide catalysts
作者:Xiaojun Chan、Wei Nan、Devinder Mahajan、Taejin Kim
DOI:10.1016/j.catcom.2015.08.027
日期:2015.12
The feasibility of using tungsten oxide catalysts for furfuryl alcohol (FA) oligomerization reaction was investigated in the liquid phase at 100 degrees C and ambient pressure. Five dimers (2,2'-difurylmethane, 2-(2-fulylmethyl)-5-methylfuran, difurfuryl ether, 4-furfuryl-2-pentenoic acid gamma-lactone, 5-fufuryl-furfuryl alcohol) and two timers (2,5-difurfurylfuran and 2,2'-(furylmethylene)bis(5-methylfuran)) were observed in GC and GC/MS, while Infrared (IR) and Raman spectroscopy provided the co-existence of conjugated diene and diketone molecular structures, respectively. It was observed that C-9-C-15 oligomers' selectivity decreased as the reaction time increased. Ether bridge and terminal alcohol are dominant FA dimers which are very similar to sulfuric acid (homogeneous catalysis) catalyzed dehydration/condensation reaction of FA. (C) 2015 Elsevier B.V. All rights reserved.