Abstract
Highly selective production of 5-ethoxymethylfurfural (EMF) from transformation of glucose in ultrasound-assisted biphasic system over metal (Al, Zn or Ni)-doped sulfonated carbon (SC) catalyst was studied in details. It was found that EMF selectivities of 12.8, 84.4, 85.1 and 32.8% could be obtained from SC, Al-SC, Zn-SC and Ni-SC, respectively. The effect of ultrasonic application indicated that EMF was easily produced via isomerization, dehydration and etherification. Moreover, low leaching amount of metal species was found for Zn-SC, resulting in better recyclability when compared with Al-SC. This research provided a novel way for EMF production with high selectivity at short reaction.
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