부산대학교 도서관

The conversion of concentrated 5-hydroxymethylfurfural (HMF) or fructose to 2,5-furandicarboxylic acid(FDCA), a renewable alternative to petroleum-derived terephthalate acid, is highly desirable butchallenging for FDCA production in an industrial scale. In this contribution, DMSO/H2O mixture wasdemonstrated as an effective medium for the production of FDCA from high concentration of HMF orfructose. For example, FDCA yield up to 93% was achieved at 10 wt% HMF concentration in DMSO/H2Oover commercially available Ru/C (2 equiv. NaHCO3, 130 C, 4 MPa O2 and 12 h). Furthermore, an overallFDCA yield of 65% was achieved from concentrated fructose (19 wt%) through a facile two-step process. Notably, it is so far the highest HMF or fructose concentration employed for FDCA formation. As comparedto pure water or DMSO, DMSO/H2O mixed system is able to stabilize HMF in an alkaline environment,which allows the efficient oxidation of HMF at high concentrations.