Synergistic effect of the fourth metal component on Co/Mn/Br catalyst in 2, 5-furanediformic acid preparation

2,5-furandicarboxylic acid(FDCA) has the potential to replace terephthalic acid in the synthesis of bio-based resins. The catalytic activity of Co/Mn/Br catalyst and the effect of the fourth metal component for FDCA preparation were investigated. The highest yield of FDCA achieved 76.3% with Co/Mn/Br catalyst. Cu(OAc)2·H2O could greatly reduce the dosage of catalyst without sacrificing the activity, and the highest yield of FDCA with Co/Mn/Br/Cu catalyst was 77.2%. And the reaction processes with Co/Mn/Br catalyst and Co/Mn/Br/Cu catalyst were explored.