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제122회 대한화학회 학술발표회, 총회 및 기기전시회 안내 One-pot oxidative esterification of 5-hydroxymethylfurfural into furan-2,5-dimethylcarboxylate using alloy AuPd-Fe3O4

2018년 8월 30일 16시 24분 33초
ORGN.P-271 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 18일 (목요일) 11:00~12:30
Organic Chemistry
저자 및
Ahra Cho, Sangmoon Byun, Jin Hee Cho, Byeong Moon Kim*
Division of Chemistry, Seoul National University, Korea
Exploring heterogeneous catalysis for transforming sustainable biomass into high value-added intermediates or chemicals is of significant importance. The development of catalysts for the conversion of 5-hydroxymethylfurfural (HMF) into high value-added 2,5-furandicarboxylic acid (FDCA) that can form polyethylene furanoate (PEF) has been established. However, furan-2,5-dimethylcarboxylate (FDMC) has more advantages as a monomer because of its higher solubility than FDCA, which has poor solubility in most solvents. In addition, it is important to be able to show catalytic activity at mild conditions to recycle expensive noble metals in chemical industry. To our best knowledge, a catalyst capable of converting HMF to FDMC at room temperature under 1 atm O2 has not been reported. Herein, we report high-performance bimetallic alloy AuPd-Fe3O4 catalyst, which exhibits high efficiency in the synthesis of furan-2,5-dimethylcarboxylate (FDMC) through one-pot oxidative esterification from 5-hydroxymethylfurfural (HMF) at r.t. under atmospheric pressure of O2. Compared with individual reactions employing either of the monometallic catalysts, the alloy AuPd-Fe3O4 nanoparticles (NPs) exhibited synergy effect, showing unprecedented catalytic activity. Also, 1:1 Au/Pd ratio was found to be the best combination for the highest FDMC yield. Interestingly, monometallic Au-Fe3O4 catalyst showed high yield and selectivity for the synthesis of 5-hydroxymethyl furoic acid methyl ester (HMFE). The magnetically recyclable AuPd-Fe3O4 NPs were readily recycled and reused three times using an external magnet, and the particles showed no significant change in morphology after recycle.