首页|Transforming liquid flow fuel cells to controllable reactors for highly-efficient oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid at low temperature
Transforming liquid flow fuel cells to controllable reactors for highly-efficient oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid at low temperature
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Highly-efficient oxidation of 5-hydroxymethylfurfural(HMF)to 2,5-furandicarboxylic acid(FDCA)at low temperature with air as the oxidant is still challenging.Herein,inspired by the respiratory electron trans-port chain(ETC)of living cells mediated by electron carriers,we constructed artificial ETCs and trans-formed liquid flow fuel cells(LFFCs)to flexible reactors for efficient oxidation of HMF to produce FDCA under mild conditions.This LFFC reactor employed an electrodeposition modified nickel foam as an anode to promote HMF oxidation and(VO2)2SO4 as a cathode electron carrier to facilitate the electron transfer to air.The reaction rate could be easily controlled by selecting the anode catalyst,adjusting the external loading and changing the cathodic electron carrier or oxidants.A maximal power density of 44.9 mW cm-2 at room temperature was achieved,while for FDCA production,short-circuit condition was preferred to achieve quick transfer of electrons.For a single batch operation with 0.1 M initial HMF,FDCA yield reached 97.1％.By fed-batch operation,FDCA concentration reached 144.5 g L-1 with a total yield of 96％.Ni2+/Ni3+redox couple was the active species mediating the electron transfer,while both experimental and DFT calculation results indicated that HMFCA pathway was the preferred reaction mechanism.
5-Hydroxymethylfurfural2,5-Furandicarboxylic acidElectrodepositionElectron transport chainLiquid flow fuel cell
Ye Qiang、Xi Liu、Denghao Ouyang、Zhao Jiang、Xuebing Zhao
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Key Laboratory of Industrial Biocatalysis,Ministry of Education,Tsinghua University,Beijing 100084,China
Institute of Applied Chemistry,Department of Chemical Engineering,Tsinghua University,Beijing 100084,China
School of Chemical Engineering and Technology,Xi'an Jiaotong University,Xi'an 710049,Shaanxi,China
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