Fig. 2: Electrochemical and nonelectrochemical reaction mechanisms. | Nature Communications

Fig. 2: Electrochemical and nonelectrochemical reaction mechanisms.

From: Integrated electrochemical and chemical system for ampere-level production of terephthalic acid alternatives and hydrogen

Fig. 2

a HPLC chromatograms for the electrochemical reaction of HMF obtained at a constant potential of 1.50 V vs. RHE over A-Co-Ni2P catalyst in 1 M KOH containing 0.1 M HMF. b HPLC chromatograms for the nonelectrochemical reaction of DFF obtained without applying potential over A-Co-Ni2P catalyst. c ATR-FTIR spectra of 0.1 M DFF and 0.1 M HMFCA without applying potential as a function of time and reference spectra of HMF, DFF, HMFCA, FFCA and FDCA. d Comparison of DFF and HMFCA in nonelectrochemical reactions under alkaline conditions. e In situ electrochemical ATR-FTIR spectra of the electrolyte (1 M KOH + 0.1 M HMF) over A-Co-Ni2P catalyst recorded within 120 s at 1.50 V vs. RHE. f Corresponding Pseudo-color mapping image. g Two possible electrooxidation pathways for the synthesis of FDCA from HMF. a. u. arbitrary units.

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