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<p>Aqueous electrolysis offers a potential sustainable route for converting biomass derivatives to plastic monomers, such as 5-hydroxymethylfurfural oxidation to 2,5-furandicarboxylic acid (FDCA). However, selective electrosynthesis of high-concentration FDCA at kilowatt scale and ampere-level current density remains an unmet challenge, hindering commercialization. Here we show an engineered solid polymer electrolyte (SPE) reactor to steer Faradaic and non-Faradaic side reactions, achieving FDCA production at an industrially relevant current density (1.5 A cm<sup>−2</sup>) while maintaining high selectivity (97.0%), Faradaic efficiency (88.2%) and concentration (~1.24 M). The stability of the SPE reactor was demonstrated in continuous operation at 0.5 A cm<sup>−2</sup> over 140 h. Moreover, a 4.3-kW electrochemical platform was constructed with a scale-out strategy, reaching a pilot-scale FDCA production rate (33 kg per day). This work shows the capability of reactor engineering to enable selective and large-scale production of sustainable chemicals via electrochemical processes.</p><p></p>

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Selective electrooxidation of 5-hydroxymethylfurfural at pilot scale by engineering a solid polymer electrolyte reactor

  • 期刊论文

  • 发表日期：

    2025年7月17日

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  • Yue Ren,
  • Wei Kong,
  • Yang Li,
  • Wang Zhan,
  • Chunyu Zhang,
  • Yuhang Miao,
  • Bingxin Yao,
  • Shengnan Li,
  • Zhenhua Li,
  • Xiang Liu,
  • Sheng Zhan,
  • Hua Zhou,
  • Mingfei Shao,
  • Haohong Duan

摘要

Aqueous electrolysis offers a potential sustainable route for converting biomass derivatives to plastic monomers, such as 5-hydroxymethylfurfural oxidation to 2,5-furandicarboxylic acid (FDCA). However, selective electrosynthesis of high-concentration FDCA at kilowatt scale and ampere-level current density remains an unmet challenge, hindering commercialization. Here we show an engineered solid polymer electrolyte (SPE) reactor to steer Faradaic and non-Faradaic side reactions, achieving FDCA production at an industrially relevant current density (1.5 A cm−2) while maintaining high selectivity (97.0%), Faradaic efficiency (88.2%) and concentration (~1.24 M). The stability of the SPE reactor was demonstrated in continuous operation at 0.5 A cm−2 over 140 h. Moreover, a 4.3-kW electrochemical platform was constructed with a scale-out strategy, reaching a pilot-scale FDCA production rate (33 kg per day). This work shows the capability of reactor engineering to enable selective and large-scale production of sustainable chemicals via electrochemical processes.