Scholarlink

<p>The electrochemical carbon monoxide reduction (COR) reaction offers a carbon- and energy-efficient pathway to ethylene. However, present systems typically rely on pure CO, making the process costly and difficult to scale. An economically feasible alternative is to use syngas—the predominant industrial CO source—produced globally at quantities approximately 250 times higher than pure CO, but containing hydrogen and other components. Therefore, for a syngas-based COR system, achieving high single-pass conversion efficiency (SPCE) is essential, as high gas flow rates introduce excess hydrogen, complicating and increasing the cost of downstream product separation. Nevertheless, optimizing SPCE leads to hydrogen dilution and insufficient CO transport to the copper cathode, which in turn decreases ethylene Faradaic efficiency (FE). To overcome this trade-off, guided by Raman spectroscopy and density functional theory, here we develop a COOH-functionalized active carbon material which captures CO from syngas, strengthens CO adsorption on the copper cathode and thereby enhances ethylene FE even under CO-diluted conditions. This design enables an ethylene FE of 72% alongside a CO SPCE of 73% in a simulated syngas containing an H<sub>2</sub>/CO ratio of 2/1—outperforming reported systems operated with pure CO feed and offering a more scalable, resource-efficient route to sustainable ethylene.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Electrosynthesis of ethylene from syngas

  • 期刊论文

  • 发表日期：

    2026年2月10日

查看全文
  • Feng Li,
  • Zunmin Guo,
  • Yu Yan,
  • Qiyou Wang,
  • Yongxiang Liang,
  • Lian Duan,
  • Loann Bonnenfant,
  • Zahra Azimi Dijvejin,
  • Min Liu,
  • Yurou Celine Xiao,
  • Ziyu Zhao,
  • Jieyuan Liu,
  • Andrija Stepanovic,
  • Yuxuan Gao,
  • Qian Sun,
  • Hafiz Ghulam Abbas,
  • Mengyang Fan,
  • Jianan Erick Huang,
  • Sungjin Park,
  • Stuart M. Holmes,
  • Yong Zhao,
  • Yi Xu,
  • Cao-Thang Dinh,
  • Ziyun Wang,
  • Rui Kai Miao,
  • David Sinton

摘要

The electrochemical carbon monoxide reduction (COR) reaction offers a carbon- and energy-efficient pathway to ethylene. However, present systems typically rely on pure CO, making the process costly and difficult to scale. An economically feasible alternative is to use syngas—the predominant industrial CO source—produced globally at quantities approximately 250 times higher than pure CO, but containing hydrogen and other components. Therefore, for a syngas-based COR system, achieving high single-pass conversion efficiency (SPCE) is essential, as high gas flow rates introduce excess hydrogen, complicating and increasing the cost of downstream product separation. Nevertheless, optimizing SPCE leads to hydrogen dilution and insufficient CO transport to the copper cathode, which in turn decreases ethylene Faradaic efficiency (FE). To overcome this trade-off, guided by Raman spectroscopy and density functional theory, here we develop a COOH-functionalized active carbon material which captures CO from syngas, strengthens CO adsorption on the copper cathode and thereby enhances ethylene FE even under CO-diluted conditions. This design enables an ethylene FE of 72% alongside a CO SPCE of 73% in a simulated syngas containing an H2/CO ratio of 2/1—outperforming reported systems operated with pure CO feed and offering a more scalable, resource-efficient route to sustainable ethylene.