Scholarlink

<p><i>N</i>-propanol is an important industrial solvent but the current industrial routes for its production rely on fossil fuels and generate high carbon dioxide emissions. Replacing fossil processes with electrochemical systems powered using renewable energy offers one route to reduce the carbon intensity of <i>n</i>-propanol manufacture. The electrosynthesis of <i>n</i>-propanol via carbon monoxide electroreduction relies on the coupling of C<sub>1</sub> and C<sub>2</sub> intermediates, and these are preferentially stabilized on different sites. Here we pursued the synthesis of catalysts in which a high-oxygen-affinity metal (such as Sn in the best catalysts herein) is present in dilute quantities within a Cu matrix. The Sn–Cu catalyst is then formed into a catalyst/carbon/ionomer heterojunction architecture that reverses electro-osmotic drag to concentrate the <i>n</i>-propanol produced. We achieve <i>n</i>-propanol electrosynthesis from carbon monoxide with a Faradaic efficiency of 47 ± 3% and a concentration of 30 wt% at an energy efficiency of 24%. We report stable <i>n</i>-propanol electrosynthesis for 120 h in a membrane-electrode assembly electrolyser.</p><p></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

Electrified synthesis of n-propanol using a dilute alloy catalyst

  • 期刊论文

  • 发表日期：

    2025年2月28日

查看全文
  • Yuanjun Chen,
  • Xinyue Wang,
  • Xiao-Yan Li,
  • Rui Kai Miao,
  • Juncai Dong,
  • Zilin Zhao,
  • Chuhao Liu,
  • Jianan Erick Huang,
  • Jinhong Wu,
  • Senlin Chu,
  • Weiyan Ni,
  • Zunmin Guo,
  • Yi Xu,
  • Pengfei Ou,
  • Bingjun Xu,
  • Yang Hou,
  • David Sinton,
  • Edward H. Sargent

摘要

N-propanol is an important industrial solvent but the current industrial routes for its production rely on fossil fuels and generate high carbon dioxide emissions. Replacing fossil processes with electrochemical systems powered using renewable energy offers one route to reduce the carbon intensity of n-propanol manufacture. The electrosynthesis of n-propanol via carbon monoxide electroreduction relies on the coupling of C1 and C2 intermediates, and these are preferentially stabilized on different sites. Here we pursued the synthesis of catalysts in which a high-oxygen-affinity metal (such as Sn in the best catalysts herein) is present in dilute quantities within a Cu matrix. The Sn–Cu catalyst is then formed into a catalyst/carbon/ionomer heterojunction architecture that reverses electro-osmotic drag to concentrate the n-propanol produced. We achieve n-propanol electrosynthesis from carbon monoxide with a Faradaic efficiency of 47 ± 3% and a concentration of 30 wt% at an energy efficiency of 24%. We report stable n-propanol electrosynthesis for 120 h in a membrane-electrode assembly electrolyser.