Scholarlink

<p>A new strategy has been proposed for phosgene (COCl<sub>2</sub>) production from CO<sub>2</sub> and waste HCl. In an H-type electrolysis cell, CO<sub>2</sub> is reduced to CO in the catholyte, while HCl is oxidized to Cl₂ in the anolyte. The generated CO and Cl<sub>2</sub> can be used as feedstock for phosgene synthesis. While CO<sub>2</sub>RR in aqueous electrolytes has been extensively studied, it remains limited to the laboratory scale due to issues such as cathode deactivation. In this work, we introduce an organic electrolyte system using tetrabutylammonium perchlorate (Bu<sub>4</sub>NClO<sub>4</sub>) in propylene carbonate (PC), which exhibits improved stability and high CO selectivity. Notably, making a direct comparison of catalyst stability between aqueous and organic systems is inherently challenging due to their distinct electrochemical environments. In this work, we have extensively discussed this issue. Therefore, the direct comparison of catalyst stability between these two electrolyte systems represents a key novelty of this study. This approach not only enables efficient and stable CO production but also provides a sustainable route for CO<sub>2</sub> utilization and waste HCl treatment.</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

A strategy to phosgene production from CO2 and HCl: why using an organic electrolyte as electrochemical medium for CO2 Electro-reduction

  • 期刊论文

  • 发表日期：

    2025年11月10日

查看全文
  • Fengxia Shen,
  • Shuai Wu,
  • Mario Kurniawan,
  • Vishal Raheja,
  • Elieser Höß,
  • Tianyou Chen,
  • Jin Shi,
  • Ting Jin,
  • Andreas Bund,
  • Thomas Hannappel,
  • David Ostheimer,
  • Jianxiong Liu,
  • Shipeng Miao

摘要

A new strategy has been proposed for phosgene (COCl2) production from CO2 and waste HCl. In an H-type electrolysis cell, CO2 is reduced to CO in the catholyte, while HCl is oxidized to Cl₂ in the anolyte. The generated CO and Cl2 can be used as feedstock for phosgene synthesis. While CO2RR in aqueous electrolytes has been extensively studied, it remains limited to the laboratory scale due to issues such as cathode deactivation. In this work, we introduce an organic electrolyte system using tetrabutylammonium perchlorate (Bu4NClO4) in propylene carbonate (PC), which exhibits improved stability and high CO selectivity. Notably, making a direct comparison of catalyst stability between aqueous and organic systems is inherently challenging due to their distinct electrochemical environments. In this work, we have extensively discussed this issue. Therefore, the direct comparison of catalyst stability between these two electrolyte systems represents a key novelty of this study. This approach not only enables efficient and stable CO production but also provides a sustainable route for CO2 utilization and waste HCl treatment.