级联电催化和热催化降低CO2到propionaldehyde的过程
Jie Zhang1,2, Xingsi Kang3, Yuchen Yan1,2
1Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou, 215123, China.
Angewandte Chemie (International ed. in English)
|January 17, 2024
概括
这项研究介绍了一种混合工艺,将电催化和热催化相结合,将二氧化碳 (CO2) 转化为甲. 这种新的方法显著提高了减少二氧化碳产生的C3+产品的选择性.
科学领域:
- 催化剂是一种催化剂.
- 电化学 电化学 电化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 电化学二氧化碳减排对C3+产品的选择性有限.
- 混合工艺将电催化与其他途径相结合,提供了一个潜在的解决方案.
研究的目的:
- 开发一种级联电催化和热催化工艺,用于将二氧化碳减少为甲.
- 优化混合系统,以提高C3氧化物的选择性和产量.
主要方法:
- 在膜电极组合 (MEA) 反应器中使用Cu(OH) 2纳米线将CO2和水电降解为C2H4,CO和H2.
- 使用-素复合体的产品的热化学化,确定1,4-bis(diphenylphosphino) 丁二素联体为最佳.
主要成果:
- 基于降低的CO2的基础上,实现了约38%的甲选择性和44%的C3氧化物总选择性.
- 与单独的电化学系统相比,优化的混合系统显示了七倍以上的改进.
- 在温和条件下鉴定出一种 - 素复合物,甲的循环数为1148.
结论:
- 开发的级联电催化和热催化过程有效地将二氧化碳转化为高选择性的甲.
- 这种混合方法代表了二氧化碳利用在生产附加值化学品方面取得的重大进展.
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