Carbon monoxide electroreduction as an emerging platform for carbon utilization
Carbon monoxide electroreduction as an emerging platform for carbon utilization
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DOI：
10.1038/s41929-019-0388-2
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发表时间：
2019-12-01
期刊：
影响因子：
37.8
通讯作者：
Jiao, Feng
中科院分区：
文献类型：
--
作者：
Jouny, Matthew;Hutchings, Gregory S.;Jiao, Feng
二氧化碳电化学转化为高附加值的化学产品已被大量探索，作为碳利用的一种有前途的策略。然而，多碳（C2+）产物的直接合成遭受不期望的副反应和相对低的选择性。电化学将二氧化碳转化为单碳产品要有效得多，并且正在商业化部署。最近的研究表明，CO可以在高反应速率、高C2+选择性和固有改善的电解质稳定性下进一步电化学转化为C2+，提高了两步途径转化CO2的前景。在这个角度来看，朝着高速率CO转化的进展与可以进一步提高性能的机械见解和设备设计一起显示。两步转化工艺的技术经济分析和摇篮到门的生命周期评估表明，与现有技术相比，产生乙酸和乙烯的大容量商业工艺具有经济可行性和改善的环境影响。
The electrochemical conversion of carbon dioxide to value-added chemical products has been heavily explored as a promising strategy for carbon utilization. However, the direct synthesis of multi-carbon (C2+) products suffers from undesired side reactions and relatively low selectivity. Electrochemically converting CO2 to single-carbon products is much more effective and being commercially deployed. Recent studies have shown that CO can be electrochemically transformed further to C2+ at high reaction rates, high C2+ selectivity and inherently improved electrolyte stability, raising the prospect of a two-step pathway to transform CO2. In this Perspective, the progress towards high-rate CO conversion is shown alongside mechanistic insights and device designs that can improve performance even further. A techno-economic analysis of the two-step conversion process and cradle-to-gate lifecycle assessment shows the economic feasibility and improved environmental impact of a high-volume commercial process generating acetic acid and ethylene compared to the current state of the art.