Synergistic Effects of Co–Fe Boosts the Transformation of CO 2 into C 6+ Dicarboxylic Acids up to Gram-Scale under Mild Conditions

作者：Ying Zhang, Junjun Mao, Bo Zhang, Dan Wang, Chenchen Zhang, Yang Lou, Chengsi Pan, Yongfa Zhu · 发表于：ACS Catalysis · 年份：2024 · DOI：10.1021/acscatal.3c05395 · 被引用次数：24 · 研究领域：Carbon dioxide utilization in catalysis、CO2 Reduction Techniques and Catalysts、Ionic liquids properties and applications

Electrochemical carboxylation of 1,3-dienes with carbon dioxide (CO 2 ) is a feasible method to obtain dicarboxylic derivatives, which are important synthetic intermediates of polymers and pharmaceuticals. However, due to unavoidable byproducts and unfriendly conditions, the formation of pure dicarboxylic acids has been limited. In this work, we report that a bimetallic phosphating CoFeP catalyst on nickel foam (CoFeP/NF) served as a remarkable electrode, which transforms CO 2 into multicarbon (C 6+ ) dicarboxylic acids. The synergistic effects of CoFeP catalyst between Co and Fe allow activation of 1,3-dienes mainly, in which electron transfer easier to the 1,3-dienes proceeded to afford radical anion of the diene, pursuant carboxylation with CO 2 and further electron transfer formed the ultimate carboxylated products. The reaction can occur in a commercial flow cell with gram-scale amplification. The dicarboxylic acid obtained was up to 1.08 g at a 5 mmol scale of 1,3-dienes, illustrating high electrocatalytic activity and practical application of CoFeP/NF.