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From the Cover: Ultraefficient homogeneous catalyst for the CO2-to-CO electrochemical conversion

机译:从封面开始:用于CO2到CO电化学转化的超高效均相催化剂

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摘要

A very efficient electrogenerated Fe0 porphyrin catalyst was obtained by substituting in tetraphenylporphyrin two of the opposite phenyl rings by ortho-, ortho'-phenol groups while the other two are perfluorinated. It proves to be an excellent catalyst of the CO2-to-CO conversion as to selectivity (the CO faradaic yield is nearly quantitative), overpotential, and turnover frequency. Benchmarking with other catalysts, through catalytic Tafel plots, shows that it is the most efficient, to the best of our knowledge, homogeneous molecular catalyst of the CO2-to-CO conversion at present. Comparison with another Fe0 tetraphenylporphyrin bearing eight ortho-, ortho'-phenol functionalities launches a general strategy where changes in substituents will be designed so as to optimize the operational combination of all catalyst elements of merit.
机译:通过在四苯基卟啉中将两个相对的苯环上的邻,邻'-苯酚基团取代,同时将另外两个全氟化,可以得到非常高效的电生成的Fe 0 卟啉催化剂。在选择性(CO法拉第产量几乎是定量的),超电势和周转频率方面,它被证明是出色的CO2-CO转化催化剂。通过催化塔菲尔图对其他催化剂进行的基准测试表明,就我们所知,它是目前最有效的CO2-CO转化均质分子催化剂。与具有八种邻,邻'-苯酚官能度的另一种Fe 0 四苯基卟啉的比较,提出了一种通用的策略,即设计取代基的变化以优化所有优点催化剂的操作组合。

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