Stirring-Free Scalable Electrosynthesis Enabled by Alternating Current.
Stirring-Free Scalable Electrosynthesis Enabled by Alternating Current.
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由交流电实现的无搅拌可扩展电合成。
DOI：
10.1002/chem.202203825
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
S. Semenov
中科院分区：
文献类型：
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作者：
E. O. Bortnikov;Barbara S. Smith;D. Volochnyuk;S. Semenov
交流电（AC）电解作为一种温和和选择性电化学转化的通用工具正受到越来越多的关注。在这项工作中，我们证明了交流电可以实现无搅拌电化学反应器的概念，其中交流电固有的电极极性的周期性开关在反应器的整个体积上提供均匀的电解。这样的设计意味着一种扩大电合成规模的直接方法。在三种不同的rvc填充反应器中，在高达50 mmol的规模上进行了电化学转化，证明了这一点。使用建议的设计成功地实现了氧化还原中性，氧化和还原过程，并进一步研究了不同类型反应的适用频率范围。交流设计的优点，如无需搅拌和最大的电极表面积，为其在小规模筛选实验和大规模制备性电合成中普遍应用提供了可能性，而无需在两者之间进行重大优化。
Alternating current (AC) electrolysis is receiving increased interest as a versatile tool for mild and selective electrochemical transformations. In this work, we demonstrate that AC can enable the concept of a stirring-free electrochemical reactor where the periodic switch of electrode polarity, inherent to AC, provides uniform electrolysis across the whole volume of the reactor. Such design implies a straightforward approach for scaling up electrosynthesis. This was demonstrated on the range of electrochemical transformations performed in three different RVC-packed reactors on up to a 50-mmol scale. Redox-neutral, oxidative, and reductive processes were successfully implemented using the suggested design and the applicable frequency ranges were further investigated for different types of reactions. The advantages of the AC-enabled design - such as the absence of stirring and a maximized surface area of the electrodes - provide the possibility for its universal application both for small-scale screening experimentation and large-scale preparative electrosynthesis without significant optimization needed in between.