This article explores technical challenges and potential methodologies for understanding electrochemical Reactive CO${}_2$ Capture (RCC) mechanisms. RCC offers potential energy cost advantages by directly converting captured CO${}_2$ into fuels and chemicals, unlike traditional carbon capture and utilization (CCU) processes that require sequential capture, concentration, and compression. However, direct conversion of captured CO${}_2$ introduces complexity due to additional equilibrium buffer reactions, making it challenging to identify active species for reduction in electrochemical studies. This article discusses methods to integrate transport, thermodynamics, and kinetics concepts to identify active carbon sources in RCC. Vapor-Liquid Equilibrium (VLE) and transport models are validated against experimental results obtained in a gastight rotating cylinder electrode reactor and are shown as useful tools for studying RCC in heterogeneous electrocatalysts across different capture agents, solvents, and temperatures. This article establishes an experimental framework for advancing research in electrochemical RCC.

中文翻译：

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反应性 CO2 捕获中的旋转圆柱电极：通过传输、VLE 模型和动力学识别活性 C 物种


本文探讨了理解电化学反应 CO 的技术挑战和潜在方法${}_2$捕获（RCC）机制。 RCC 通过直接转化捕获的二氧化碳提供潜在的能源成本优势${}_2$与需要顺序捕获、浓缩和压缩的传统碳捕获和利用 (CCU) 过程不同。然而，直接转化捕获的CO ${}_2$由于额外的平衡缓冲反应而引入了复杂性，使得在电化学研究中识别用于还原的活性物质变得具有挑战性。本文讨论了整合传输、热力学和动力学概念来识别 RCC 中活性碳源的方法。气液平衡 (VLE) 和传输模型根据气密旋转圆筒电极反应器中获得的实验结果进行了验证，并被证明是研究不同捕获剂、溶剂和温度下非均相电催化剂中 RCC 的有用工具。本文建立了一个推进电化学 RCC 研究的实验框架。