To address the CO accumulation in atmosphere, various initiatives have been proposed, among which CO capture and utilization (CCU) is regarded as an appealing strategy to reconcile carbon emission and resource utilization. Especially, integrated CO capture and utilization (ICCU), i.e. performing CO capture and in-situ conversion can circumvent the energy-intensive CO desorption step and thus facilitate establishing step- and energy-efficient process, rendering the conversion at mild conditions particularly at low pressure due to substantial activation upon CO uptake. However, CO capture and in-situ conversion is not the simple add-up of these two processes. Its successful implementation relies on the harmonization of CO capture reagents, substrates and the corresponding catalysts. By far, tremendous efforts have been made in this field and a plethora of CO capture reagents including inorganic bases, organic bases, ionic liquids and carbonaceous materials have been utilized to capture CO and the conversion protocols such as hydrogenation, cycloaddition, carboxylative cyclization etc. have been explored for these captured CO. As a result, the valuable products containing methanol, methane, carbonates, carbamates, oxazolidinones, ureas, and quinazolinone have been obtained from CO and more importantly, the CO chemistry theory is also enriched via investigating the structure and reactivity of the captured CO in various reactions. In this review, we summarize the progress on CO capture and in-situ conversion based on the reaction types and corresponding CO absorbents. It’s hoped that this review can shed light on the design of CO capture and in-situ conversion and inspire the further development of this field.

中文翻译：

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CO2 捕获并原位转化为有机分子

为了解决大气中二氧化碳的积累，人们提出了各种倡议，其中二氧化碳捕获和利用（CCU）被认为是协调碳排放和资源利用的一个有吸引力的策略。特别是，集成CO捕获和利用（ICCU），即进行CO捕获和原位转化，可以绕过能源密集型CO解吸步骤，从而有利于建立步骤和能源效率高的工艺，使转化在温和条件下特别是在较低温度下进行。由于吸收 CO 后大量活化而产生的压力。然而，二氧化碳捕获和原位转化并不是这两个过程的简单相加。其成功实施依赖于二氧化碳捕获试剂、底物和相应催化剂的协调。迄今为止，该领域已经做出了巨大的努力，大量的CO捕获试剂包括无机碱、有机碱、离子液体和碳质材料已被用于捕获CO以及氢化、环加成、羧基环化等转化方案。人们对这些捕获的CO进行了探索。结果，从CO中获得了含有甲醇、甲烷、碳酸盐、氨基甲酸酯、恶唑烷酮、尿素和喹唑啉酮的有价值的产物，更重要的是，通过研究结构也丰富了CO化学理论以及捕获的 CO 在各种反应中的反应性。在这篇综述中，我们根据反应类型和相应的CO吸收剂总结了CO捕获和原位转化的进展。希望本文的综述能够为二氧化碳捕集和原位转化的设计提供启发，并启发该领域的进一步发展。