Currently, carbon dioxide (CO₂) is regarded as a renewable C1 feedstock for the mass production of several products such as ureas, carbamates, carbonates, carboxylic acid derivatives, polymers, etc. Moreover, a collection of biological heterocycles with diversified frameworks derived from the fixation of CO₂ are also detected. In such transformations, expensive catalyst systems (e.g. transitional metal complexes, and task-specific ionic liquids), additives, and harsh reaction conditions have been deployed, respectively. In contrast, cheap and easy-to-handle alkali metal salts have been recently explored as powerful catalysts in the transformation of CO₂ at milder and greener conditions. In this review, we cover a thorough overview of alkali metal salt-mediated fixation of CO₂ into different classes of value-added products. Furthermore, the detailed reaction mechanisms as well as the excellency of these alkali metal catalysts in terms of stability, recyclability are also addressed.

当前，二氧化碳（CO ₂）被视为可再生的C1原料，用于大量生产尿素，氨基甲酸酯，碳酸盐，羧酸衍生物，聚合物等几种产品。此外，一系列具有多种骨架的生物杂环衍生自还可以检测到CO ₂的固定。在这种转化中，已经分别部署了昂贵的催化剂体系（例如过渡金属络合物和特定任务的离子液体），添加剂和苛刻的反应条件。相反，最近已经研究了廉价且易于处理的碱金属盐作为转化CO _2的有力催化剂。在温和和绿色的条件下。在这篇评论中，我们全面介绍了碱金属盐介导的CO ₂固定到不同类别的增值产品中的过程。此外，还讨论了详细的反应机理以及这些碱金属催化剂在稳定性，可循环性方面的优越性。