多孔液体在CO2捕集与利用领域的研究进展

Research progress in CO2 capture and separation of porous liquids

摘要:

为助力中国早日实现“双碳目标”，深入落实化工领域绿色低碳可持续发展的重要举措，吸附-吸收耦合有望成为气体分离的绿色变革性分离技术，其关键是高性能吸附（收）材料的开发。多孔液体（PLs）作为一类具有永久孔隙的液体材料，兼具了液体吸收剂的易于管道输送、传质传热效果好等优点和固体吸附剂的高比表面积、高孔隙率等优点，有望成为新一代CO2捕集的绿色变革性介质。该文首先简单介绍了多孔液体发展脉络；然后，重点聚焦于多孔液体在CO2的吸附/吸收、膜分离、催化转化等领域的应用展开探讨，并对多孔液体性能和优缺点进行分析归纳。最后，对多孔液体目前面临的挑战和未来发展趋势进行了展望。

Abstract:

In order to accelerate our country's achieving the goal of "double carbon" in advance, and deeply implement the important measures of green, low-carbon and sustainable development of the chemical industry, recent studies show that adsorption-absorption coupling separation technology is expected to be a green and revolutionary separation technology for gas separation, the key to which is the development of high-performance adsorption materials. As a liquid material with permanent porosity, porous liquids (PLs) combine the advantages of liquid absorbents (e.g., easy pipeline transportation, favorable mass and heat transfer, high specific surface area, etc.) with those of solid adsorbents (e.g., high porosity) and are expected to be a new generation of green, transformative media for CO2 capture. Here, first, the developmental lineage of PLs is presented, followed by a summary and detailed discussion of the applications of PLs in CO2 adsorption, membrane separation, and catalytic conversion. And summarize the performance and advantages and disadvantages of porous liquids. Finally, the challenges and difficulties faced by PLs are presented as future trends.