Klemm Aidan, Lee Yun-Yang, Mao Hongchao, Gurkan Burcu
Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, OH, United States.
Front Chem. 2020 Aug 18;8:637. doi: 10.3389/fchem.2020.00637. eCollection 2020.
In recent years, significant development milestones have been reached in the areas of facilitated transport membranes and ionic liquids for CO separations, making the combination of these materials an incredibly promising technology platform for gas treatment processes, such as post-combustion and direct CO capture from air in buildings, submarines, and spacecraft. The developments in facilitated transport membranes involve consistently surpassing the Robeson upper bound for dense polymer membranes, demonstrating a high CO flux across the membrane while maintaining very high selectivity. This mini review focuses on the recent developments of facilitated transport membranes, in particular discussing the challenges and opportunities associated with the incorporation of ionic liquids as fixed and mobile carriers for separations of CO at low partial pressures (<1 atm).
近年来，在用于CO分离的促进传递膜和离子液体领域已经取得了重大的发展里程碑，使得这些材料的组合成为用于气体处理过程（如燃烧后以及从建筑物、潜艇和航天器中的空气中直接捕获CO）的极具前景的技术平台。促进传递膜的发展一直超越致密聚合物膜的罗布森上限，在保持非常高的选择性的同时，展示出跨膜的高CO通量。本综述聚焦于促进传递膜的最新进展，特别讨论了将离子液体作为固定和移动载体用于在低分压（<1 atm）下分离CO所涉及的挑战和机遇。
