Hong Anh N, Yang Huajun, Li Tong, Wang Yong, Wang Yanxiang, Jia Xiaoxia, Zhou Angel, Kusumoputro Emily, Li Jinping, Bu Xianhui, Feng Pingyun
Department of Chemistry, University of California, Riverside, California 92521, United States.
Department of Chemistry and Biochemistry, California State University, Long Beach, California 90840, United States.
ACS Appl Mater Interfaces. 2021 Nov 10;13(44):52160-52166. doi: 10.1021/acsami.1c10391. Epub 2021 Jul 8.
The development of effective propane (CH)-selective adsorbents for the purification of propylene (CH) from CH/CH mixture is a promising alternative to replace the energy-intensive cryogenic distillation. However, few materials possess the dual desirable features of propane selectivity and high uptake capacity. Here, we report a family of pore-space-partitioned crystalline porous materials (CPM) with remarkable CH uptake capacity (up to 10.9 mmol/g) and the highly desirable yet uncommon CH selectivity (up to 1.54 at 0.1 bar and 1.44 at 1 bar). The selectivity-capacity synergy endows them with record-performing CH/CH separation potential (i.e., CH recovered from the mixture). Moreover, these CPMs exhibit outstanding properties including high stability, low regeneration energy, and multimodular chemical and geometrical tunability within the same isoreticular framework. The high CH/CH separation performance was further confirmed by the breakthrough experiments.
开发用于从丙烷/丙烯混合物中提纯丙烯的高效丙烷选择性吸附剂是一种有望替代能源密集型低温蒸馏的方法。然而，很少有材料同时具备丙烷选择性和高吸附容量这两个理想特性。在此，我们报道了一类孔隙空间分隔的结晶多孔材料（CPM），其具有显著的丙烷吸附容量（高达10.9 mmol/g）以及高度理想但不常见的丙烷选择性（在0.1 bar下高达1.54，在1 bar下高达1.44）。选择性 - 容量协同作用赋予它们创纪录的丙烷/丙烯分离潜力（即从混合物中回收丙烷）。此外，这些CPM表现出优异的性能，包括高稳定性、低再生能量以及在同一等规骨架内的多模块化学和几何可调性。穿透实验进一步证实了其高丙烷/丙烯分离性能。
