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Ultramicroporous organic materials for selective separation of xenon from krypton
Microporous and Mesoporous Materials ( IF 5.2 ) Pub Date : 2020-06-25 , DOI: 10.1016/j.micromeso.2020.110390
Huiyan Li , Gaimei Wang , Kok-Giap Haw , Jialu Li , Huazhen Rong , Hao Ren , Yongyan Deng , Ye Yuan , Guangshan Zhu , Xiaoqin Zou

Xenon is found a wide range of applications in our modern life, and its purification and separation is of paramount importance in industry. For this goal, we have synthesized several porous organic frameworks (POFs) from the perspective of pore chemistry. The prepared materials (CTF-0, PAF-45, PAF-67) show almost identical pore size of ∼5.0 Å, appreciable surface areas (528.4–1158.5 m2 g−1), substantial micropore volumes (0.158–0.3 cm3 g−1) and high stabilities (400–600 °C). Adsorption measurements demonstrate that the prepared materials have xenon uptakes in the range of 25.2–62.8 cm3 g−1 at 1.0 bar and 298 K, and Henry predictions reveal that they are selective for separating xenon from krypton with selectivities of 5.2–8.1. As a representative material, PAF-45 has been tested for xenon separation by the breakthrough experiment, and selectivity of 12.3 for xenon over krypton and xenon capacity of 92.4 mmol kg−1 are obtained.



中文翻译:

用于从from中选择性分离氙的超微孔有机材料

氙气在现代生活中得到了广泛的应用,其净化和分离在工业中至关重要。为了这个目标,我们从孔隙化学的角度合成了几种多孔有机骨架(POF)。所制备的材料(CTF-0,PAF-45,PAF-67)显示出约5.0埃的几乎相同的孔径,可观的表面积(528.4–1158.5 m 2  g -1),大量微孔体积(0.158–0.3 cm 3  g)-1)和高稳定性(400–600°C)。吸附测量表明,所制备的材料对氙的吸收范围为25.2–62.8 cm 3  g -1在1.0 bar和298 K的压力下,Henry的预测表明,它们对for与氙的分离具有选择性,选择性为5.2–8.1。作为代表性材料,已经通过突破性实验测试了PAF-45的氙分离效果,氙对over的选择性为12.3,氙容量为92.4 mmol kg -1

更新日期:2020-06-25
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