MIL-101Cr-F/Cl用于N2O的捕集研究

氧化亚氮（N₂O）是仅次于CO₂和CH₄的第三大温室气体，对其捕集具有资源回收和减排温室气体的双重价值。本文通过添加氢氟酸和盐酸合成了末端具有不同阴离子的MIL-101Cr材料：MIL-101（Cr）-F和MIL-101（Cr）-Cl，通过XRD、BET、SEM等对样品进行了表征，测试并分析了两种样品对N₂O和N₂的吸附性能，进行了选择性和吸附热的计算以及混合气体的穿透模拟。研究结果表明，MIL-101（Cr）-Cl拥有目前最高的N₂O吸附容量（6.43 mmol/g，298 K）和N₂O/N₂选择性（267），混合气体（N₂O/N₂=0.1%/99.9%）穿透模拟结果显示MIL-101（Cr）-Cl具有更加优异的微量N₂O捕获能力。

Study on the capture of N2O by MIL-101Cr-F/Cl

Nitrous oxide (N₂O) is the third largest greenhouse gas after CO₂ and CH₄, and its capture has the dual value of resource recovery and greenhouse gas emission reduction. In this paper, MIL-101(Cr) with different anion terminals were synthesized by adding hydrofluoric acid and hydrochloric acid separately, named MIL-101(Cr)-F and MIL-101(Cr)-Cl, the synthesized samples were characterized by XRD, BET and SEM, et al. Single component adsorption isotherms of N₂O and N₂ were tested, and the selectivity of N₂O/N₂ and corresponding adsorption heat of gases were also calculated. Additionally, the simulation of mixture (N₂O/N₂=0.1%/99.9%) breakthrough were carried out. As the result, MIL-101(Cr)-Cl with the highest N₂O adsorption capacity (6.43 mmol/g, 298 K) and N₂O/N₂ selectivity (267) were reported. Furthermore, the simulation result confirmed that MIL-101(Cr)-Cl has great potential to capture trace amount of N₂O.