化工学报 ›› 2021, Vol. 72 ›› Issue (9): 4759-4767.DOI: 10.11949/0438-1157.20210026

• 分离工程 • 上一篇    下一篇

MIL-101Cr-F/Cl用于N2O的捕集研究

李媛1,2(),张飞飞1,2,王丽1,2,杨江峰1,2(),李立博1,2,李晋平1,2   

  1. 1.太原理工大学化学化工学院,山西 太原 030024
    2.气体能源高效清洁利用山西省重点实验室,山西 太原 030024
  • 收稿日期:2021-01-08 修回日期:2021-03-01 出版日期:2021-09-05 发布日期:2021-09-05
  • 通讯作者: 杨江峰
  • 作者简介:李媛(1994—),女,硕士研究生,1749784761@qq.com
  • 基金资助:
    国家自然科学基金项目(U20B6004)

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

Yuan LI1,2(),Feifei ZHANG1,2,Li WANG1,2,Jiangfeng YANG1,2(),Libo LI1,2,Jinping LI1,2   

  1. 1.College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
    2.Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Taiyuan 030024, Shanxi, China
  • Received:2021-01-08 Revised:2021-03-01 Online:2021-09-05 Published:2021-09-05
  • Contact: Jiangfeng YANG

摘要:

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。

关键词: 氧化亚氮, 氮气, MIL-101Cr, 阴离子, 吸附分离

Abstract:

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.

Key words: nitrous oxide, nitrogen, MIL-101Cr, anion, adsorption and separation

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