高等学校化学学报 ›› 2022, Vol. 43 ›› Issue (1): 20210578.doi: 10.7503/cjcu20210578

• 研究论文 • 上一篇    下一篇

双金属同构金属-有机框架材料CAU-21-Al/M的合成、 氮气吸附及复合膜性能

张弛1, 孙福兴2(), 朱广山1()   

  1. 1.东北师范大学化学学院, 多酸与网格材料化学教育部重点实验室, 长春 130024
    2.吉林大学化学学院, 无机合成与制备化学国家重点实验室, 长春 130012
  • 收稿日期:2021-08-16 出版日期:2022-01-10 发布日期:2021-09-26
  • 通讯作者: 孙福兴,朱广山 E-mail:fxsun@jlu.edu.cn;zhugs@nenu.edu.cn
  • 基金资助:
    高等学校学科创新引智计划项目(B18012)

Synthesis, N2 Adsorption and Mixed-matrix Membrane Performance of Bimetal Isostructural CAU-21

ZHANG Chi1, SUN Fuxing2(), ZHU Guangshan1()   

  1. 1.Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education,Faculty of Chemistry,Northeast Normal University,Changchun 130024,China
    2.State Key Laboratory of Inorganic Synthesis & Preparative Chemistry,Jilin University,Changchun 130012,China
  • Received:2021-08-16 Online:2022-01-10 Published:2021-09-26
  • Contact: SUN Fuxing,ZHU Guangshan E-mail:fxsun@jlu.edu.cn;zhugs@nenu.edu.cn
  • Supported by:
    the "111" Project, China(B18012)

摘要:

通过掺杂金属的方式实现了双金属同构金属-有机框架材料的制备, 采用X射线粉末衍射(PXRD)确定了多种金属在双金属CAU-21材料中的最大掺杂量, 使用扫描电子显微镜(SEM)观察了掺杂金属对材料形貌的影响. 热重分析(TGA)结果表明, CAU-21系列材料均具有较好的热稳定性. 氮气气体吸附测试及以CAU-21-Al/M为填料的混合基质膜对N2气的渗透实验结果与掺杂金属离子尺寸大小呈相反的关系, 证实了双金属可实现对孔道结构及气体吸附性能的调控.

关键词: 同构金属-有机框架材料, 气体吸附, 复合膜气体渗透

Abstract:

The preparation of bimetal isostructural metal-organic frameworks(MOFs)was achieved by doping metals, and the maximum metal doping amounts of CAU-21-Al/M that can maintain the original crystal configuration were obtained from powder X-ray diffraction(PXRD)patterns. Scanning electron microscopy(SEM)was used to observed the influence of doping metals on the morphology of materials, and thermogravimetric analysis(TGA)showed that CAU-21-Al/M(M=Fe, Ga, In, Gd) all had good thermal stability. The results of nitrogen gas adsorptions and the gas permeation experiments of mixed-matrix membranes with CAU-21-Al/M as fillers are inversely related to the size of doped metal ions, verifing that dopping metal can effectively control the pore structure of MOFs.

Key words: Isostructral metal-organic framework, Gas adsorption, Gas permeability of composite membrane

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