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›› 2013, Vol. 13 ›› Issue (1): 146-151.

• 材料工程专栏 • 上一篇    下一篇

金属有机骨架材料MIL-101(Cr)-NH2的合成及其气体吸附性能

周晶晶 刘开宇 孔春龙 陈亮   

  1. 中南大学化学化工学院 中南大学化学化工学院 中国科学院宁波材料技术与工程研究所 中国科学院宁波材料技术与工程研究所
  • 收稿日期:2013-01-07 修回日期:2013-01-25 出版日期:2013-02-20 发布日期:2013-02-20
  • 通讯作者: 刘开宇

Synthesis of MIL-101(Cr)-NH2 and Its Gas Adsorption Properties

ZHOU Jing-jing LIU Kai-yu KONG Chun-long CHEN Liang   

  1. School of Chemistry and Chemical Engineering, Central South University School of Chemistry and Chemical Engineering, Central South University Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences
  • Received:2013-01-07 Revised:2013-01-25 Online:2013-02-20 Published:2013-02-20
  • Contact: LIU Kai-yu

摘要: 采用碱辅助的原位水热合成法制备了纳米金属有机骨架材料MIL-101(Cr)-NH2,研究了合成液中NaOH加入量对其晶体结构、形貌和孔结构的影响,测定了273.4, 298和333 K下CO2和N2在MIL-101(Cr)-NH2上的等温吸附曲线,并对其性质进行了表征. 结果表明,加入适量碱(NaOH:NH2BDC=4:2, 摩尔比)可得到粒径约40 nm的MIL-101(Cr)-NH2纳米颗粒,其BET比表面积可达2594 m2/g,孔容为2.11 cm3/g, 273.4 K时CO2的吸附量可达25.9 mmol/g, CO2与N2的理想分离系数为19.4.

关键词: MIL-101(Cr)-NH2, 水热合成, 气体吸附

Abstract: The nano MIL-101(Cr)-NH2 material was synthesized by in situ hydrothermal method. The addition amount of NaOH in the reaction solution and its influence on the crystal structure, morphology and pore feature of MIL-101(Cr)-NH2 were investigated. Adsorption isotherms of CO2 and N2 at 273.4, 298 and 333 K on MIL-101(Cr)-NH2 were measured. And MIL-101(Cr)-NH2 was characterized. The results show that nano MIL-101(Cr)-NH2 particles with the size about 40 nm and the specific surface area as high as 2594 m2/g and pore volume 2.11 cm3/g could be synthesized at the optimal condition (NaOH:NH2BDC=4:2, molar ratio). The material has good CO2 adsorption capacity and selectivity, its CO2 adsorption capacity and ideal separation factor of CO2 over N2 could reach 25.9 mmol/g and 19.4 at 273.4 K, respectively.

Key words: MIL-101(Cr)-NH2, hydrothermal synthesis, gas adsorption

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