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Effect of different amino modified conditions on carbon dioxide adsorption of NH2-MIL-53(Al)

YANG Zhuhong1, WU Peipei1, ZHANG Suoying1, LIU Hong1, LIU Pengfei1, YANG Qingyuan2, LU Xiaohua1   

  1. 1 State Key Laboratory of Materials-Oriented Chemical Engineering, School of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 210009, Jiangsu, China;
    2 State Key Laboratory of Organic-Inorganic Composites, School of Chemistry and Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2014-01-02 Revised:2014-03-10 Online:2014-05-05 Published:2014-05-05
  • Supported by:

    supported by the National Basic Research Program of China(2013CB733503), the National Natural Science Foundation of China(21136001) and the National High Technology Research and Development Program of China(2006AA03Z455).

不同氨基修饰条件对NH2-MIL-53(Al)CO2吸附性能的影响

杨祝红1, 吴培培1, 张所瀛1, 刘红1, 刘朋飞1, 阳庆元2, 陆小华1   

  1. 1 南京工业大学化学化工学院, 材料化学工程国家重点实验室, 江苏 南京 210009;
    2 北京化工大学有机无机复合材料国家重点实验室, 北京 100029
  • 通讯作者: 杨祝红
  • 基金资助:

    国家重点基础研究发展计划项目(2013CB733503);国家自然科学基金项目(21136001);国家高技术研究发展计划项目(2006AA03Z455)。

Abstract: With the hydrothermal synthesis method, MIL-53(Al) of different amino contents was prepared by changing the content of 2-amino terephthalic acid in ligands. The CO2 adsorption of NH2-MIL-53(Al) was investigated by varing the content, type of amino group and amino functional methods to improve the CO2 capture performance of MIL-53(Al). The synthesized materials were characterized with XRD, TG, infrared spectroscopy and N2 adsorption measurements, and the adsorption performance of NH2-MIL-53 towards CO2 was also investigated on the basis of the adsorption isotherms. The IR results indicated that the peak of —NH2 was found in the range of 3500—3900 cm-1, demonstrating that amino group was loaded successfully. The performance of CO2 adsorption kept fitting with the amino group content of NH2-MIL-53(Al), and when amino group content was 100%, better CO2 adsorption than MIL-53(Al) prepared directly was observed. In addition, when MEA, DBU and MMEN were used for post-synthesis modifications, they all could not improve the adsorption performance of NH2-MIL-53(Al) towards CO2.

Key words: metal-organic framework, NH2-MIL-53(Al), synthesis, CO2 capture, adsorption, functionalization, amino contents, amino types

摘要: 采用水热合成法,通过改变配体中2-氨基对苯二甲酸的含量制备了不同氨基含量的NH2-MIL-53(Al),考察了氨基含量,氨基功能化方法和氨基种类对NH2-MIL-53(Al)的CO2吸附性能的影响。傅里叶变换红外光谱表征(IR)发现在3500~3900 cm-1处存在—NH2基的伸缩振动带,氨基修饰成功。低压下,NH2-MIL-53(Al)的CO2吸附容量随氨基含量的增加而增大,且当氨基含量100%时,其CO2吸附性能优于直接合成的NH2-MIL-53(Al)。合成前修饰比合成后修饰,更有利于提高CO2吸附容量。采用乙醇胺、1,8-二氮杂二环[5.4.0]十一碳-7-烯、NN'-二亚乙基三胺进行后氨基功能化都不能提高MIL-53的CO2吸附能力。

关键词: 金属有机骨架材料, NH2-MIL-53(Al), 合成, CO2捕集, 吸附, 功能化, 氨基含量, 氨基种类

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