Separation of CO2/CH4 and CH4/N2 mixtures using MOF-5 and Cu3(BTC)2 |
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作者姓名: | Junmin Li Jiangfeng Yang Libo Li Jinping Li |
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作者单位: | Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China |
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基金项目: | This work was supported by the National Natural Science Foundation of China (No. 21136007 and 51302184). |
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摘 要: | In this paper we used MOF-5 and Cu3(BTC)2 to separate CO2/CH4 and CI-I4/N2 mixtures under dynamic conditions. Both materials were synthesized and pelletized, thus allowing for a meaningful characterization in view of process scale-up. The materials were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). By performing breakthrough experiments, we found that Cu3(BTC)2 separated CO2/CH4 slightly better than MOF-5. Because the crystal structure of Cu3 (BTC)2 includes unsaturated accessible metal sites formed via dehydration, it predominantly interacted with CO2 molecules and more easily captured them. Conversely, MOF-5 with a suitable pore size separated CH4/N2 more efficiently in our breakthrough test.
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关 键 词: | BTC CO2 混合物 分离 扫描电子显微镜 X射线衍射 工艺放大 晶体结构 |
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