| FeTPPs-CuBTC协同强化低浓度煤层气吸附分离 |
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| 引用本文： | 席国君,刘子涵,雷广平.FeTPPs-CuBTC协同强化低浓度煤层气吸附分离[J].化工学报,2022,73(9):3940-3949. |
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| 作者姓名： | 席国君 刘子涵 雷广平 |
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| 作者单位： | 中北大学能源动力工程学院，山西 太原 030051 |
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| 基金项目： | 国家自然科学基金项目(51906232) |
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| 摘 要： | 高效分离CH4/N2混合物是实现低浓度煤层气利用的关键之一。基于原位封装策略采用一锅法将FeTPPs成功封装至CuBTC的孔隙中，通过两者的协同作用达到强化CH4/N2混合气体吸附分离的目的。实验结果显示，FeTPPs的封装增强了吸附剂与CH4间的相互作用反而削弱了吸附剂与N2间的相互作用，因此FeTPPs的封装有利于CH4/N2混合气体的吸附分离。基于理想吸附溶液理论(IAST)计算发现，在几乎不损失CH4吸附量的情况下，常温常压下FeTPPs@CuBTC复合材料对CH4/N2混合气体的吸附选择性可达5.4，是CuBTC的1.28倍，也高于目前已报道的大部分zeotile和MOF材料。证实了FeTPPs封装策略在低浓度煤层气分离领域的应用潜力，也为新型吸附剂材料的开发提供了新的设计思路。
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| 关 键 词： | 低浓度煤层气 二元混合物 吸附 分离 金属卟啉 金属-有机骨架 协同强化 |
| 收稿时间： | 2022-03-11 |
Enhanced adsorption and separation of low concentration coalbed methane based on synergistic effect between FeTPPs and CuBTC |
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| Guojun XI,Zihan LIU,Guangping LEI.Enhanced adsorption and separation of low concentration coalbed methane based on synergistic effect between FeTPPs and CuBTC[J].Journal of Chemical Industry and Engineering(China),2022,73(9):3940-3949. |
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| Authors: | Guojun XI Zihan LIU Guangping LEI |
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| Affiliation: | School of Energy and Power Engineering, North University of China, Taiyuan 030051, Shanxi, China |
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| Abstract: | Efficient separation of CH4/N2 mixture is one of the keys to realize the utilization of low concentration coalbed methane. Based on the in-situ encapsulation strategy, FeTPPs were successfully encapsulated into the pores of CuBTC by one-pot method, and the purpose of enhancing the adsorption and separation of CH4/N2 mixed gas was achieved through the synergistic effect of the two. As a result, encapsulation of FeTPPs enhanced the interactions between CH4 and adsorbent, while the interactions between N2 and adsorbent were weakened. Therefore, the encapsulation of FeTPPs is beneficial for the CH4/N2 mixture separation. Based on the calculation of ideal adsorption solution theory (IAST), it was found that the selectivity of FeTPPs@CuBTC reached 5.4 under normal temperature and pressure without loss of CH4 adsorption capacity, which is 1.28 times that of CuBTC and higher than most reported zeotile and MOFs. The study confirms the potential application of FeTPPs packaging strategy for low concentration coalbed methane, and also provides a new design idea for the development of new adsorbent materials. |
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| Keywords: | low concentration coalbed methane binary mixture adsorption separation metalloporphyrin metal-organic framework synergistic effect |
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