| 一维直孔道MOFs对CH_4/N_2和CO_2/CH_4的分离 |
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| 引用本文： | 张倬铭,杨江峰,陈杨,王勇,李立博,李晋平.一维直孔道MOFs对CH_4/N_2和CO_2/CH_4的分离[J].化工学报,2015,66(9):3549-3555. |
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| 作者姓名： | 张倬铭 杨江峰 陈杨 王勇 李立博 李晋平 |
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| 作者单位： | 太原理工大学精细化工研究所, 山西 太原 030024 |
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| 基金项目： | 国家自然科学基金项目(21136007,51302184);国家重点基础研究发展计划项目(2014CB260402);山西省自然科学基金项目(2014021036-1)。 |
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| 摘 要： | 非常规天然气未来可以作为常规天然气的有效补充,其中低浓度煤层气和生物质燃气分别需要脱除大量的N2和CO2以达到富集和纯化CH4的目的。本研究针对CH4/N2这一对较难分离的气体组合,选取了具有一维菱形孔道的MOFs材料Cu(INA)2作为吸附剂,将合成的样品做了XRD和TG表征,测试了纯气体CO2、CH4和N2的吸附曲线,利用巨正则系综蒙特卡罗(GCMC)分子模拟和理想吸附溶液理论(IAST)计算了气体的吸附热和该材料对于CH4/N2和CO2/CH4的吸附选择性系数;3 MPa压力下制备的颗粒样品填装吸附分离装置,进行了混合气体CH4/N2(50%/50%)和CO2/CH4(50%/50%)的穿透试验,分离的结果显示,Cu(INA)2不仅高选择性地吸附CH4/N2混合物中的CH4(SCH4/N2=10),而且对CH4/N2的分离效果优于CO2/CH4。
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| 关 键 词： | 甲烷 分离 吸附剂 金属有机骨架 吸附选择性 穿透试验 |
| 收稿时间： | 2015-06-09 |
| 修稿时间： | 2015-06-16 |
Separation of CH4/N2 and CO2/CH4 mixtures in one dimension channel MOFs |
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| ZHANG Zhuoming,YANG Jiangfeng,CHEN Yang,WANG Yong,LI Libo,LI Jinping.Separation of CH4/N2 and CO2/CH4 mixtures in one dimension channel MOFs[J].Journal of Chemical Industry and Engineering(China),2015,66(9):3549-3555. |
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| Authors: | ZHANG Zhuoming YANG Jiangfeng CHEN Yang WANG Yong LI Libo LI Jinping |
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| Affiliation: | Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China |
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| Abstract: | As powerful and effective supplement to conventional natural gas in future, the unconventional gas including low concentration coalbed methane and biomass need to remove a large amount of N2 and CO2 to achieve enrichment and purification of CH4. To separate N2 and O2, Cu(INA)2 with pores of a one-dimensional rhombus was chosen as an adsorbent. The synthesized sample was characterized with XRD and TG. Combined with CO2, CH4 and N2 adsorption curves, the grand canonical ensemble Monte Carlo (GCMC) molecular modeling and the ideal adsorbed solution theory (IAST) were used to calculate the adsorption heat of gas and adsorption selectivities for binary mixtures (CH4/N2 and CO2/CH4), separately; For breakthrough separation experiments, powder samples of Cu(INA)2 were pelletized into particles of a certain size under pressure of 3 MPa. The result revealed that Cu(INA)2 has not only high selective adsorption of CH4 in mixture of CH4/N2 (SCH4/N2=10), but also better separation for CH4/N2 than CO2/CH4. |
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| Keywords: | methane separation adsorbents metal-organic frameworks adsorption selectivity breakthrough test |
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