| ZIF-8/乙二醇-水浆液吸收-吸附CH4/H2和CH4/N2 |
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| 引用本文： | 潘勇,张喆,童雄师,李海,刘蓓,孙长宇,陈光进. ZIF-8/乙二醇-水浆液吸收-吸附CH4/H2和CH4/N2[J]. 化工学报, 2015, 66(8): 3130-3136. DOI: 10.11949/j.issn.0438-1157.20150668 |
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| 作者姓名： | 潘勇 张喆 童雄师 李海 刘蓓 孙长宇 陈光进 |
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| 作者单位： | 中国石油大学(北京)重质油国家重点实验室, 北京 102249 |
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| 基金项目： | 国家自然科学基金项目(U1162205)。 |
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| 摘 要： | 为了有效地捕集焦炉气及煤层气中的甲烷,提出了一种新型捕集技术:吸收-吸附组合方法,该方法通过把ZIF-8分散到乙二醇水溶液中形成悬浮浆液,实现对甲烷组分的捕集。首先测定了甲烷、氮气和氢气在浆液中的吸收-吸附容量,得出吸着量大小的顺序为CH4> N2> H2,然后对CH4/H2和CH4/N2的混合气进行吸着平衡研究,发现浆液均能有选择性地吸着甲烷。对浆液中回收的ZIF-8材料进行XRD表征,分析证明在整个吸着过程中ZIF-8结构没有发生变化并且ZIF-8/乙二醇-水浆液能重复利用。
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| 关 键 词： | ZIF-8 乙二醇水溶液 甲烷 吸收-吸附 平衡 |
| 收稿时间： | 2015-05-22 |
| 修稿时间： | 2015-05-31 |
Absorption-adsorption of CH4/H2 and CH4/N2 in ZIF-8/glycol-water slurry |
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| PAN Yong,ZHANG Zhe,TONG Xiongshi,LI Hai,LIU Bei,SUN Changyu,CHEN Guangjin. Absorption-adsorption of CH4/H2 and CH4/N2 in ZIF-8/glycol-water slurry[J]. Journal of Chemical Industry and Engineering(China), 2015, 66(8): 3130-3136. DOI: 10.11949/j.issn.0438-1157.20150668 |
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| Authors: | PAN Yong ZHANG Zhe TONG Xiongshi LI Hai LIU Bei SUN Changyu CHEN Guangjin |
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| Affiliation: | State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China |
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| Abstract: | In order to capture methane effectively from coke oven gas and coalbed methane, this paper proposes a new capture technology: absorption-adsorption combined method to capture methane by suspending ZIF-8 (zeolitic imidazolate framework-8) in a glycol-water solution. Firstly, the absorption-adsorption capacities of methane, nitrogen and hydrogen in the slurry were measured. The order of adsorption capacities were CH4> N2> H2. Then the ability of separation of the slurry for the mixtures of CH4/H2 and CH4/N2 were investigated. It was found that the mixtures can be separated effectively. The recovered ZIF-8 from the slurry was analyzed using XRD, and the results demonstrated that ZIF-8 did not change throughout the separation process and ZIF-8/glycol-water slurry can be reused. |
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| Keywords: | ZIF-8 glycol-water solution CH4 absorption-adsorption equilibrium |
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