Absorption-adsorption of CH4/H2 and CH4/N2 in ZIF-8/glycol-water slurry

PAN Yong; ZHANG Zhe; TONG Xiongshi; LI Hai; LIU Bei; SUN Changyu; CHEN Guangjin

doi:10.11949/j.issn.0438-1157.20150668

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Absorption-adsorption of CH₄/H₂ and CH₄/N₂ in ZIF-8/glycol-water slurry

更新时间：2025-12-10

- Absorption-adsorption of CH₄/H₂ and CH₄/N₂ in ZIF-8/glycol-water slurry
- CIESC Journal Issue 8, Pages: 3130-3136(2015)
- 作者机构：
  
  中国石油大学(北京)重质油国家重点实验室,北京,102249
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20150668
  CLC： Q028.8
- Online First：05 August 2015，
  
  Published：05 August 2015
- 稿件说明：
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PAN Yong, ZHANG Zhe, TONG Xiongshi, et al. Absorption-adsorption of CH₄/H₂ and CH₄/N₂ in ZIF-8/glycol-water slurry[J]. CIESC Journal, 2015, (8): 3130-3136. DOI: 10.11949/j.issn.0438-1157.20150668.
DOI：

PAN Yong, ZHANG Zhe, TONG Xiongshi, et al. Absorption-adsorption of CH₄/H₂ and CH₄/N₂ in ZIF-8/glycol-water slurry[J]. CIESC Journal, 2015, (8): 3130-3136. DOI: 10.11949/j.issn.0438-1157.20150668. DOI：

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。

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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