Separation of methane/ethylene gas mixtures efficiently by using ZIF-67/water-ethylene glycol slurry

被引：19

作者：

Pan, Yong ^{[1
]}

Jia, Chongzhi ^{[1
]}

Liu, Bei ^{[1
]}

Zhang, Zhe ^{[1
]}

Tong, Xiongshi ^{[1
]}

Li, Hai ^{[1
]}

Li, Zhi ^{[1
]}

Ssebadduka, Ronald ^{[1
]}

Sun, Changyu ^{[1
]}

Yang, Lanying ^{[1
]}

Chen, Guangjin ^{[1
]}

机构：

[1] China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China

来源：

FLUID PHASE EQUILIBRIA | 2016年 / 414卷

基金：

中国国家自然科学基金;

关键词：

Absorption-adsorption; ZIF-67; Separation; Ethylene; Slurry; METAL-ORGANIC FRAMEWORK; ZEOLITIC IMIDAZOLATE FRAMEWORKS; SIZE-SELECTIVE CATALYSIS; MOLECULAR SIMULATION; CO2; CAPTURE; ADSORPTION; ETHYLENE; CARBON; PROPYLENE; PROPANE;

D O I：

10.1016/j.fluid.2016.01.003

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

By using Zeolitic imidazolate framework-67(ZIF-67)/water-ethylene glycol slurry, we separated methane/ethylene gas mixtures by the absorption-adsorption method. The influences of temperature, mass fraction of ZIF-67 in ZIF-67/water-ethylene glycol slurry, pressure, and gas-slurry ratio on the separation performance were studied systematically. We found lower temperature, mass fraction of ZIF-67 of 0.15, higher gas liquid ratio, and higher operation pressure are suitable for separation of methane/ethylene mixture. The experimental results show by using the slurry we synthesized, the mole fraction of ethylene in gas phase decreases from 74.8 to 53.0%, the selectivity coefficient reaches 10 (much higher than that of solid ZIF-67), and more than 68% of C2H4 can be recovered after one stage of the absorption-adsorption process. Sorption enthalpy of methane and ethylene at low loading is only 11 and 17 kJ/mol, respectively. In addition, the crystal structure of ZIF-67 remains intact after 20 adsorption/desorption cycles. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：14 / 22

页数：9

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