Adsorption of Carbon Dioxide, Methane, and Nitrogen Gases onto ZIF Compounds with Zinc, Cobalt, and Zinc/Cobalt Metal Centers

被引：17

作者：

Awadallah-F, Ahmed ^{[1
]}

Hillman, Febrian ^{[2
]}

Al-Muhtaseb, Shaheen A. ^{[1
]}

Jeong, Hae-Kwon ^{[2
,3
]}

机构：

[1] Qatar Univ, Dept Chem Engn, POB 2713, Doha, Qatar

[2] Texas A&M Univ, Artie McFerrin Dept Chem Engn, College Stn, TX 77843 USA

[3] Texas A&M Univ, Dept Mat Sci & Engn, College Stn, TX 77843 USA

来源：

JOURNAL OF NANOMATERIALS | 2019年 / 2019卷

基金：

美国国家科学基金会;

关键词：

MICROWAVE-ASSISTED SYNTHESIS; ZEOLITIC-IMIDAZOLATE FRAMEWORKS; FLUE-GAS; CO2; MEMBRANES; ADSORBENTS; REMOVAL; CH4;

D O I：

10.1155/2019/6130152

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

ZIF-8, Co-ZIF-8, and Zn/Co-ZIF-8 are utilized in adsorbing nitrogen (N-2), methane (CH4), and carbon dioxide (CO2) gases at temperatures between 25 and 55 degrees C and pressures up to similar to 1MPa. Equilibrium adsorption isotherms and adsorption kinetics are studied. The dual-site Langmuir equation is employed to correlate the nonisothermal adsorption equilibrium behavior. Generally, N-2 showed the lowest equilibrium adsorption quantity on the three samples, whereas CO2 showed the highest equilibrium adsorption capacity. Amid the ZIF samples, the biggest adsorption quantities of N-2 and CH4 were onto Zn/Co-ZIF-8, whereas the highest adsorption quantity of CO2 was on ZIF-8. The isosteric heats of adsorbing these gases on ZIF-8, Co-ZIF-8, and Zn/Co-ZIF-8 were examined. Moreover, the overall mass transfer coefficients of adsorption at different temperatures were investigated.

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页数：11

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