Adsorption of CH4 and CO2 on Zr-metal organic frameworks

被引:115
作者
Abid, Hussein Rasool [1 ]
Pham, Gia Hung [1 ]
Ang, Ha-Ming [1 ]
Tade, Moses O. [1 ]
Wang, Shaobin [1 ]
机构
[1] Curtin Univ, Dept Chem Engn, Perth, WA 6845, Australia
关键词
Zr-MOF; Ammonium hydroxide; Adsorption; Carbon dioxide; Methane; CARBON-DIOXIDE; SEPARATION; CATALYSIS; STABILITY; STORAGE;
D O I
10.1016/j.jcis.2011.09.060
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Zirconium-metal organic frameworks (Zr-MOFs) were synthesized with or without ammonium hydroxide as an additive in the synthesis process. It was found that addition of ammonium hydroxide would change the textural structure of Zr-MOF. The BET surface area, pore volume, and crystal size of Zr-MOF were reduced after addition of ammonium hydroxide. However, the crystalline structure and thermal stability were maintained and no functional groups were formed. Adsorption tests showed that Zr-MOF presented much higher CO2 adsorption than CH4. Zr-MOF exhibited CO2 and CH4 adsorption of 8.1 and 3.6 mmol/g, respectively, at 273 K, 988 kPa. The addition of ammonium hydroxide resulted in the Zr-MOF with a slight lower adsorption of CO2 and CH4, however, the selectivity of CO2/CH4 is significantly enhanced. (C) 2011 Elsevier Inc. All rights reserved.
引用
收藏
页码:120 / 124
页数:5
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