Adsorption of volatile organic compounds in porous metal-organic frameworks functionalized by polyoxometalates

被引：64
|
作者：
Ma, Feng-Ji [1 ]
Liu, Shu-Xia [1 ]
Liang, Da-Dong [1 ]
Ren, Guo-Jian [1 ]
Wei, Feng [1 ]
Chen, Ya-Guang [1 ]
Su, Zhong-Min [1 ]
机构：
[1] NE Normal Univ, Key Lab Polyoxometalates Sci, Minist Educ, Coll Chem, Changchun 130024, Peoples R China
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 2011年 / 184卷 / 11期
关键词：
Porous metal-organic frameworks; Polyoxometalates; Functionalization; Adsorption; Volatile organic compounds; BUILDING-BLOCKS; GAS-ADSORPTION; H-2; OXIDE;
D O I：
10.1016/j.jssc.2011.09.002
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The functionalization of porous metal-organic frameworks (Cu-3(BTC)(2)) was achieved by incorporating Keggin-type polyoxometalates (POMs), and further optimized via alkali metal ion-exchange. In addition to thermal gravimetric analysis, IR, single-crystal X-ray diffraction, and powder X-ray diffraction, the adsorption properties were characterized by N-2 and volatile organic compounds (VOCs) adsorption measurements, including short-chain alcohols (C < 4), cyclohexane, benzene, and toluene. The adsorption enthalpies estimated by the modified Clausius-Clapeyron equation provided insight into the impact of POMs and alkali metal cations on the adsorption of VOCs. The introduction of POMs not only improved the stability, but also brought the increase of adsorption capacity by strengthening the interaction with gas molecules. Furthermore, the exchanged alkali metal cations acted as active sites to interact with adsorbates and enhanced the adsorption of VOCs. (C) 2011 Elsevier Inc. All rights reserved.
引用
收藏
页码：3034 / 3039
页数：6
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