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

Abstract

The functionalization of porous metal-organic frameworks (Cu{sub 3}(BTC){sub 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{sub 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. - Graphical Abstract: The adsorption behavior of volatile organic compounds in porous metal-organic frameworks functionalized by polyoxometalates has been systematically evaluated. Highlights: > Functionalization of MOFs was achieved by incorporating Keggin-type POMs. > Introduction of POMs improved the thermal stability and adsorption capacity. > Alkali metal ion-exchange modified the inclusion state and also enhanced the adsorption. > Adsorption enthalpies were estimated to study the impact of POMs and alkali metal cations.

Authors:
 [1]; ; ; ; ;  [1]
  1. Key Laboratory of Polyoxometalates Science of the Ministry of Education, College of Chemistry, Northeast Normal University, Changchun 130024 (China)
Publication Date:
OSTI Identifier:
21580073
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 184; Journal Issue: 11; Other Information: DOI: 10.1016/j.jssc.2011.09.002; PII: S0022-4596(11)00484-1; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ADSORPTION; ALCOHOLS; ALKALI METALS; BENZENE; CATIONS; CYCLOHEXANE; ENTHALPY; ION EXCHANGE; MONOCRYSTALS; ORGANOMETALLIC COMPOUNDS; POROUS MATERIALS; THERMAL GRAVIMETRIC ANALYSIS; TOLUENE; VOLATILE MATTER; VOLATILITY; X-RAY DIFFRACTION; ALKANES; ALKYLATED AROMATICS; AROMATICS; CHARGED PARTICLES; CHEMICAL ANALYSIS; COHERENT SCATTERING; CRYSTALS; CYCLOALKANES; DIFFRACTION; ELEMENTS; GRAVIMETRIC ANALYSIS; HYDROCARBONS; HYDROXY COMPOUNDS; IONS; MATERIALS; MATTER; METALS; ORGANIC COMPOUNDS; PHYSICAL PROPERTIES; QUANTITATIVE CHEMICAL ANALYSIS; SCATTERING; SORPTION; THERMAL ANALYSIS; THERMODYNAMIC PROPERTIES

Citation Formats

Fengji, Ma, Liu Shuxia, E-mail: liusx@nenu.edu.cn, Dadong, Liang, Guojian, Ren, Feng, Wei, Yaguang, Chen, and Zhongmin, Su. Adsorption of volatile organic compounds in porous metal-organic frameworks functionalized by polyoxometalates. United States: N. p., 2011. Web.
Fengji, Ma, Liu Shuxia, E-mail: liusx@nenu.edu.cn, Dadong, Liang, Guojian, Ren, Feng, Wei, Yaguang, Chen, & Zhongmin, Su. Adsorption of volatile organic compounds in porous metal-organic frameworks functionalized by polyoxometalates. United States.
Fengji, Ma, Liu Shuxia, E-mail: liusx@nenu.edu.cn, Dadong, Liang, Guojian, Ren, Feng, Wei, Yaguang, Chen, and Zhongmin, Su. Tue . "Adsorption of volatile organic compounds in porous metal-organic frameworks functionalized by polyoxometalates". United States.
@article{osti_21580073,
title = {Adsorption of volatile organic compounds in porous metal-organic frameworks functionalized by polyoxometalates},
author = {Fengji, Ma and Liu Shuxia, E-mail: liusx@nenu.edu.cn and Dadong, Liang and Guojian, Ren and Feng, Wei and Yaguang, Chen and Zhongmin, Su},
abstractNote = {The functionalization of porous metal-organic frameworks (Cu{sub 3}(BTC){sub 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{sub 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. - Graphical Abstract: The adsorption behavior of volatile organic compounds in porous metal-organic frameworks functionalized by polyoxometalates has been systematically evaluated. Highlights: > Functionalization of MOFs was achieved by incorporating Keggin-type POMs. > Introduction of POMs improved the thermal stability and adsorption capacity. > Alkali metal ion-exchange modified the inclusion state and also enhanced the adsorption. > Adsorption enthalpies were estimated to study the impact of POMs and alkali metal cations.},
doi = {},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = 11,
volume = 184,
place = {United States},
year = {2011},
month = {11}
}