Article ID Journal Published Year Pages File Type
222458 Journal of Environmental Chemical Engineering 2013 6 Pages PDF
Abstract

Adsorption of volatile organic compounds (VOCs) including acetone, benzene, toluene, ethylbenzene, o-xylene, m-xylene, p-xylene and ethenylbenzene in air on a synthesized MOF-177 and the influence of humidity on adsorption were examined at 25 ± 0.5 °C. Larger adsorption capacity of VOCs on MOF-177 was observed even at relatively high humidity, suggesting that the porous MOF-177 material could be a potential adsorbent for sorptive removal of the unwanted VOCs from air due to its large surface area and pore volume. Adsorption of VOCs on MOF-177 is captured by a pore filling mechanism, showing a negative linear relationship between the volume adsorption capacity and the molecular cross-sectional area of VOCs. Adsorption of VOCs on MOF-177 in humid air will be suppressed by the competition of water molecules and the decomposition of MOF-177 framework structure with water. It was suggested that MOF-177 should not be exposed a long time to air at relatively high RH and pre-drying of gas is required to avoid the competition suppress of water on adsorption and the decomposition of MOF-177 framework structure in the applications of MOF-177 as adsorbents.

Related Topics
Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
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