化学
微尺度化学
吸附
甲烷
吸附
选择性
天然气
金属有机骨架
拉曼光谱
化学工程
色谱法
有机化学
催化作用
物理
数学教育
数学
光学
工程类
作者
Karabi Nath,Alauddin Ahmed,Donald J. Siegel,Adam J. Matzger
摘要
The experimental determination of mixed gas isotherms is challenging and thus rarely performed. Nevertheless, characterizing the performance of adsorbents toward mixtures of gases is critical in most adsorptive separations. Here, the utility of Raman spectroscopy in determining binary gas adsorption isotherms on the microscale with metal-organic framework (MOF) single crystals is demonstrated for quantifying C2H6/CH4 selectivity. The influence of pore size on sorption selectivity is determined experimentally. The technique also allows determination of kinetics of methane adsorption in MOFs, which is critical for refueling times in adsorbed natural gas storage.
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