Removal of Confined Ionic Liquid from a Metal Organic Framework by Extraction with Molecular Solvents
Removal of Confined Ionic Liquid from a Metal Organic Framework by Extraction with Molecular Solvents
复制标题
DOI：
10.1021/acs.jpcc.7b02289
复制
发表时间：
2017-05
影响因子：
3.7
通讯作者：
Manish Singh;N. Dhumal;Hyung J. Kim;J. Kiefer;J. Anderson
中科院分区：
文献类型：
--
作者：
Manish Singh;N. Dhumal;Hyung J. Kim;J. Kiefer;J. Anderson
离子液体/金属有机骨架杂化材料是一种很有前途的储能材料。用分子溶剂暴露或处理这种复合材料的效果，目的是提取和替代IL，迄今为止尚未进行研究。在这项研究中，丙酮，异丙醇，甲醇，和水被用来去除IL 1-乙基-3-甲基咪唑鎓乙基硫酸盐限制在铜基金属有机框架（CuBTC）。采用振动光谱（FTIR）、粉末X射线衍射（PXRD）、N2吸附、扫描电子显微镜（SEM）和透射电子显微镜（TEM）分析溶剂浸提过程的后果。甲醇被确定为用于IL去除的最佳溶剂，因为它显示出高提取效率而不影响MOF的多孔几何形状和晶体结构。另一方面，丙酮和异丙醇在所采用的条件下不能从CuBTC中完全去除IL。高效水…
Hybrid materials of ionic liquids (ILs) confined in metal organic frameworks (MOF) are promising materials for energy storage. The effects of exposing or treating such composite materials with molecular solvents, e.g., with the aim to extract and replace the IL, have not been studied to date. In this study, acetone, isopropanol, methanol, and water were used to remove the IL 1-ethyl-3-methylimidazolium ethyl sulfate confined in a Cu-based metal–organic framework (CuBTC). The consequences of the solvent extraction process were analyzed using vibrational spectroscopy (FTIR), powder X-ray diffraction (PXRD), N2 adsorption, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Methanol was identified as the best solvent for IL removal as it shows high extraction efficiency without affecting the porous geometry and crystal structure of the MOF. On the other hand, acetone and isopropanol were not able to completely remove the IL from CuBTC under the conditions employed. Water effective...