阴、阳离子影响离子液体溶解甲烷性能的研究进展

发布时间：2018-03-24 12:14

本文选题：离子液体　切入点：甲烷　出处：《环境工程》2016年02期

【摘要】：煤矿抽采出的低浓度瓦斯直接排空不仅浪费清洁能源而且加剧温室效应。离子液体(IL)是近年来用于气体分离的热点研究对象。综述了利用IL分离气体,特别在溶解CH_4气体方面的研究进展,归纳了具有高效溶解CH4能力的IL结构特征,以及阴阳离子对IL溶解CH_4的影响规律。分析结果表明CH_4在大部分ILs中的溶解度较小;与咪唑类ILs相比,阴离子为[FAP]~-、[doc]~-、[Tf_2N]~-、[TMPP]~-,阳离子取代链为长烷烃的季膦类和季胺类ILs具有更强的溶解CH_4的能力。特别是[P4444][TMPP]和[P(14)666][TMPP]对CH_4表现出优越的溶解性,可考虑用这2种ILs存储CH_4。至于两者能否用于浓缩CH_4,还需实验测试[P4444][TMPP]和[P(14)666][TMPP]溶解CO_2和N_2的情况,以及对溶解过程的影响。
[Abstract]:Direct emptying of low concentration gas extracted from coal mines not only wastes clean energy but also intensifies Greenhouse Effect. Ionic liquid is a hot research object for gas separation in recent years. Especially in the aspect of dissolving CH_4 gas, the structure characteristics of IL with high solubility of CH4 and the influence of anion on CH_4 dissolution of IL are summarized. The results show that the solubility of CH_4 in most ILs is small. Compared with imidazole ILs, the anions [FAP] -, [doc] -, [Tf_2N] -, [TMPP] -, quaternary phosphines and quaternary amines with cationic substituted chain have stronger ability to dissolve CH_4, especially [P4444] [TMPP] and [TMPP] have superior solubility to CH_4, especially [P4444] [TMPP] and [TMPP] have superior solubility to CH_4, and [P4444] [TMPP] and [TMPP] have superior solubility to CH_4, especially [P4444] [TMPP] and [TMPP]. We can consider using these two kinds of ILs to store CH4. As to whether they can be used to concentrate CH4, we also need to test experimentally how [P4444] [TMPP] and [TMPP] [TMPP] dissolve CO_2 and N\\\ {\ {\}\\\
【作者单位】：河南理工大学安全科学与工程学院;瓦斯地质与瓦斯控制国家重点实验室培育基地;
【基金】：国家自然科学基金(51304073,51304071) 河南省教育厅重点项目(13A440324,12B44004) 河南理工大学博士基金(B2012-068,B2012-085)
【分类号】：O645.1;TD712

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