Novel imidazolium-based poly(ionic liquid)s: preparation, characterization, and absorption of CO2
Novel imidazolium-based poly(ionic liquid)s: preparation, characterization, and absorption of CO2
复制标题
新型咪唑基聚（离子液体）：制备、表征和 CO2 吸收
DOI：
10.1002/pat.1973
复制
发表时间：
2012-05-01
影响因子：
3.4
通讯作者：
Wang, Rong-Min
中科院分区：
文献类型：
--
作者：
Xiong, Yu-Bing;Wang, Hong;Wang, Rong-Min
开发新型的二氧化碳捕集材料对资源利用和环境保护具有重要意义。本研究制备了含对称酯基和羟基的咪唑类离子液体，并通过熔融缩聚法合成了相应的聚合物。采用质子核磁共振、凝胶渗透色谱、差示扫描量热、X射线衍射和扫描电镜等手段对聚合物的结构和性能进行了表征。此外，使用热重分析仪在低压（648.4mmHg CO2）和25 ℃的温度下研究IL单体和PIL的CO2吸附行为。1，3-双（2-羟乙基）-咪唑六氟磷酸盐（[HHIm] PF 6，10 mol%）的CO2吸附容量在所研究的所有IL单体和PIL中最高。这一能力也远远高于以前报告的国际劳工组织的能力。此外，[HHIm] PF 6在短时间内达到吸附平衡。版权所有（C）2011约翰威利父子有限公司
The development of novel materials for carbon dioxide (CO2) capture is of great importance in resource utilization and environmental preservation. In this study, imidazolium-based ionic liquids (ILs) with symmetrical ester and hydroxyl groups were prepared, and their corresponding polymer were synthesized by melt condensation polymerization. The structure and properties of the poly(ionic liquid)s (PILs) were characterized by proton nuclear magnetic resonance, gel permeation chromatograph, differential scanning calorimetry, X-ray diffraction, and scanning electron microscopy. In addition, the CO2 sorption behavior of the IL monomers and PILs were studied at a low pressure (648.4 mmHg CO2) and under a temperature of 25 degrees C using a thermogravimetric analyzer. The CO2 sorption capacity of 1,3-bis(2-hydroxyl ethyl)-imidazolium hexafluorophosphate ([HHIm]PF6, 10 mol%) was the highest among all the IL monomers and PILs studied. This capacity is also much higher than those reflected of previously reported ILs. Moreover, the sorption equilibrium of [HHIm]PF6 was achieved within a short time. Copyright (C) 2011 John Wiley & Sons, Ltd.