High CO2 solubility in ionic liquids and a tetraalkylammonium-based poly(ionic liquid)
High CO2 solubility in ionic liquids and a tetraalkylammonium-based poly(ionic liquid)
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在离子液体和四烷基铵基聚（离子液体）中具有高 CO2 溶解度
DOI：
10.1039/c0ee00293c
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发表时间：
2010
影响因子：
32.5
通讯作者：
Supasitmongkol S
中科院分区：
文献类型：
--
作者：
Supasitmongkol S
研究了几种咪唑类离子液体、吡啶类离子液体和一种四烷基铵类聚离子液体聚[（对乙烯基苄基）三甲基六氟磷酸铵] P[[VBTMA][PF 6]对二氧化碳的吸收性能。CO2在所有离子液体中的溶解度随吸收温度的降低而显著增加。基于相同的双（三氟甲酰胺）[Tf 2N]阴离子，咪唑鎓、吡啶鎓和三己基十四烷基膦基离子液体均表现出相对相似的CO2溶解度，均高于[ES]阴离子。最高的CO2吸收被发现在聚（离子液体）P[[VBTMA][PF 6]]，然而，单体也显示出比其他离子液体更高的CO2容量。聚（离子液体）的显著之处在于它可以吸附其体重的77%的CO2，对氮气的选择性为70：1。 吸收的CO2气体可以容易地从离子液体和聚（离子液体）中解吸，并且在重复循环中CO2相对于N2的选择性是一致的。该材料可以重复使用多次连续的吸附/解吸循环，而不会损失在一个大规模的反应器的性能，因此代表了严重的候选人用于商业吸附器。
Carbon dioxide (CO2) absorption in several imidazolium-based ionic liquids (ILs), pyridinium-based ionic liquids and a tetraalkylammonium-based poly(ionic liquid) (PIL), poly[(p-vinylbenzyl) trimethylammonium hexafluorophosphate] P[[VBTMA][PF6], was studied. The trend of CO2 solubility in all of the ILs increases dramatically with decreasing absorption temperature. Based on the same bis(triflamide) [Tf2N] anion, imidazolium, pyridinium and trihexyltetradecylphosphonium-based ionic liquids all show relatively similar CO2 solubilities, which were higher than for the [ES] anion. The highest CO2 absorption was found in a poly(ionic liquid) P[[VBTMA][PF6]], however, the monomer also showed higher CO2 capacity than the other ionic liquids. The poly(ionic liquid) is remarkable in that it can adsorb 77% of its body weight of CO2 with a selectivity over nitrogen of 70 : 1. The absorbed CO2 gas can be readily desorbed from ionic liquids and poly(ionic liquid) and the selectivity for CO2 over N2 was consistent over repeated cycles. The materials can be reused several times for consecutive sorption/desorption cycles, without loss of performance in a large-scale reactor and therefore represent serious candidates for use in commercial adsorbers.
影响因子：
32.5
作者：
Aschenbrenner, Ortrud;Styring, Peter
通讯作者：
Styring, Peter