CO2/Hydrocarbon Selectivity of Trihexyl(tetradecyl)phosphonium-Based Ionic Liquids
CO2/Hydrocarbon Selectivity of Trihexyl(tetradecyl)phosphonium-Based Ionic Liquids
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三己基(十四烷基)鏻基离子液体的CO2/烃选择性
DOI：
10.1021/acs.iecr.2c02281
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Yamada Hidetaka
中科院分区：
文献类型：
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作者：
Suzuki Yuki;Kodama Daisuke;Mori Hirotoshi;Kuroki Nahoko;Chowdhury Firoz Alam;Yamada Hidetaka
在之前的一项研究中，使用真实溶剂类导体筛选模型（cosmoo - rs）方法和机器学习预测了几种离子液体（ILs）的CO2Henry定律常数，其中选择三己基（十四烷基）磷二（三氟甲烷磺酰）酰胺（[P66614][TFSA]）、三己基（十四烷基）全氟辛磺酸磷（[P66614][PFOS]）和三己基（十四烷基）六氟磷酸磷（[P66614][PF6]）作为具有较强co2吸收率的ILs。根据预测结果，在313.15 K和333.15 K下测定了所选磷基IL的co2溶解度。本文采用磁悬浮天平测量了[P66614][TFSA]、[P66614][PFOS]和[P66614][PF6]中甲烷（CH4）、乙烷（C2H6）和乙烯（C2H4）等碳氢化合物在313.15 K和333.15 K下的溶解度。CO2、CH4、C2H6和c2h4的亨利定律常数由摩尔分数<0.1的实验溶解度数据计算得到。利用二氧化碳和碳氢化合物的亨利定律常数之比计算了CO2/碳氢化合物的选择性。IL CO2/ ch4的选择性以阴离子PFOS - < TFSA - < PF6 -的顺序增大，CO2/ c2h6的选择性以阴离子PFOS - < TFSA -≤PF6 -的顺序增大。在313.15 K时，三种IL体系的CO2/ c2h4选择性相同，而在333.15 K时，其选择性依次增大，顺序为PFOS - < TFSA -≤PF6 -。当只改变IL阴离子时，随着阴离子分子量的减小，CO2/烃选择性增加。
In a previous study, a conductor-like screening model for the real solvents (COSMO-RS) method and machine learning were used to predict CO2Henry’s law constants for several ionic liquids (ILs), where trihexyl(tetradecyl)phosphonium bis(trifluoromethanesulfonyl)amide ([P66614][TFSA]), trihexyl(tetradecyl)phosphonium perfluorooctanesulfonate ([P66614][PFOS]), and trihexyl(tetradecyl)phosphonium hexafluorophosphate ([P66614][PF6]) were selected as ILs exhibiting superior CO2absorption. Based on the prediction results, the selected phosphonium-based IL CO2solubilities were measured at 313.15 and 333.15 K. Here, a magnetic suspension balance was used to measure the solubilities of hydrocarbons such as methane (CH4), ethane (C2H6), and ethylene (C2H4) in [P66614][TFSA], [P66614][PFOS], and [P66614][PF6] at 313.15 and 333.15 K. The CO2, CH4, C2H6, and C2H4Henry’s law constants were calculated from the experimental solubility data for mole fractions of <0.1. The CO2/hydrocarbon selectivities were calculated using the ratio of Henry’s law constants of CO2and hydrocarbons. The IL CO2/CH4selectivities increase in the order of the anion PFOS–< TFSA–< PF6–, whereas CO2/C2H6selectivities increase in the order of the anion PFOS–< TFSA–≤ PF6–. The CO2/C2H4selectivities of the three IL systems were identical at 313.15 K, whereas at 333.15 K, the selectivities increased in the order PFOS–< TFSA–≤ PF6–. When only the IL anions were changed, the CO2/hydrocarbon selectivity increased with a decreasing anion molecular weight.
影响因子：
4.4
作者：
NANDA, VS;SIMHA, R
通讯作者：
SIMHA, R
甲烷 (CH4) 和乙烷 (C2H6) 在混合聚乙二醇二甲醚 (Genosorb 1753) 中的高压溶解度及其在天然气脱硫操作中的选择性
影响因子：
--
作者：
Aravind V. Rayer;A. Henni;P. Tontiwachwuthikul
通讯作者：
P. Tontiwachwuthikul
建立统计热力学数据库寻找具有气体选择性的新型离子液体
DOI：
10.2477/jccj.2019-0046
发表时间：
2019
期刊：
Journal of Computer Chemistry, Japan
影响因子：
--
作者：
Chika Masuda;Nahoko Kuroki
通讯作者：
Nahoko Kuroki