Solubility of CO2 and CH4 in Protic Amidium Bis (trifluoromethanesulfonyl)amide Ionic Liquids at 313.15 K

被引：4
|
作者：
Watanabe, Masaki [1 ]
Takahashi, Kota [1 ]
Kodama, Daisuke [1 ]
Makino, Takashi [2 ]
Kanakubo, Mitsuhiro [2 ]
Peters, Cornelis J. [3 ]
机构：
[1] Nihon Univ, Dept Chem Biol & Appl Chem, Coll Engn, Koriyama, Fukushima 9638642, Japan
[2] Natl Inst Adv Ind Sci & Technol, Res Inst Chem Proc Technol, Sendai, Miyagi 9838551, Japan
[3] Colorado Sch Mines, Ctr Hydrate Res, Dept Chem & Biol Engn, Golden, CO 80401 USA
来源：
JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2022年 / 67卷 / 05期
关键词：
PRESSURE PHASE-BEHAVIOR; CARBON-DIOXIDE; GAS; VISCOSITY; DENSITY; EQUILIBRIA; METHANE; STATE; TEMPERATURE; SELECTIVITY;
D O I：
10.1021/acs.jced.1c00928
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this study, we investigated the CO2/CH4selectivity of protic amidium ionic liquids (ILs) comprisingbis(trifluoromethanesulfonyl)amide,N,N-dimethylformamidium([DMFH][TFSA]),N,N-dimethylacetamidium ([DMAH]-[TFSA]), andN,N-dimethylpropionamidium ([DMPH][TFSA]).CO2solubility was measured at a temperature of 313.15 K andpressures up to 8.3 MPa using a static circulation-type apparatus,whereas CH4solubility was measured at a temperature of 313.15 Kand pressures up to 8.0 MPa using a magnetic suspension balance.The CO2and CH4solubility in the ILs exhibited typical pressuredependence as observed for physical absorbents. [DMFH][TFSA]exhibited a higher CO2solubility and a lower CH4solubility than[DMAH][TFSA] and [DMPH][TFSA]. CO2/CH4selectivity was derived from the experimental solubility data. The proticamidium ILs presented herein exhibited higher CO2/CH4selectivity than conventional physical absorbents such as Selexol and Rectisol.
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收藏
页码：1157 / 1163
页数：7
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