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.

引用

页码：1157 / 1163

页数：7

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