High-Pressure Vapor-Liquid Equilibria of 1-Alkyl-1-Methylpyrrolidinium Bis(trifluoromethylsulfonyl)imide Ionic Liquids and CO2

Tugba Turnaoglu; David L. Minnick; Ana Rita C. Morais; Donna L. Baek; Robert V. Fox; Aaron M. Scurto; Mark B. Shiflett

doi:10.1021/acs.jced.8b01236

High-Pressure Vapor-Liquid Equilibria of 1-Alkyl-1-Methylpyrrolidinium Bis(trifluoromethylsulfonyl)imide Ionic Liquids and CO₂

Tugba Turnaoglu, David L. Minnick, Ana Rita C. Morais, Donna L. Baek, Robert V. Fox, Aaron M. Scurto, Mark B. Shiflett

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

The high-pressure vapor-liquid equilibrium for the binary systems of carbon dioxide (CO₂) and a series of 1-alkyl-1-methyl pyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquids ([C_nC₁pyr][NTf₂] (n = 3,4,6)) are reported at 298.15, 318.15, and 338.15 K and at pressures of up to 20 MPa. Experiments were conducted using gravimetric (IGA and XEMIS microbalances) and volumetric (high-pressure view cell) methods. The solubility of CO₂ in pyrrolidinium ionic liquids increases with decreasing temperature and increasing pressure. The CO₂ solubility also slightly increases with increases in alkyl chain length on the pyrrolidinium cation. The molar volume and volume expansion of CO₂ + IL mixtures are also reported. The Fickian diffusion of CO₂ in pyrrolidinium-based ionic liquids (10^-10 m²·s^-1) was calculated at pressures of up to 2 MPa and found to be slightly lower than the diffusivity of CO₂ in an imidazolium-based ionic liquid with the [NTf₂] anion.

Original language	English
Pages (from-to)	4668-4678
Number of pages	11
Journal	Journal of Chemical and Engineering Data
Volume	64
Issue number	11
DOIs	https://doi.org/10.1021/acs.jced.8b01236
State	Published - Nov 14 2019
Externally published	Yes

Funding

The authors gratefully acknowledge financial support through the INL Laboratory Directed Research & Development (LDRD) Program under DOE Idaho Operations Office contract DE-AC07-05ID14517. The authors also thank Hiden Isochema for technical support with the IGA and XEMIS gravimetric microbalances and Scott Ramskill for technical support with the high-pressure view cell apparatus.

Funders	Funder number
DOE Idaho Operations Office	DE-AC07-05ID14517
Laboratory Directed Research and Development

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10.1021/acs.jced.8b01236

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title = "High-Pressure Vapor-Liquid Equilibria of 1-Alkyl-1-Methylpyrrolidinium Bis(trifluoromethylsulfonyl)imide Ionic Liquids and CO2 ",

abstract = "The high-pressure vapor-liquid equilibrium for the binary systems of carbon dioxide (CO2) and a series of 1-alkyl-1-methyl pyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquids ([CnC1pyr][NTf2] (n = 3,4,6)) are reported at 298.15, 318.15, and 338.15 K and at pressures of up to 20 MPa. Experiments were conducted using gravimetric (IGA and XEMIS microbalances) and volumetric (high-pressure view cell) methods. The solubility of CO2 in pyrrolidinium ionic liquids increases with decreasing temperature and increasing pressure. The CO2 solubility also slightly increases with increases in alkyl chain length on the pyrrolidinium cation. The molar volume and volume expansion of CO2 + IL mixtures are also reported. The Fickian diffusion of CO2 in pyrrolidinium-based ionic liquids (10-10 m2·s-1) was calculated at pressures of up to 2 MPa and found to be slightly lower than the diffusivity of CO2 in an imidazolium-based ionic liquid with the [NTf2] anion.",

author = "Tugba Turnaoglu and Minnick, {David L.} and Morais, {Ana Rita C.} and Baek, {Donna L.} and Fox, {Robert V.} and Scurto, {Aaron M.} and Shiflett, {Mark B.}",

note = "Publisher Copyright: Copyright {\textcopyright} 2019 American Chemical Society.",

year = "2019",

month = nov,

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doi = "10.1021/acs.jced.8b01236",

language = "English",

volume = "64",

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High-Pressure Vapor-Liquid Equilibria of 1-Alkyl-1-Methylpyrrolidinium Bis(trifluoromethylsulfonyl)imide Ionic Liquids and CO₂ . / Turnaoglu, Tugba; Minnick, David L.; Morais, Ana Rita C. et al.
In: Journal of Chemical and Engineering Data, Vol. 64, No. 11, 14.11.2019, p. 4668-4678.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - High-Pressure Vapor-Liquid Equilibria of 1-Alkyl-1-Methylpyrrolidinium Bis(trifluoromethylsulfonyl)imide Ionic Liquids and CO2

AU - Turnaoglu, Tugba

AU - Minnick, David L.

AU - Morais, Ana Rita C.

AU - Baek, Donna L.

AU - Fox, Robert V.

AU - Scurto, Aaron M.

AU - Shiflett, Mark B.

PY - 2019/11/14

Y1 - 2019/11/14

N2 - The high-pressure vapor-liquid equilibrium for the binary systems of carbon dioxide (CO2) and a series of 1-alkyl-1-methyl pyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquids ([CnC1pyr][NTf2] (n = 3,4,6)) are reported at 298.15, 318.15, and 338.15 K and at pressures of up to 20 MPa. Experiments were conducted using gravimetric (IGA and XEMIS microbalances) and volumetric (high-pressure view cell) methods. The solubility of CO2 in pyrrolidinium ionic liquids increases with decreasing temperature and increasing pressure. The CO2 solubility also slightly increases with increases in alkyl chain length on the pyrrolidinium cation. The molar volume and volume expansion of CO2 + IL mixtures are also reported. The Fickian diffusion of CO2 in pyrrolidinium-based ionic liquids (10-10 m2·s-1) was calculated at pressures of up to 2 MPa and found to be slightly lower than the diffusivity of CO2 in an imidazolium-based ionic liquid with the [NTf2] anion.

AB - The high-pressure vapor-liquid equilibrium for the binary systems of carbon dioxide (CO2) and a series of 1-alkyl-1-methyl pyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquids ([CnC1pyr][NTf2] (n = 3,4,6)) are reported at 298.15, 318.15, and 338.15 K and at pressures of up to 20 MPa. Experiments were conducted using gravimetric (IGA and XEMIS microbalances) and volumetric (high-pressure view cell) methods. The solubility of CO2 in pyrrolidinium ionic liquids increases with decreasing temperature and increasing pressure. The CO2 solubility also slightly increases with increases in alkyl chain length on the pyrrolidinium cation. The molar volume and volume expansion of CO2 + IL mixtures are also reported. The Fickian diffusion of CO2 in pyrrolidinium-based ionic liquids (10-10 m2·s-1) was calculated at pressures of up to 2 MPa and found to be slightly lower than the diffusivity of CO2 in an imidazolium-based ionic liquid with the [NTf2] anion.

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High-Pressure Vapor-Liquid Equilibria of 1-Alkyl-1-Methylpyrrolidinium Bis(trifluoromethylsulfonyl)imide Ionic Liquids and CO₂

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