CO₂ removal with 'switchable' versus 'classical' ionic liquids

E. Privalova; Maristiina Nurmi; MS Marañón; Elena Murzina; Päivi Mäki-Arvela; Kari Eränen; Dmitry Murzin; Jyri-Pekka Mikkola

doi:10.1016/j.seppur.2012.01.047

CO₂ removal with 'switchable' versus 'classical' ionic liquids

E. Privalova, Maristiina Nurmi, MS Marañón, Elena Murzina, Päivi Mäki-Arvela, Kari Eränen, Dmitry Murzin, Jyri-Pekka Mikkola

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

47 Citations (Scopus)

Abstract

Switchable ionic liquids (SILs) are promising solvents for CO2 separation due to their high CO2 capturing efficiency and easy preparation compared to 'classical' ionic liquids. Considering viscosity, the present study has demonstrated that SILs formed at least two times stronger chemical bonds with CO2 than studied classical ionic liquids (ILs). Furthermore, the reversible properties of SILs were confirmed by evaluation of different regeneration methods. On average, molar fractions of CO2 were more than 0.3 outperforming acetate-based ILs (molar fraction of CO2 around 0.25) and more than ten times the capacity of physical ionic liquids (molar fraction 0.02). Consequently, SILs are found to be efficient CO2 absorbents operating at atmospheric pressure.

Original language	Undefined/Unknown
Pages (from-to)	42–50
Number of pages	9
Journal	Separation and Purification Technology
Volume	97
DOIs	https://doi.org/10.1016/j.seppur.2012.01.047
Publication status	Published - 2012
MoE publication type	A1 Journal article-refereed

Keywords

CO2 capture
Viscosity
Ionic liquids
Regeneration
Switchable solvents

Access to Document

10.1016/j.seppur.2012.01.047

Cite this

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title = "CO₂ removal with 'switchable' versus 'classical' ionic liquids",

abstract = "Switchable ionic liquids (SILs) are promising solvents for CO2 separation due to their high CO2 capturing efficiency and easy preparation compared to 'classical' ionic liquids. Considering viscosity, the present study has demonstrated that SILs formed at least two times stronger chemical bonds with CO2 than studied classical ionic liquids (ILs). Furthermore, the reversible properties of SILs were confirmed by evaluation of different regeneration methods. On average, molar fractions of CO2 were more than 0.3 outperforming acetate-based ILs (molar fraction of CO2 around 0.25) and more than ten times the capacity of physical ionic liquids (molar fraction 0.02). Consequently, SILs are found to be efficient CO2 absorbents operating at atmospheric pressure.",

keywords = "CO2 capture, Viscosity, Ionic liquids, Regeneration, Switchable solvents, CO2 capture, Viscosity, Ionic liquids, Regeneration, Switchable solvents, CO2 capture, Viscosity, Ionic liquids, Regeneration, Switchable solvents",

author = "E. Privalova and Maristiina Nurmi and MS Mara{\~n}{\'o}n and Elena Murzina and P{\"a}ivi M{\"a}ki-Arvela and Kari Er{\"a}nen and Dmitry Murzin and Jyri-Pekka Mikkola",

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doi = "10.1016/j.seppur.2012.01.047",

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journal = "Separation and Purification Technology",

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T1 - CO₂ removal with 'switchable' versus 'classical' ionic liquids

AU - Privalova, E.

AU - Nurmi, Maristiina

AU - Marañón, MS

AU - Murzina, Elena

AU - Mäki-Arvela, Päivi

AU - Eränen, Kari

AU - Murzin, Dmitry

AU - Mikkola, Jyri-Pekka

PY - 2012

Y1 - 2012

N2 - Switchable ionic liquids (SILs) are promising solvents for CO2 separation due to their high CO2 capturing efficiency and easy preparation compared to 'classical' ionic liquids. Considering viscosity, the present study has demonstrated that SILs formed at least two times stronger chemical bonds with CO2 than studied classical ionic liquids (ILs). Furthermore, the reversible properties of SILs were confirmed by evaluation of different regeneration methods. On average, molar fractions of CO2 were more than 0.3 outperforming acetate-based ILs (molar fraction of CO2 around 0.25) and more than ten times the capacity of physical ionic liquids (molar fraction 0.02). Consequently, SILs are found to be efficient CO2 absorbents operating at atmospheric pressure.

AB - Switchable ionic liquids (SILs) are promising solvents for CO2 separation due to their high CO2 capturing efficiency and easy preparation compared to 'classical' ionic liquids. Considering viscosity, the present study has demonstrated that SILs formed at least two times stronger chemical bonds with CO2 than studied classical ionic liquids (ILs). Furthermore, the reversible properties of SILs were confirmed by evaluation of different regeneration methods. On average, molar fractions of CO2 were more than 0.3 outperforming acetate-based ILs (molar fraction of CO2 around 0.25) and more than ten times the capacity of physical ionic liquids (molar fraction 0.02). Consequently, SILs are found to be efficient CO2 absorbents operating at atmospheric pressure.

KW - CO2 capture

KW - Viscosity

KW - Ionic liquids

KW - Regeneration

KW - Switchable solvents

KW - CO2 capture

KW - Viscosity

KW - Ionic liquids

KW - Regeneration

KW - Switchable solvents

KW - CO2 capture

KW - Viscosity

KW - Ionic liquids

KW - Regeneration

KW - Switchable solvents

U2 - 10.1016/j.seppur.2012.01.047

DO - 10.1016/j.seppur.2012.01.047

M3 - Artikel

SN - 1383-5866

VL - 97

SP - 42

EP - 50

JO - Separation and Purification Technology

JF - Separation and Purification Technology

ER -