Carbon dioxide capture by aqueous ionic liquid solutions

Jairton Dupont; Nathalia M. Simon; Marcileia Zanatta; Francisco P. Dos Santos; Marta C. Corvo; Eurico J. Cabrita

doi:10.1002/cssc.201701044

Carbon dioxide capture by aqueous ionic liquid solutions

Jairton Dupont, Nathalia M. Simon, Marcileia Zanatta, Francisco P. Dos Santos, Marta C. Corvo, Eurico J. Cabrita

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Abstract

Confined water in aqueous solutions of imidazolium-based ionic liquids (ILs) associated with acetate and imidazolate anions react reversibly with CO2 to yield bicarbonate. Three types of CO2 sorption in these "IL aqueous solutions" were observed: physical, CO2-imidazolium adduct generation, and bicarbonate formation (up to 1.9mol(bicarbonate) mol(-1) of IL), resulting in a 10:1 (molar ratio) total absorption of CO2 relative to imidazolate anions in the presence of water 1:1000 (IL/water). These sorption values are higher than the classical alkanol amines or even alkaline aqueous solutions under similar experimental conditions.

Original language	English
Pages (from-to)	4927-4933
Number of pages	7
Journal	ChemSusChem
Volume	10
Issue number	24
DOIs	https://doi.org/10.1002/cssc.201701044
Publication status	Published - 22 Dec 2017

Keywords

bicarbonate species
carbon dioxide capture
confined water
ionic liquids
nuclear magnetic resonance

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title = "Carbon dioxide capture by aqueous ionic liquid solutions",

abstract = "Confined water in aqueous solutions of imidazolium-based ionic liquids (ILs) associated with acetate and imidazolate anions react reversibly with CO2 to yield bicarbonate. Three types of CO2 sorption in these {"}IL aqueous solutions{"} were observed: physical, CO2-imidazolium adduct generation, and bicarbonate formation (up to 1.9mol(bicarbonate) mol(-1) of IL), resulting in a 10:1 (molar ratio) total absorption of CO2 relative to imidazolate anions in the presence of water 1:1000 (IL/water). These sorption values are higher than the classical alkanol amines or even alkaline aqueous solutions under similar experimental conditions.",

keywords = "bicarbonate species, carbon dioxide capture, confined water, ionic liquids, nuclear magnetic resonance",

author = "Jairton Dupont and Simon, {Nathalia M.} and Marcileia Zanatta and {Dos Santos}, {Francisco P.} and Corvo, {Marta C.} and Cabrita, {Eurico J.}",

note = "Sem PDF. FAPESP - 2015/08541-6 ; FCT (RNRMN) - PTDC/QUI/64744/2006 ; RECI/BBB-BQB/0230/2012 ",

year = "2017",

month = dec,

day = "22",

doi = "10.1002/cssc.201701044",

language = "English",

volume = "10",

pages = "4927--4933",

journal = "ChemSusChem",

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publisher = "Wiley | Wiley-VCH Verlag",

number = "24",

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TY - JOUR

T1 - Carbon dioxide capture by aqueous ionic liquid solutions

AU - Dupont, Jairton

AU - Simon, Nathalia M.

AU - Zanatta, Marcileia

AU - Dos Santos, Francisco P.

AU - Corvo, Marta C.

AU - Cabrita, Eurico J.

N1 - Sem PDF. FAPESP - 2015/08541-6 ; FCT (RNRMN) - PTDC/QUI/64744/2006 ; RECI/BBB-BQB/0230/2012

PY - 2017/12/22

Y1 - 2017/12/22

N2 - Confined water in aqueous solutions of imidazolium-based ionic liquids (ILs) associated with acetate and imidazolate anions react reversibly with CO2 to yield bicarbonate. Three types of CO2 sorption in these "IL aqueous solutions" were observed: physical, CO2-imidazolium adduct generation, and bicarbonate formation (up to 1.9mol(bicarbonate) mol(-1) of IL), resulting in a 10:1 (molar ratio) total absorption of CO2 relative to imidazolate anions in the presence of water 1:1000 (IL/water). These sorption values are higher than the classical alkanol amines or even alkaline aqueous solutions under similar experimental conditions.

AB - Confined water in aqueous solutions of imidazolium-based ionic liquids (ILs) associated with acetate and imidazolate anions react reversibly with CO2 to yield bicarbonate. Three types of CO2 sorption in these "IL aqueous solutions" were observed: physical, CO2-imidazolium adduct generation, and bicarbonate formation (up to 1.9mol(bicarbonate) mol(-1) of IL), resulting in a 10:1 (molar ratio) total absorption of CO2 relative to imidazolate anions in the presence of water 1:1000 (IL/water). These sorption values are higher than the classical alkanol amines or even alkaline aqueous solutions under similar experimental conditions.

KW - bicarbonate species

KW - carbon dioxide capture

KW - confined water

KW - ionic liquids

KW - nuclear magnetic resonance

U2 - 10.1002/cssc.201701044

DO - 10.1002/cssc.201701044

M3 - Article

C2 - 28742268

VL - 10

SP - 4927

EP - 4933

JO - ChemSusChem

JF - ChemSusChem

SN - 1864-5631

IS - 24

ER -

Carbon dioxide capture by aqueous ionic liquid solutions

Abstract

Keywords

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