Density, viscosity, physical solubility and diffusivity of CO 2 in aqueous MDEA+[bmim][BF 4] solutions from 303 to 333K

Afshin Ahmady; Mohd Ali Hashim; Mohamed Kheireddine Aroua

doi:10.1016/j.cej.2011.06.059

Density, viscosity, physical solubility and diffusivity of CO ₂ in aqueous MDEA+[bmim][BF ₄] solutions from 303 to 333K

Afshin Ahmady^*
, Mohd Ali Hashim
, Mohamed Kheireddine Aroua

^*Corresponding author for this work

Department of Chemical Engineering

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

60 Scopus citations

Abstract

In this study, the physical solubility and diffusivity of N ₂O in aqueous MDEA+[bmim][BF ₄] solutions were measured over a range of temperatures of 303-333K and [bmim][BF ₄] concentrations of 0-2.0molL ^-1 at atmospheric pressure. The total MDEA concentration in the solutions was kept constant at 4molL ^-1. The " N ₂O analogy" was then used to estimate the physical solubility and diffusivity of CO ₂ in aqueous MDEA+[bmim][BF ₄] solutions. The density and viscosity of aqueous MDEA+[bmim][BF ₄] solutions were also measured over the same range of temperatures and concentrations of the ionic liquid. These data were used to develop correlations for the prediction of CO ₂ diffusivity in these systems.

Original language	English
Pages (from-to)	763-770
Number of pages	8
Journal	Chemical Engineering Journal
Volume	172
Issue number	2-3
DOIs	https://doi.org/10.1016/j.cej.2011.06.059
State	Published - 15 Aug 2011

Keywords

Carbon dioxide
Diffusivity
Ionic liquids
MDEA
Physical solubility

ASJC Scopus subject areas

General Chemistry
Environmental Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

Access to Document

10.1016/j.cej.2011.06.059

Cite this

@article{d12a553f5f734f948c5bd7b1406b5dbd,

title = "Density, viscosity, physical solubility and diffusivity of CO 2 in aqueous MDEA+[bmim][BF 4] solutions from 303 to 333K",

abstract = "In this study, the physical solubility and diffusivity of N 2O in aqueous MDEA+[bmim][BF 4] solutions were measured over a range of temperatures of 303-333K and [bmim][BF 4] concentrations of 0-2.0molL -1 at atmospheric pressure. The total MDEA concentration in the solutions was kept constant at 4molL -1. The {"} N 2O analogy{"} was then used to estimate the physical solubility and diffusivity of CO 2 in aqueous MDEA+[bmim][BF 4] solutions. The density and viscosity of aqueous MDEA+[bmim][BF 4] solutions were also measured over the same range of temperatures and concentrations of the ionic liquid. These data were used to develop correlations for the prediction of CO 2 diffusivity in these systems.",

keywords = "Carbon dioxide, Diffusivity, Ionic liquids, MDEA, Physical solubility",

author = "Afshin Ahmady and Hashim, \{Mohd Ali\} and Aroua, \{Mohamed Kheireddine\}",

year = "2011",

month = aug,

day = "15",

doi = "10.1016/j.cej.2011.06.059",

language = "English",

volume = "172",

pages = "763--770",

journal = "Chemical Engineering Journal",

issn = "1385-8947",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Density, viscosity, physical solubility and diffusivity of CO 2 in aqueous MDEA+[bmim][BF 4] solutions from 303 to 333K

AU - Ahmady, Afshin

AU - Hashim, Mohd Ali

AU - Aroua, Mohamed Kheireddine

PY - 2011/8/15

Y1 - 2011/8/15

N2 - In this study, the physical solubility and diffusivity of N 2O in aqueous MDEA+[bmim][BF 4] solutions were measured over a range of temperatures of 303-333K and [bmim][BF 4] concentrations of 0-2.0molL -1 at atmospheric pressure. The total MDEA concentration in the solutions was kept constant at 4molL -1. The " N 2O analogy" was then used to estimate the physical solubility and diffusivity of CO 2 in aqueous MDEA+[bmim][BF 4] solutions. The density and viscosity of aqueous MDEA+[bmim][BF 4] solutions were also measured over the same range of temperatures and concentrations of the ionic liquid. These data were used to develop correlations for the prediction of CO 2 diffusivity in these systems.

AB - In this study, the physical solubility and diffusivity of N 2O in aqueous MDEA+[bmim][BF 4] solutions were measured over a range of temperatures of 303-333K and [bmim][BF 4] concentrations of 0-2.0molL -1 at atmospheric pressure. The total MDEA concentration in the solutions was kept constant at 4molL -1. The " N 2O analogy" was then used to estimate the physical solubility and diffusivity of CO 2 in aqueous MDEA+[bmim][BF 4] solutions. The density and viscosity of aqueous MDEA+[bmim][BF 4] solutions were also measured over the same range of temperatures and concentrations of the ionic liquid. These data were used to develop correlations for the prediction of CO 2 diffusivity in these systems.

KW - Carbon dioxide

KW - Diffusivity

KW - Ionic liquids

KW - MDEA

KW - Physical solubility

UR - https://www.scopus.com/pages/publications/84860400710

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DO - 10.1016/j.cej.2011.06.059

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