Thermophysical properties and C02 solubility in ionic liquids. N-Methyldiethanolamine and their binary mixtures
Incorporating the advantage of both ILs and amines for the development of hybrid solvent to capture C02 is drawing great attention. Therefore in the present work a fundamental and systematic investigation on the potential application of hybrid mixtures (comprising of ILs + amine) for C02 removal...
| Main Author: | MAJEED AKBAR, MAJID |
|---|---|
| Format: | Thesis |
| Language: | English |
| Institution: | Universiti Teknologi Petronas |
| Record Id / ISBN-0: | utp-utpedia.22404 / |
| Published: |
2013
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| Subjects: | |
| Online Access: |
http://utpedia.utp.edu.my/22404/1/2013%20-CHEMICAL%20-%20THERMOPHYSICAL%20PROPERTIES%20OF%20CO2%20SULUBILITY%20IN%20IONIC%20LIQUIDS%2C%20N-METHYLDIETHANOLAMINE%20%26%20THEIR%20BINARY%20MIXTURES%20-%20MAJID%20MAJEED%20AKBAR.pdf http://utpedia.utp.edu.my/22404/ |
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| Summary: |
Incorporating the advantage of both ILs and amines for the development of hybrid
solvent to capture C02 is drawing great attention. Therefore in the present work a
fundamental and systematic investigation on the potential application of hybrid
mixtures (comprising of ILs + amine) for C02 removal has been presented. The
binary mixtures of three imidazolium based ILs namely; 1-hexyl-3-
methylimidazolium tetrafluoroborate ([hmim][BF 4]). 1-hexyl-3-methylimidazolium
bis(trifluoromethylsulfonyl)imide ([hmim] [Tf2N]). 1-hexy 1-3-methy limidazolium
tris(pentafluoroethyl)trifluorophosphate ([hmim] [F AP]) with N-methyldiethanolamine
(MDEA) were prepared and the C02 solubility was measured in the pure solvents as
well as in the binary mixtures at three different temperatures (298.15, 313.15, 323.15)
K and at eight different pressures (:S 3000 kPa). Prior to C02 solubility the basic
thermophysical properties namely; density (p), viscosity (1)), refractive index (no) and
thermal stability (TGA) of the pure solvents as well as for the binary mixtures were
measured over a wide range of temperatures (298.15 to 323.15 for p, 1), no and 303.15
to I 073.15 for TGA) and concentrations (for binary mixtures). The excess properties
for the binary mixtures namely; excess molar volumes, viscosity and refractive index
deviation were deduced from the measured physical properties data. The effects of
pressures. temperatures, concentrations, and anions on C02 solubility were studied in
detail. The temperature depended parameters of solubility namely; Henry's constants,
Enthalpy, Entropy were also deduced. The experimental C02 solubility results were
modelled with the help of Peng-Robinson and Soave-Redlich Kwong equations of
states (EOS) with Vander Waals (VdW) and Mathias-Klotz-Prausnitz (MK) mixing
rules. The pure liquids and the selected binary mixtures which were once used for
C02 solubility were regenerated and used again to investigate their potential
applicability for recycling purpose. |
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