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A Thermodynamic Study of Aqueous 1-Allyl-3-Methylimidazolium Formate Ionic Liquid as a Tailored Sorbent for Carbon Dioxide Separation
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.
Chemical-Biological Centre, Technical Chemistry, Department of Chemistry, Umeå University.
Chemical-Biological Centre, Technical Chemistry, Department of Chemistry, Umeå University.
Technical Chemistry, Department of Chemistry, Chemical-Biological Centre, Umeå University.
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Number of Authors: 5
2017 (English)In: Energy Technology, ISSN 2194-4288, Vol. 5, no 8, 1464-1471 p.Article in journal (Refereed) Published
Abstract [en]

In this work, aqueous 1-allyl-3-methylimidazolium formate ([Amim][HCOO]) was studied as a potential sorbent for CO2 separation. The density and viscosity of aqueous [Amim][HCOO] were measured at temperatures ranging from 293.15 to 333.15 K at atmospheric pressure. The solubility of CO2 and CH4 in dry [Amim][HCOO] as well as the CO2 solubility in aqueous [Amim][HCOO] were measured at pressures up to 1.8 MPa and temperatures of 298.2, 313.2, and 333.2 K. The results showed that the density and viscosity of aqueous [Amim][HCOO] as well as the CO2 solubility in aqueous [Amim][HCOO] decreased upon increasing the water concentration and temperature. The viscosity was very sensitive to the water concentration. The experimental density and viscosity of aqueous [Amim][HCOO] were fitted to semiempirical equations, and the excess molar volume and viscosity deviations were calculated to investigate the interaction between the [Amim][HCOO] ionic liquid and water. The experimental vapor–liquid equilibrium was represented with the nonrandom two-liquid and Redlich–Kwong model. The model parameters can be further implemented into Aspen Plus software to conduct process simulations.

Place, publisher, year, edition, pages
2017. Vol. 5, no 8, 1464-1471 p.
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-62655DOI: 10.1002/ente.201600742Scopus ID: 2-s2.0-85017121238OAI: oai:DiVA.org:ltu-62655DiVA: diva2:1084269
Note

Validerad;2017;Nivå 2;2017-08-16 (inah)

Available from: 2017-03-24 Created: 2017-03-24 Last updated: 2017-08-17Bibliographically approved

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CiteExportLink to record
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