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Ether Functionalized Choline Tethered Amino Acid Ionic Liquids for Enhanced CO2 Capture
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering.ORCID iD: 0000-0002-6295-4112
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering.ORCID iD: 0000-0003-3652-7798
Number of Authors: 22016 (English)In: A C S Sustainable Chemistry & Engineering, ISSN 2168-0485, Vol. 4, no 10, p. 5441-5449Article in journal (Refereed) Published
Abstract [en]

Amino acid ionic liquids (ILs) are the most interesting and effective for CO2 capture due to their low toxicity, biodegradability and fast reactivity towards CO2. Ionic nature of amino acid ILs can raise an environmental issue if the cation counterpart becomes toxic to the aquatic ecosystems and can become potential atmospheric pollutant. In this regard, choline based ILs are known to be promising scaffolds for the development of less toxic amino acid ILs. However, the existing choline amino acid ILs are highly viscous limiting their applicability as solvents. Ether functionalized choline based amino acid ILs with novel series of less toxic green ILs were explored with reduced viscosity and high CO2 capture capacity. A simple, economic, clean and environmentally benign method was utilized for the synthesis of novel choline based amino acid ILs using a commercially available and economical starting material 2-(dimethylamino)ethanol (deanol, a human dietary food supplement). Reported ILs have low viscosity with high CO2 capture capacity (1.62 mol of CO2 /mol of IL, 4.31 mol of CO2/kg of IL, 19.02 wt.% of CO2). Mechanism of [N1,1,6,2O4][Lys]+CO2 reaction and adduct structure was proposed by means of DFT and NMR.

Place, publisher, year, edition, pages
2016. Vol. 4, no 10, p. 5441-5449
National Category
Physical Chemistry
Research subject
Chemistry of Interfaces
Identifiers
URN: urn:nbn:se:ltu:diva-10925DOI: 10.1021/acssuschemeng.6b00824ISI: 000384791500035Scopus ID: 2-s2.0-84990208646Local ID: 9d2c4905-a77e-43c4-b70b-84fdcf6b5bd7OAI: oai:DiVA.org:ltu-10925DiVA, id: diva2:983873
Note

Validerad; 2016; Nivå 2; 2016-11-02 (andbra)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Bhattacharyya, ShubhankarShah, Faiz Ullah

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