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Screening ionic liquids for developing advanced immobilization technology for CO2 separation
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science. State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, China.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science. State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, China.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science. State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, China.ORCID iD: 0000-0002-3201-8323
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science. State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, China.ORCID iD: 0000-0002-5633-4312
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2022 (English)In: Frontiers in Chemistry, E-ISSN 2296-2646, Vol. 10, article id 941352Article in journal (Refereed) Published
Abstract [en]

Developing immobilized-ionic liquids (ILs) sorbents is important for CO2 separation, and prior theoretically screening ILs is desirable considering the huge number of ILs. In this study, the compressibility of ILs was proposed as a new and additional index for screening ILs, and the developed predictive theoretical model, i.e., electrolyte perturbed-chain statistical associating fluid theory, was used to predict the properties for a wide variety of ILs in a wide temperature and pressure range to provide systematic data. In screening, firstly, the isothermal compressibilities of 272 ILs were predicted at pressures ranging from 1 to 6,000 bar and temperatures ranging from 298.15 to 323.15 K, and then 30 ILs were initially screened. Subsequently, the CO2 absorption capacities in these 30 ILs at temperatures from 298.15 to 323.15 K and pressures up to 50 bar were predicted, and 7 ILs were identified. In addition, the CO2 desorption enthalpies in these 7 ILs were estimated for further consideration. The performance of one of the screened ILs was verified with the data determined experimentally, evidencing that the screen is reasonable, and the consideration of IL-compressibility is essential when screening ILs for the immobilized-IL sorbents.

Place, publisher, year, edition, pages
Frontiers Media S.A., 2022. Vol. 10, article id 941352
Keywords [en]
CO2 separation, ePC-SAFT, ionic liquids, immobilization, compressibility
National Category
Other Environmental Engineering
Research subject
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-92368DOI: 10.3389/fchem.2022.941352ISI: 000831815200001PubMedID: 35903192Scopus ID: 2-s2.0-85134994382OAI: oai:DiVA.org:ltu-92368DiVA, id: diva2:1686225
Funder
The Kempe Foundations, SMK21-0020Swedish Energy Agency
Note

Validerad;2022;Nivå 2;2022-08-23 (hanlid);

Funder: National Natural ScienceFoundation of China (21838004, 22108115); Joint Research Fund for Overseas Chinese Scholars and Scholars in Hong Kong and Macao Young Scholars (21729601); Postgraduate Research and Practice Innovation Program of Jiangsu Province (KYCX21_1180); China Postdoctoral Science Foundation funded project (2021M691554)

Available from: 2022-08-09 Created: 2022-08-09 Last updated: 2022-11-30Bibliographically approved

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Chen, YifengSun, YunhaoZuo, ZhidaJi, Xiaoyan

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