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CO2 separation using a hybrid choline-2-pyrrolidine-carboxylic acid/polyethylene glycol/water absorbent
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Energivetenskap.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Energivetenskap. Key Laboratory of Material and Chemical Engineering, Nanjing Tech University, Nanjing, China.
Key Laboratory of Material and Chemical Engineering, Nanjing Tech University, Nanjing, China.
Key Laboratory of Material and Chemical Engineering, Nanjing Tech University, Nanjing, China.
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2020 (Engelska)Ingår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 257, artikel-id 113962Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Developing novel hybrid absorbents is essential for CO2 separation. In this study, the density and viscosity of a hybrid absorbent (choline-2-pyrrolidine-carboxylic acid/polyethylene glycol/water ([Cho][Pro]/PEG200/H2O)) were measured experimentally, and its CO2 solubility was also determined. The excess mole volume and excess Gibbs energy of activation of the hybrid absorbent were further estimated to understand the molecular structure and interactions between [Cho][Pro]/PEG200 and H2O. The CO2 solubilities in [Cho][Pro]/PEG200 and [Cho][Pro]/H2O were analyzed and described using the Redlich–Kwong non-random-two-liquid (RK-NRTL) model. Furthermore, the CO2 solubility in the hybrid absorbent was predicted using the RK-NRTL model and was compared with the new experimental results for verification. The effect of H2O on the CO2 absorption performance was further analyzed. The performance and cost of the hybrid absorbent were compared with those of other commercialized CO2 absorbents. In addition, the recyclability of the hybrid absorbent for CO2 separation was studied. The results of this study indicated that the hybrid absorbent could be promising for CO2 separation.

Ort, förlag, år, upplaga, sidor
Elsevier, 2020. Vol. 257, artikel-id 113962
Nyckelord [en]
Ionic liquid, Carbon dioxide, Property, Solubility, Modeling
Nationell ämneskategori
Energiteknik
Forskningsämne
Energiteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-76484DOI: 10.1016/j.apenergy.2019.113962Scopus ID: 2-s2.0-85073480738OAI: oai:DiVA.org:ltu-76484DiVA, id: diva2:1365048
Anmärkning

Validerad;2019;Nivå 2;2019-10-23 (johcin)

Tillgänglig från: 2019-10-23 Skapad: 2019-10-23 Senast uppdaterad: 2019-10-29Bibliografiskt granskad

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Chen, YifengSun, YunhaoJi, Xiaoyan

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Chen, YifengSun, YunhaoJi, Xiaoyan
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