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dc.contributor.authorPerinu, Cristina
dc.contributor.authorBernhardsen, Ida
dc.contributor.authorPinto, Diego Di Domenico
dc.contributor.authorKnuutila, Hanna K
dc.contributor.authorJens, Klaus-Joachim
dc.date.accessioned2020-01-30T13:27:18Z
dc.date.available2020-01-30T13:27:18Z
dc.date.created2019-08-22T14:24:01Z
dc.date.issued2019
dc.identifier.citationIndustrial & Engineering Chemistry Research. 2019, 58 (23), 9781-9794.nb_NO
dc.identifier.issn0888-5885
dc.identifier.urihttp://hdl.handle.net/11250/2638918
dc.description.abstractOn the basis of speciation by nuclear magnetic resonance (NMR) spectroscopy, heat of absorption, and pH data, the reactions occurring in aqueous MAPA (3-(methylamino)propylamine), DEEA (2-(diethylamino)ethanol), and their blend at various carbon dioxide (CO2) loadings were identified and discussed. At increasing CO2 loading, the basicity of the solutions decreased. In the MAPA solvent, this led to the hydrolysis of the carbamate species, which corresponded to a drop in the heat of absorption. In the blend, due to the activity of DEEA, such a drop in both pH and heat of absorption was not noticeable. In the presence of MAPA, in the early loadings DEEA had not yet an influence on the (bi)carbonate formation but mainly on the MAPA activity. However, as soon as the trend for (bi)carbonate formation went as in DEEA singly, the released heat steadily decreased. Both in single and in blended MAPA, the carbamate hydrolyses started at similar pH values, i.e., about 9.8–9.5.nb_NO
dc.language.isoengnb_NO
dc.publisherAmerican Chemical Societynb_NO
dc.titleAqueous Mapa, DEEA, and Their Blend as CO2 Absorbents: Interrelationship between NMR Speciation, pH, and Heat of Absorption Datanb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.pagenumber9781-9794nb_NO
dc.source.volume58nb_NO
dc.source.journalIndustrial & Engineering Chemistry Researchnb_NO
dc.source.issue23nb_NO
dc.identifier.doi10.1021/acs.iecr.9b01437
dc.identifier.cristin1718060
dc.description.localcodeLocked until 29.5.2020 due to copyright restrictions. This document is the Accepted Manuscript version of a Published Work that appeared in final form in [Industrial & Engineering Chemistry Research ], copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.iecr.9b01437nb_NO
cristin.unitcode194,66,30,0
cristin.unitnameInstitutt for kjemisk prosessteknologi
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode2


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