{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T12:26:24Z","timestamp":1790857584589,"version":"4.1.0"},"reference-count":56,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2025,9,21]],"date-time":"2025-09-21T00:00:00Z","timestamp":1758412800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Greece and the EU through the Operational Program \u201cHuman Resources Development through Ph.D. studies\u201d"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Carbon dioxide (CO2) capture using alkanolamines remains the most mature technology, yet faces challenges including solvent loss, high regeneration energy and equipment corrosion. Ionic liquids (ILs) are proposed as alternatives, but their high viscosity and production costs hinder industrial use. Thus, blending ILs with amines offers a promising approach. This work presents new experimental data for aqueous blends of 1-butyl-3-methylimidazolium hydrogen sulfate, Bmim+HSO4\u2212, with 2-amino-2-methyl-1-propanol (AMP) and 3-(methylamino)propylamine (MAPA) and for choline glycine, Ch+Gly\u2212, with AMP, modeled using the modified Kent\u2013Eisenberg approach. It was shown that substituting a portion of the amine with Bmim+HSO4\u2212 reduces CO2 uptake per mole of amine due to the lower solution\u2019s basicity, despite the added sites for physical absorption. In contrast, the replacement of an amine portion with Ch+Gly\u2212 enhances both physical and chemical interactions, leading to increased CO2 solubility per mole of amine. Finally, replacing a small portion of water with [Ch+][Gly\u2212] does not significantly alter the bulk CO2 solubility (moles of CO2 per kg of solvent) but lowers the solvent\u2019s vapor pressure. Given the non-toxic nature of [Ch+][Gly\u2212], the resulting solvent poses no added environmental risk. Model predictions agree well with experimental data (deviations of 2.0\u201311.6%) and indicate low unreacted amine content at CO2 partial pressures of 1\u201310 kPa for carbamate-forming amines, i.e., Gly\u2212, and MAPA. Consequently, at higher CO2 partial pressures, the solubility increases due to carbamate hydrolysis and molecular CO2 dissolution.<\/jats:p>","DOI":"10.3390\/molecules30183832","type":"journal-article","created":{"date-parts":[[2025,9,22]],"date-time":"2025-09-22T11:18:16Z","timestamp":1758539896000},"page":"3832","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["CO2 Solubility in Aqueous Solutions of Amine\u2013Ionic Liquid Blends: Experimental Data for Mixtures with AMP and MAPA and Modeling with the Modified Kent\u2013Eisenberg Model"],"prefix":"10.3390","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0009-0001-0041-0785","authenticated-orcid":false,"given":"Giannis","family":"Kontos","sequence":"first","affiliation":[{"name":"Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4907-4794","authenticated-orcid":false,"given":"Ioannis","family":"Tsivintzelis","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,9,21]]},"reference":[{"key":"ref_1","unstructured":"Kohl, A.L., and Nielsen, R. 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