Study on Supported Triamino-functionalized Ionic Liquids for Carbon Dioxide Capture
Date
2021-04-29
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
The CO2 capture performance of two novel amino acid ionic liquid (AAIL)-based adsorbents was studied. The sorbents were synthesized by immobilizing two triamino-functionalized ionic liquids (i.e., 1-aminoethyl-3-methylimidazolium lysine ([AEMIM][Lys]) and 1-aminopropyl-3-methylimidazolium lysine ([APMIM][Lys])) into two types of supports (i.e., mesoporous silica SBA-15 and polymer poly(methyl methacrylate) (PMMA)) with different loadings. [AEMIM][Lys] and [APMIM][Lys] with one additional amino group in their cations are efficient at enhancing the CO2 capacity of subsequent supported AAILs, as higher numbers of functional amino groups in AAILs significantly increase their CO2 capture capacity. The prepared samples were characterized by Nuclear Magnetic Resonance (NMR), Brunauer-Emmet-Teller (BET) analysis, thermogravimetric analysis (TGA) decomposition, and X-ray diffraction (XRD). The samples were also investigated for CO2 sorption performance by CO2 isotherms and TGA kinetics. 50 wt% [AEMIM][Lys]-immobilized on PMMA showed the best CO2 capture capacities of 1.5 mmol/g-sorb at adsorption conditions of 30°C and under 15% CO2 inlet concentration.
Description
Keywords
CO2 capture, aminoethyl imidazole-lysine, aminopropyl imidazole-lysine, SBA-15 support, PMMA support
Citation
Huang, Z. (2021). Study on Supported Triamino-functionalized Ionic Liquids for Carbon Dioxide Capture (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.