Characterization of 1,8-diazabicyclo(5.4.0)undec-7-ene-hydroxyl-based ionic liquid for CO2 capture
Six 1,8-diazabicyclo(5.4.0)undec-7-ene-based ionic liquids (ILs) linked with ethyl or propyl hydroxyl cations, coupled with thiocyanate, dicyanamide and bistriflimide anions, were synthesized through a two-step reaction: quaternization and ion exchange. The characterization of the ILs was carried ou...
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The Royal Society
2025-01-01
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| Series: | Royal Society Open Science |
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| Online Access: | https://royalsocietypublishing.org/doi/10.1098/rsos.240584 |
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| author | Syarafana O. Amat Normawati M. Yunus Cecilia D. Wilfred |
| author_facet | Syarafana O. Amat Normawati M. Yunus Cecilia D. Wilfred |
| author_sort | Syarafana O. Amat |
| collection | DOAJ |
| description | Six 1,8-diazabicyclo(5.4.0)undec-7-ene-based ionic liquids (ILs) linked with ethyl or propyl hydroxyl cations, coupled with thiocyanate, dicyanamide and bistriflimide anions, were synthesized through a two-step reaction: quaternization and ion exchange. The characterization of the ILs was carried out using 1H and 13C nuclear magnetic resonance spectroscopy (NMR) and Fourier-transform infrared spectroscopy (FTIR). The NMR results confirmed the structures of all the ILs, and these were supported by the FTIR results. In addition, the physicochemical properties, namely thermal stability, density and refractive index, were determined. The effects of the chain length in the cation and the identity of the anion on CO2 absorption were studied in a pressure drop equipment at different pressures. It was found that CO2 sorption increased with increasing pressure and the number of nitrile groups present. The highest CO2 sorption is reported to be 0.96 mol CO2 mol−1 IL at 20 bar. |
| format | Article |
| id | doaj-art-29743159820e40beb7793bc0ddd2d70a |
| institution | Kabale University |
| issn | 2054-5703 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | The Royal Society |
| record_format | Article |
| series | Royal Society Open Science |
| spelling | doaj-art-29743159820e40beb7793bc0ddd2d70a2025-01-08T08:08:07ZengThe Royal SocietyRoyal Society Open Science2054-57032025-01-0112110.1098/rsos.240584Characterization of 1,8-diazabicyclo(5.4.0)undec-7-ene-hydroxyl-based ionic liquid for CO2 captureSyarafana O. Amat0Normawati M. Yunus1Cecilia D. Wilfred2Fundamental and Applied Sciences Department, Centre of Ionic Liquids, Universiti Teknologi PETRONAS, Seri Iskandar, Perak Darul Ridzuan 32610, MalaysiaFundamental and Applied Sciences Department, Centre of Ionic Liquids, Universiti Teknologi PETRONAS, Seri Iskandar, Perak Darul Ridzuan 32610, MalaysiaFundamental and Applied Sciences Department, Centre of Ionic Liquids, Universiti Teknologi PETRONAS, Seri Iskandar, Perak Darul Ridzuan 32610, MalaysiaSix 1,8-diazabicyclo(5.4.0)undec-7-ene-based ionic liquids (ILs) linked with ethyl or propyl hydroxyl cations, coupled with thiocyanate, dicyanamide and bistriflimide anions, were synthesized through a two-step reaction: quaternization and ion exchange. The characterization of the ILs was carried out using 1H and 13C nuclear magnetic resonance spectroscopy (NMR) and Fourier-transform infrared spectroscopy (FTIR). The NMR results confirmed the structures of all the ILs, and these were supported by the FTIR results. In addition, the physicochemical properties, namely thermal stability, density and refractive index, were determined. The effects of the chain length in the cation and the identity of the anion on CO2 absorption were studied in a pressure drop equipment at different pressures. It was found that CO2 sorption increased with increasing pressure and the number of nitrile groups present. The highest CO2 sorption is reported to be 0.96 mol CO2 mol−1 IL at 20 bar.https://royalsocietypublishing.org/doi/10.1098/rsos.240584bistriflimideCO2DBUdicyanamidethiocyanate1,8-diazabicyclo(5.4.0)undec-7-ene |
| spellingShingle | Syarafana O. Amat Normawati M. Yunus Cecilia D. Wilfred Characterization of 1,8-diazabicyclo(5.4.0)undec-7-ene-hydroxyl-based ionic liquid for CO2 capture Royal Society Open Science bistriflimide CO2 DBU dicyanamide thiocyanate 1,8-diazabicyclo(5.4.0)undec-7-ene |
| title | Characterization of 1,8-diazabicyclo(5.4.0)undec-7-ene-hydroxyl-based ionic liquid for CO2 capture |
| title_full | Characterization of 1,8-diazabicyclo(5.4.0)undec-7-ene-hydroxyl-based ionic liquid for CO2 capture |
| title_fullStr | Characterization of 1,8-diazabicyclo(5.4.0)undec-7-ene-hydroxyl-based ionic liquid for CO2 capture |
| title_full_unstemmed | Characterization of 1,8-diazabicyclo(5.4.0)undec-7-ene-hydroxyl-based ionic liquid for CO2 capture |
| title_short | Characterization of 1,8-diazabicyclo(5.4.0)undec-7-ene-hydroxyl-based ionic liquid for CO2 capture |
| title_sort | characterization of 1 8 diazabicyclo 5 4 0 undec 7 ene hydroxyl based ionic liquid for co2 capture |
| topic | bistriflimide CO2 DBU dicyanamide thiocyanate 1,8-diazabicyclo(5.4.0)undec-7-ene |
| url | https://royalsocietypublishing.org/doi/10.1098/rsos.240584 |
| work_keys_str_mv | AT syarafanaoamat characterizationof18diazabicyclo540undec7enehydroxylbasedionicliquidforco2capture AT normawatimyunus characterizationof18diazabicyclo540undec7enehydroxylbasedionicliquidforco2capture AT ceciliadwilfred characterizationof18diazabicyclo540undec7enehydroxylbasedionicliquidforco2capture |