A carregar...
Publicação
Poly(ionic liquid)-based aerogels for continuous-flow CO2 upcycling
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 6.22 MB | Adobe PDF |
Orientador(es)
Resumo(s)
The atmospheric concentration of CO2 is rising at an alarming pace, creating a pressing need for new and sustainable materials capable of capture and conversion. Poly(ionic liquid)s (PILs) are particularly effective catalysts for processes at or near atmospheric pressure. PILs industrial application poses challenges due to the low porosity of PIL, the limited batch conversion capacity, and the difficulties in reuse. To overcome these limitations, we herein propose the use of AEROPILs catalysts obtained from the integration of PILs in chitosan-based aerogels. These cost-effective highly porous materials have unique and tuneable porous properties making them not only ideal sustainable CO2 sorbents but also promising heterogeneous catalysts. While AEROPILs show moderate yields for CO2 conversion in batch mode, high catalytic activity was achieved when AEROPILs were used to catalyse the CO2 cycloaddition reaction to epoxides in packed-bed reactors operated under continuous flow. The catalytic activity and stability were maintained over 60 h without activity loss, and high productivity (space-time yield of 21.18 gprod h−1 L−1). This research reveals the pioneering use of AEROPILs to efficiently upcycle CO2 into cyclic carbonate under a continuous flow setup.
Descrição
Also, through projects: PTNMR-ROTEIRO/0031/2013, co-financed by ERDF through COMPETE 2020, PT2020, POCI and PORL and FCT through PIDDAC (POCI-01-0145-FEDER-007688, POCI-01-0145-FEDER-007265).
Work supported by MICIU/AEI/10.13039/501100011033 [grant PID2020-120010RB-I00] and ERDF/EU funds.
Generalitat Valenciana is gratefully acknowledged for funding for infrastructure (IDIFEDER/2021/029), GenT (CIDEGENT 2018/036) and Santiago Grisol\u00EDa Programme (CIGRIS/2021/075). C.I.B. acknowledges MCINN and FSE+ for an FPI fellowship (PRE2021-097177/AEI/10.13039/501100011033).
R.V.B. acknowledges the COST Action CA18125 \u201CAdvanced Engineering and Research of aeroGels for Environment and Life Sciences\u201D (AERoGELS), funded by the European Commission, for the granted Short Term Scientific Missions to perform the initial aerogels synthesis and processing in the Universidade de Santiago de Compostela, and the continuous-flow CO 2 cycloadditions in the Universitat Jaume I.
Publisher Copyright:
© 2024 The Authors
Palavras-chave
Aerogel CO cycloadditions Packed-bed reactors Polymeric ionic liquids Porous materials Chemical Engineering (miscellaneous) Waste Management and Disposal Process Chemistry and Technology SDG 9 - Industry, Innovation, and Infrastructure SDG 13 - Climate Action