Luis BRANCO1, Catarina MELO1, Carolina PIRES1, Victoria PAZ1
1LAQV-REQUIMTE, Caparica, Portugal
Nowadays, the development of efficient and sustainable approaches for carbon dioxide conversion into fuels and other valuable products is highly relevant [1]. Chemical reduction of CO? can produce liquid and gas alternative fuels or precursors for fuel production such as higher chain alkanes, methanol, formic acid, methane, among others. Our group is working in the development of sustainable strategies for valorization of CO2. Our recent achievements include the efficient CO2 hydrogenation to methane using ruthenium nanoparticles (Ru-NPs) prepared in situ in ionic liquid media. [2,3]. Also, task-specific ionic systems are efficient media for catalytic conversion of epoxides to cyclic carbonates [4] as well as the electroreduction of CO2 to CO [5].
One promising approaches for conversion of CO2 into fuels and valuable products will be presented based on METAL NANOPARTICLES & IONIC SYSTEMS: Heterogeneous catalysis using ruthenium and cobalt nanoparticles prepared in situ from fluorinated ionic liquid media for hydrogenation of CO2 to methane or methanol.
In all reported approaches, it is possible to discuss the catalytic mechanism associated to each system as well as to explore the continuous process for production of fuels from CO2.
Acknowledgements: The authors thanks to Fundação para Ciência e Tecnologia for financial support in the projects PEst-C/LA0006/2013, RECI/BBBBQB/0230/2012 as well as “SunStorage- Harvesting and storage of solar energy”, with reference POCI- 01-0145-FEDER-016387 and FCT-CAPES (2019-2021) The NMR spectrometers are part of the National NMR Network (PTNMR) and are partially supported by Infrastructure Project N? 022161 (co-financed by FEDER through COMPETE 2020, POCI and PORL and FCT through PIDDAC).
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[2] Melo, C. I.; Szczepa?ska, A.; Bogel-?ukasik, E.; da Ponte, M. N.; Branco, L. C. ChemSusChem 2016, 9, 1081.
[3] Melo, C. I.; Rente, D.; Nunes Da Ponte, M.; Bogel-?ukasik, E.; Branco, L. C. ACS Sustainable Chem. Eng. 2019, 7, 11963.
[4] Paninho, A. B., Forte, A., Zakrzewska, M. E., Mahmudov, K. T., Pombeiro, A. J. L., Guedes da Silva, M. F. C, da Ponte, M. N. Branco, L. C., Nunes, A. V. N. Molecular Catalysis 2021, 499, 111292.
[5] Messias S., Paz, V. P., Cruz, H., Rangel, C. M., Branco, L. C., Reis-Machado, A. Energy Adv., 2022, DOI: 10.1039/D2YA00001F
[6] Maia; R. A., Berg, F., Ritleng, V., Benoît, L., Esteves, P. M. Chem. Eur. J. 2019, 26 2059.