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Multi-approaches strategies for converting CO2 to platform molecules and value-added chemicals: catalysis and electrocatalysis investigations


Strategies to reduce CO2 emissions and control the increase in atmospheric CO2 levels are urgent. A promising approach to help to minimize the accumulation of CO2 in the atmosphereand the corresponding negative environmental impacts includes the use of CO2 as feedstock for chemicals, as fuels for example. These compounds can be synthesized by the CO2 hydrogenation via heterogeneous catalysis or electrocatalysis. At the corresponding state of the art, however, catalysts employed in the CO2 hydrogenation present low CO2 conversion, low selectivity towards the formation of a specific product, low stability under the reaction conditions and/or high costs. Therefore, the development of more efficient catalysts, preferentially based on non-noble elements, is necessary. In the present project, we propose unconventional multi-approaches strategies to address the transformation of CO2 to platform molecules and value added C2+ compounds via heterogeneous catalysis and electrocatalysis, employing catalysts composed by copper and iron, which are non-noble elements. Within this project, we intend to identify potential similarities and discrepancies between the mechanisms of C-C bond formation and carbon-chain growth corresponding to the CO2 catalytic hydrogenation and electro-reduction. This further mechanistic understanding can contribute for the future design of catalysts with specific characteristics to efficiently and selectively hydrogenate CO2 to useful products at different reaction environments (gas vs. liquid phase). The development of efficient catalysts to the hydrogenation of CO2 to platform molecules and value added products could potentially lead to applications with commercial value in the biobased economy, as, for example, in sugar-energy industries. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SANTANA, CASSIA S.; SHINE, LUIZA S.; VIEIRA, LUIZ H.; PASSINI, RICARDO J.; URQUIETA-GONZALEZ, ERNESTO A.; ASSAF, ELISABETE M.; GOMES, JANAINA F.; ASSAF, JOSE M. ffect of the Synthesis Method on Physicochemical Properties and Performance of Cu/ZnO/Nb2O5 Catalysts for CO2 Hydrogenation to Methano. Industrial & Engineering Chemistry Research, v. 60, n. 51, p. 18750-18758, DEC 29 2021. Web of Science Citations: 0.
DA SILVA, ALISSON H. M.; RAAIJMAN, STEFAN J.; SANTANA, CASSIA S.; ASSAF, JOSE M.; GOMES, JANAINA F.; KOPER, MARC T. M. Electrocatalytic CO2 reduction to C2+ products on Cu and CuxZny electrodes: Effects of chemical composition and surface morphology. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, v. 880, JAN 1 2021. Web of Science Citations: 7.

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