Pedro Vidinha

Nickel–Zinc Catalysts Favor CO Production via Carbide Formation in CO2 Hydrogenation

Nágila E. C. Maluf, Maitê L. Gothe, Adriano Henrique Braga, Laís R. Borges et autres

Abstract Achieving high CO selectivity in CO2 hydrogenation with non-noble metal catalysts remains challenging. Here, we report a simple and cost-effective in situ synthesis of nickel–zinc carbide (Ni3ZnC) from Ni species supported on ZnO under reaction conditions. A higher amount of Ni3ZnC …

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Effect of promoters Co and Ru on Ni/CeO2 catalysts in ethanol steam reforming for hydrogen production

Thiago de Melo Augusto, Priscilla J. Zambiazi, Bruno Henrique Arpini, Matheus L.L. Cunha et autres

Bioethanol is an attractive renewable feedstock for sustainable H 2 production because of its high hydrogen content and ease handling. Among thermochemical routes, ethanol steam reforming (ESR) offers the highest theoretical H 2 yield, yet catalyst deactivation by carbon deposition limits its …

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Calcination temperature as a key lever for product selectivity in CO2 hydrogenation to methanol over Re/TiO2

Vinicius dos Santos, Maite Gothe, Laís Borges, Dairon Fuentes et autres

• The calcination of the Re/TiO₂ catalyst enhance methanol selectivity from 53% to 73%. • Calcination generates smaller Re clusters, which are crucial for high methanol selectivity. • In situ synchrotron XRD and Raman reveal that calcination decomposes the NH₄ReO₄ precursor into …

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Emerging trends in light harnessing for CO2 reduction using photocatalytic MOFs

Arthur Reymond, Almudena Martí, Ekaterina Chernova, Pedro Vidinha et autres

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Redox regulatory architecture governs carbon flux distribution between acetoin and 2,3-butanediol in supercritical CO2-tolerant Bacillus velezensis C2A31

Maria Luisa Zardo, Matheus Marques Torres, Luiziana Silva, Pedro Vidinha et autres

Operando XAS and DFT Uncover Structure-Performance Relationships in Re/TiO 2 for Selective CO 2 Hydrogenation to Methanol

Maitê L. Gothe, Adriano Henrique Braga, Laís Reis Borges, Jiyun Hong et autres

High Resolution Image Download MS PowerPoint Slide The conversion of CO 2 into value-added chemicals, such as methanol, offers a promising pathway toward a renewable energy future. However, a precise kinetic control and a highly selective catalyst are necessary to overcome the …

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Cu-Doped Layered Double Hydroxide Nanotubes For CO 2 Reduction under Supercritical Conditions

Alexandre C. Teixeira, Bruno Manduca, Adolfo L. Figueredo, Alysson F. Morais et autres

High Resolution Image Download MS PowerPoint Slide Layered double hydroxides are structurally versatile materials whose chemical and electronic properties can be tuned to yield efficient heterogeneous catalysts and catalyst precursors for green chemistry applications, including sustainable fuel production for the methanol economy. …

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Podcast Químicos Portugueses Pelo Mundo: 1.a Temporada

Pedro Vidinha, Raquel Ferreira Lopes, Ricardo Couto

Unveiling the Role of Rhenium Precursors in Supercritical CO₂ Hydrogenation: A Comparative Study of ReOx/TiO₂ Catalysts

Maitê L. Gothe, Laís Reis Borges, Marcelo Cecconi Portes, Orlando Rodrigues et autres

Abstract Heterogeneous rhenium catalysts supported on various oxides, particularly TiO2, have demonstrated effectiveness in converting carbon dioxide (CO2) to methanol via hydrogenation, showing high selectivity under diverse reaction conditions. However, the impact of different rhenium precursors on the catalytic performance and physicochemical …

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Optimizing Metal-free Phenanthroline-assisted Nitrogen-doped Reduced Graphene Oxide for Enhanced Oxygen Reduction Reaction: An Experimental Design and Performance Study

Eleilde de Sousa Oliveira, Adolfo L. Figueredo, Maitê L. Gothe, Pedro Vidinha et autres

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Tuning the selectivity of catalytic hydrogenation of fumaric acid with supercritical CO2

Adolfo L. Figueredo, Carolina S. Costa, Maitê L. Gothe, Reinaldo Camino Bazito et autres

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Podcast “Químicos Portugueses pelo Mundo”

Pedro Vidinha