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

Autor(es)

Figueredo, Adolfo L. ; Costa, Carolina S. ; Gothe, Maite L. ; Bazito, Reinaldo C. ; Vidinha, Pedro ; Pereira, Camila G.

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF SUPERCRITICAL FLUIDS; v. 215, p. 10-pg., 2024-10-18.

Resumo

The catalytic hydrogenation of fumaric acid, a prominent bioplatform molecule, was evaluated over PdRe/SiO2 within a variety of reaction media compositions comprising methanol, water, supercritical CO2, and their assorted combinations with H2, across a range of temperature and pressure regimes. Meticulous manipulation of the reaction media composition facilitated the precise modulation of catalytic activity to favor specific hydrogenation products. For instance, within a water-saturated supercritical CO2 medium, gamma-butyrolactone exhibited a noteworthy 89 % selectivity at 188 degrees C under 250 bar total pressure, whereas in the methanol-containing supercritical CO2 system, hydrogenation displayed a remarkable 91 % selectivity towards tetrahydrofuran at 175 degrees C and 250 bar. This investigation underscores the multifaceted influence of CO2, extending beyond its pressure derived effects- it functions as a solvent, selectively favoring catalytic pathways and enhancing product selectivity. (AU)

• Processo FAPESP: 14/50279-4 - Brasil Research Centre for Gas Innovation
• Beneficiário: Julio Romano Meneghini
• Modalidade de apoio: Auxílio à Pesquisa - Programa Centros de Pesquisa em Engenharia
• Processo FAPESP: 20/15230-5 - Centro de Pesquisa e Inovação de Gases de Efeito Estufa - RCG2I
• Beneficiário: Julio Romano Meneghini
• Modalidade de apoio: Auxílio à Pesquisa - Programa Centros de Pesquisa em Engenharia
• Processo FAPESP: 15/14905-0 - Desenvolvimento de membranas (bio)catalíticas para a valorização de CO2
• Beneficiário: Pedro Miguel Vidinha Gomes
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Regular