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

Author(s)

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

• Document type: Journal article
• Source: JOURNAL OF SUPERCRITICAL FLUIDS; v. 215, p. 10-pg., 2024-10-18.

Abstract

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)

• FAPESP's process: 14/50279-4 - Brasil Research Centre for Gas Innovation
• Grantee: Julio Romano Meneghini
• Support Opportunities: Research Grants - Research Centers in Engineering Program
• FAPESP's process: 20/15230-5 - Research Centre for Greenhouse Gas Innovation - RCG2I
• Grantee: Julio Romano Meneghini
• Support Opportunities: Research Grants - Research Centers in Engineering Program
• FAPESP's process: 15/14905-0 - Development of (bio)catalytic membranes for CO2 valorization
• Grantee: Pedro Miguel Vidinha Gomes
• Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants