Pd catalysts supported on different hydrophilic or hydrophobic carbonaceous substrate for furfural and 5-(hydroxymethyl)-furfural hydrogenation in water

Author(s)

Silva, Wesley R. ^[1] ; Matsubara, Elaine Y. ^[1] ; Rosolen, Jose M. ^[1] ; Donate, Paulo M. ^[1] ; Gunnella, Roberto ^[2]

Affiliation

^[1] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Quim, Ave Bandeirantes 3900, BR-14040901 Ribeirao Preto, SP - Brazil

^[2] Univ Camerino, Phys Div, Via Madonna dele Carceri 9, I-62032 Camerino - Italy

• Document type: Journal article
• Source: MOLECULAR CATALYSIS; v. 504, MAR 2021.
• Web of Science Citations: 0

Abstract

We hydrogenated furfural and 5-(hydroxymethyl)furfural (HMF) in water in a reaction catalyzed by Pd nanoparticles on carbonaceous materials with different morphology and hydrophobic degree. The different Pd catalysts were prepared by dipping the carbonaceous material into a Pd-0 micro-emulsion. The catalyst support affected the catalytic hydrogenation of furfural and HMF. By using micrometric active carbon (AC) combined with cup-stacked carbon nanotubes (CSCNTs) and Pd0/2+ nanoparticles (Pd), we obtained a micro/nanostructured material designated Pd/CSCNT-AC, which performed better than the other carbonaceous materials containing similar Pd nanoparticle loading. Pd/CSCNT-AC produced tetrahydrofurfuryl alcohol from furfural with excellent selectivity (>99 %). Unlike Pd on hybrophobic spheroid graphite or hydrophilic AC, Pd/CSCNT-AC hydrogenated both the C=O and C=C double bonds of furfural and catalyzed HMF hydrogenation at the C=O double bond more selectively: between 85 % and 99 % selectivity toward 2,5-dihydroxymethylfuran. We also investigated how temperature, hydrogen pressure, and reaction time affected HMF hydrogenation in water. Finally, Pd/CSCNT-AC was recycled several times without significant catalytic activity loss. (AU)

• FAPESP's process: 18/24680-4 - Synthesis and structural modifications of butyrolactone derivatives to obtain new compounds of biological interest
• Grantee: Paulo Marcos Donate
• Support Opportunities: Regular Research Grants
• FAPESP's process: 17/04759-2 - Free-binder electrodes for storage/conversion energy
• Grantee: Jose Mauricio Rosolen
• Support Opportunities: Regular Research Grants
• FAPESP's process: 16/04896-7 - Multicomponent processes to synthesize new compounds of pharmacological interest - Part 2
• Grantee: Paulo Marcos Donate
• Support Opportunities: Regular Research Grants