Total Hydrogenation of Furfural under Mild Conditions over a Durable Ni/TiO₂-SiO₂ Catalyst with Amorphous TiO₂ Species.

ABSTRACT: One-step total hydrogenation of furfural (FAL) toward tetrahydrofurfuryl alcohol in continuous flow using cheap transition metals still remains a great challenge. We herein reported the total hydrogenation of FAL over Ni (?5 nm) nanoparticles loaded on TiO₂-SiO₂ composites with long-term stability. The TiO₂-SiO₂ composites comprise amorphous TiO _x which was grafted on the silica aerogel by acetyl acetone-aided controlled hydrolysis of tetrabutyl titanate. The catalysts were characterized by several techniques including Brunauer-Emmett-Teller, X-ray diffraction, transmission electron microscopy, H₂-temperature-programmed reduction, and H₂-temperature-programmed desorption. The hydrogenation performances were systematically explored in terms of TiO₂ content, Ni loading, liquid hour space velocity, and so forth. Ni nanoparticles in contact with amorphous TiO _x showed strengthened interaction with the C=O bond of FAL as well as enhanced hydrogen dissociation and desorption ability, hence benefiting the overall hydrogenation process.

SUBMITTER: Xu J 

PROVIDER: S-EPMC7689957 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature