title: Hydrodeoxygenation of vicinal OH groups over heterogeneous rhenium catalyst promoted by palladium and ceria support.
abstract: Heterogeneous ReOx-Pd/CeO2 catalyst showed excellent performance for simultaneous hydrodeoxygenation of vicinal OH groups. High yield (>99%), turnover frequency (300 h(-1)), and turnover number (10,000) are achieved in the reaction of 1,4-anhydroerythritol to tetrahydrofuran. This catalyst can be applied to sugar alcohols, and mono-alcohols and diols are obtained in high yields (≥85%) from substrates with even and odd numbers of OH groups, respectively. The high catalytic performance of ReOx-Pd/CeO2 can be assigned to rhenium species with +4 or +5 valence state, and the formation of this species is promoted by H2/Pd and the ceria support.
authors.affiliation: Graduate School of Engineering, Tohoku University, Aoba 6-6-07, Aramaki, Aoba-ku, Sendai, 980-8579 (Japan).
authors.forename: Nobuhiko
authors.initials: N
authors.lastname: Ota
authors.forename: Masazumi
authors.initials: M
authors.lastname: Tamura
authors.forename: Yoshinao
authors.initials: Y
authors.lastname: Nakagawa
authors.forename: Kazu
authors.initials: K
authors.lastname: Okumura
authors.forename: Keiichi
authors.initials: K
authors.lastname: Tomishige
mesh_terms: D002384:Catalysis; D002563:Cerium / Q000737:chemistry*; D006859:Hydrogen / Q000737:chemistry*; D017665:Hydroxyl Radical / Q000737:chemistry*; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry*; D012211:Rhenium / Q000737:chemistry*
chemical_list: D002563:Cerium; D017665:Hydroxyl Radical; D010165:Palladium; D012211:Rhenium; D006859:Hydrogen; D010100:Oxygen
keywords: heterogeneous catalysis; hydrodeoxygenation; palladium; rhenium oxide; sugar alcohols