title: Photoassist-phosphorylated TiO2as a catalyst for direct formation of 5-(hydroxymethyl)furfural from glucose.
abstract: Photo-assisted phosphorylation of an anatase TiO2catalyst was examined to improve its catalytic performance for the direct production of 5-(hydroxymethyl)furfural (HMF), a versatile chemical platform, from glucose. In phosphorylation based on simple esterification between phosphoric acid and surface OH groups on anatase TiO2with water-tolerant Lewis acid sites, the density of phosphates immobilized on TiO2is limited to 2 phosphates nm-2, which limits selective HMF production. Phosphorylation of the TiO2surface under fluorescent light irradiation increases the surface phosphate density to 50%, which is higher than the conventional limit, thus preventing the adsorption of hydrophilic glucose molecules on TiO2and resulting in a more selective HMF production over photoassist-phosphorylated TiO2.
authors.affiliation: Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, 4259-R3-33 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan. hara.m.ae@m.titech.ac.jp.
authors.forename: Masashi
authors.initials: M
authors.lastname: Hattori
authors.affiliation: Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, 4259-R3-33 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan. hara.m.ae@m.titech.ac.jp.
authors.forename: Keigo
authors.initials: K
authors.lastname: Kamata
authors.affiliation: Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, 4259-R3-33 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan. hara.m.ae@m.titech.ac.jp and JST, Advanced Low Carbon Technology Research and Development Program (ALCA), 4-1-8 Honcho, Kawaguchi 332-0012, Japan.
authors.forename: Michikazu
authors.initials: M
authors.lastname: Hara