title: Acidic Ultrafine Tungsten Oxide Molecular Wires for Cellulosic Biomass Conversion.
abstract: The application of nanocatalysis based on metal oxides for biomass conversion is of considerable interest in fundamental research and practical applications. New acidic transition-metal oxide molecular wires were synthesized for the conversion of cellulosic biomass. The ultrafine molecular wires were constructed by repeating (NH4 )2 [XW6 O21 ] (X=Te or Se) along the length, exhibiting diameters of only 1.2 nm. The nanowires dispersed in water and were observed using high-angle annular dark-field scanning transmission electron microscopy. Acid sites were created by calcination without collapse of the molecular wire structure. The acidic molecular wire exhibited high activity and stability and promoted the hydrolysis of the glycosidic bond. Various biomasses including cellulose were able to be converted to hexoses as main products.
authors.affiliation: Faculty of Engineering, Kanagawa University, Rokkakubashi, Kanagawa-ku, Yokohama-shi, Kanagawa, 221-8686, Japan. zhang.z.ag@m.titech.ac.jp.|Materials and Structures Laboratory, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-ku, Yokohama-city, Kanagawa, 226-8503, Japan. zhang.z.ag@m.titech.ac.jp.
authors.forename: Zhenxin
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: Department of Applied Chemistry, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima, 739-8527, Japan.
authors.forename: Masahiro
authors.initials: M
authors.lastname: Sadakane
authors.affiliation: Research Institute for Chemical Process Technology, National Institute of Advanced Industrial Science and Technology (AIST), 4-2-1 Nigatake, Miyagino, Sendai, 983-8551, Japan.
authors.forename: Norihito
authors.initials: N
authors.lastname: Hiyoshi
authors.affiliation: Faculty of Engineering, Kanagawa University, Rokkakubashi, Kanagawa-ku, Yokohama-shi, Kanagawa, 221-8686, Japan.
authors.forename: Akihiro
authors.initials: A
authors.lastname: Yoshida
authors.affiliation: Materials and Structures Laboratory, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-ku, Yokohama-city, Kanagawa, 226-8503, Japan.
authors.forename: Michikazu
authors.initials: M
authors.lastname: Hara
authors.affiliation: Faculty of Engineering, Kanagawa University, Rokkakubashi, Kanagawa-ku, Yokohama-shi, Kanagawa, 221-8686, Japan. uedaw@kanagawa-u.ac.jp.
authors.forename: Wataru
authors.initials: W
authors.lastname: Ueda
keywords: cellulosic biomass; hexose; hydrolysis; molecular wires; tungsten oxide