Acidic Ultrafine Tungsten Oxide Molecular Wires for Cellulosic Biomass Conversion. Issue 35 (2nd August 2016)

• Record Type: Journal Article
• Authors: Zhang, Zhenxin; Sadakane, Masahiro; Hiyoshi, Norihito; Yoshida, Akihiro; Hara, Michikazu; Ueda, Wataru
• Is Part Of: Angewandte Chemie international edition. Volume 55:Issue 35(2016)
• Page Start: 10234
• Page End: 10238
• Publication Date: 2016-08-02
• Subjects: cellulosic biomass -- hexose -- hydrolysis -- molecular wires -- tungsten oxide; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201602770
• Languages: English
• ISSNs: 1433-7851

Abstract

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. Abstract : A molecular wire based on tungsten oxide with a diameter of 1.2 nm was synthesized. Acid sites were created in aqueous solution by calcination without collapse of the molecular wire structure. This material was applied for the hydrolysis of cellulosic biomass to produce hexose.