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Interfacial CoO x Layers on TiO 2 as an Efficient Catalyst for Solvent‐Free Aerobic Oxidation of Hydrocarbons
Author(s) -
Wang Hai,
Wang Liang,
Zhang Jian,
Wang Chengtao,
Liu Ziyu,
Gao Xinhua,
Meng Xiangju,
Yoo Seung Jo,
Kim JinGyu,
Zhang Wei,
Xiao FengShou
Publication year - 2018
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201801709
Subject(s) - catalysis , cobalt , cobalt oxide , oxide , adsorption , transition metal , chemical engineering , heterogeneous catalysis , noble metal , materials science , inorganic chemistry , oxidation state , solvent , chemistry , organic chemistry , metallurgy , engineering
Construction of efficient interfaces to improve the performance of supported metal catalysts is a challenging but effective technique. A newly synthesized catalyst with layered cobalt oxide on the surface of titania (layer‐CoO x /TiO 2 ) is highly selective towards the aerobic oxidation of C−H bonds in a series of hydrocarbons under sustainable conditions. The layer‐CoO x /TiO 2 easily outperforms the state‐of‐the‐art noble metal catalysts and homogeneous cobalt salts used in industry. In‐depth structural and functional characterization reveal that the layer‐CoO x /TiO 2 readily reacts with O 2 for the adsorption and activation of C−H bonds. The layered structure of CoO x can maximize the interfacial effect of CoO x /TiO 2 leading to a good performance for the oxidation of C−H bonds.
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