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ChemSusChem. 2018 Nov 23;11(22):3965-3974. doi: 10.1002/cssc.201801709. Epub 2018 Oct 23.

Interfacial CoOx Layers on TiO2 as an Efficient Catalyst for Solvent-Free Aerobic Oxidation of Hydrocarbons.

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Key Lab of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, P.R. China.
Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, 310028, P.R. China.
Key Laboratory of Low-Carbon Conversion Science & Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, P.R. China.
State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, P.R. China.
Electron Microscopy Research Center, Korea Basic Science Institute, Daejeon, 34133, South Korea.
Key Laboratory of Mobile Materials MOE, Electron Microscopy Center and School of Materials Science & Engineering, Jilin University, Changchun, 130012, P.R. China.
CIC Energigune, Albert Einstein 48, 01510 Miñano, and IKERBASQUE, Basque Foundation for Science, Bilbao, 48013, Spain.


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-CoOx /TiO2 ) is highly selective towards the aerobic oxidation of C-H bonds in a series of hydrocarbons under sustainable conditions. The layer-CoOx /TiO2 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-CoOx /TiO2 readily reacts with O2 for the adsorption and activation of C-H bonds. The layered structure of CoOx can maximize the interfacial effect of CoOx /TiO2 leading to a good performance for the oxidation of C-H bonds.


C−H activation; aerobic oxidation; cobalt; heterogenous catalysis; titania


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