Preparation of FeCrAlloy-supported Co3O4 catalysts by electroplating for the Joule-heat-ignited catalytic oxidation of propane
Qin Shaoli, Chen Tao, Pan Feng, Li Jinjun*
School of Resources and Environmental Sciences,Wuhan University,Wuhan 430079,Hubei,China
Abstract
Joule-heat-ignited catalytic oxidation based on metallic substrate-supported catalysts is a recently proposed technology for the emission control of volatile organic compounds,which involves passing electric currents into the metallic substrates to generate Joule heat to activate the supported catalysts.Due to the lower adhesion between the catalyst coating and the substrate surface,the loading of catalyst onto metallic surface is a technical difficulty.In this work,we electroplated Co and Ce onto FeCrAlloy,and the subsequent calcination gave rise to supported oxide catalysts,which were used for Joule-heat-ignited catalytic oxidation of propane.The anodized metallic substrate allows better dispersion of catalysts,and its supported catalyst coating has cage structures,which favors mass transfer during catalytic reactions.The presence of CeO2 can significantly improve the performance of Co3O4 in the catalytic oxidation of propane.With further optimization,electroplating can be an effective method for preparation of metal-supported catalysts.
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