The electrochemical mineralization of oxalic and oxamic acids using modified electrodes based on carbon nanotubes
作者： M. Ferreira , M.F. Pinto , O.S.G.P. Soares , M.F.R. Pereira , J.J.M. Órfão
DOI: 10.1016/J.CEJ.2013.05.004
关键词: Electrochemistry 、 Bimetallic strip 、 Oxalic acid 、 Chemistry 、 Hypochlorite 、 Carbon nanotube 、 Catalysis 、 Reaction rate constant 、 Inorganic chemistry 、 Mineralization (soil science)
摘要: Abstract Constant current and constant potential electrolyses of oxalic oxamic acids were carried out on multiwalled carbon nanotubes (CNT) monometallic (Pd Pt) bimetallic (Ru–Cu) catalysts supported nanotubes. Both carboxylic mineralized with high conversions via hypochlorite ion produced in situ, 0.10 M NaCl medium. Highest efficiency, corresponding to 97%, highest reaction rate for acid mineralization obtained the Ru–Cu/CNT modified electrode, The was achieved a faradic yield 96% an energy consumption 14.6 kWh (kg pollutant)−1in same conversion values oxidation 0.50 M NaOH medium, Pt/CNT, Pd/CNT electrodes, respectively 42%, 60% 85%. In this last 88% initial (15.8 mM) transformed carbonate nitrogen at Pt/CNT anode.
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