Catalytic activity of a zirconium(IV) oxide surface supported with transition metal ions
作者： Ibrahim A. Salem , Rania I. Elhag , Kamal M. S. Khalil
关键词: Photochemistry 、 Reaction mechanism 、 Reaction rate constant 、 Zirconium 、 Inorganic chemistry 、 Organometallic chemistry 、 Order of reaction 、 Chemistry 、 Catalysis 、 Radical 、 Reaction rate
摘要: The kinetics of H2O2 decomposition have been investigated using ZrO2 supported with transition metal ions including CuII, AgI, HgII, CoII, MnII, NiII and FeIII. At pH = 6.8, the reaction rate exhibits a first order dependence on initial concentration at low concentrations. activity different catalysts is strongly dependent [H2O2]0 used. proceed via formation peroxo-intermediate which has an inhibiting effect rate. increases increasing pH, attains limiting higher pH's. A mechanism proposed involving liberation HO2 radicals from as rate-determining step.
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