Catalytic decomposition of hydrogen peroxide on iron oxide: kinetics, mechanism, and implications

Article Abstract:

The goethite particles may play an important role in the fate of H2O2 in surface and seawaters, according to a research describing the heterogenous catalytic reactions of H2O2 with granular size goethite particles in aquaeous solution under various experimental conditions. The study shows that decomposition rate of H2O2 over goethite surface can be described by the second-order kinetic expression: -ddt= k , where k=0.031 M-1 s-1, at pH 7 in the absence of any inorganic or organic chemical species.

United States, Product information, All Other Basic Inorganic Chemical Manufacturing, Hydrogen Peroxide, Article

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Catalytic decomposition of hydrogen peroxide on iron oxide: kinetics, mechanism, and implications

Article Abstract:

The decomposition of hydrogen peroxide (H2O2) on goethite is shown to be a function of the catalytic action of iron oxide on peroxide that follows the Langmuir-Hinshelwood rate model in the absence of any inorganic or organic chemical species. The first order reaction is governed by the intrinsic reaction rates on the oxide surfaces, followed by the Langmuir-Hinshelwood reaction.

Research and Development in the Physical, Engineering, and Life Sciences, Chemistry, Research, Hydrologic cycle, Water cycle, Environmental chemistry

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Chemical oxidation by photolytic decomposition of hydrogen peroxide

Article Abstract:

The chemical oxidation of hydrogen peroxide and ultraviolet light was investigated in a continuous-flow stirred tank reactor under various experimental conditions. The results were used as basis for developing a kinetic model of the process. The accuracy of the kinetic system was verified by testing the model in pure water and in synthetic solutions.

Models, Management, Pollution, Water, Underground, Groundwater, Pollutants, Oxidation-reduction reaction, Oxidation-reduction reactions

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