Catalysts for the oxygen reduction from heat-treated iron(III) tetramethoxyphenylporphyrin chloride: structure and stability of active sites

Article Abstract:

The preparation of structure and stability of an iron-based catalyst for the oxygen reduction reaction by heat treatment of carbon-supported iron(III) tetramethoxyphenylporphyrin chloride are investigated. A degradation by H2O2, which is a by product of the oxygen reduction, can explain the decrease of catalytic activity during longevity tests.

Observations, Oxidation-reduction reaction, Oxidation-reduction reactions, Thermal properties

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X-Ray absorption fine structure analysis of the local environment of Fe in Fe/A1-MFI

Article Abstract:

An MFI zeolite framework containing iron and aluminum was prepared and characterized by x-ray absorption spectroscopy. Extended x-ray absorption fine structure analysis indicated that in the as-prepared zeolite Fe is present in the framework but migrated to extra framework sites upon thermal activation at elevated temperature.

All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Zeolites, X-ray spectroscopy, Absorption spectra

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X-ray absorption fine structure characterization of the local structure of Fe in Fe-ZSM-5

Article Abstract:

XAFS was used to investigate the local structure of Fe in Fe-ZSM-5. The iron in Fe-ZSM-5 is present in the form of isolated iron cations.

Cations, Absorption, Properties

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