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- W2770984079 abstract "The present work establishes a systematic approach based on the application of in-situ Fourier transform infrared spectroscopy (FTIR) for the investigation of the crystal structure, thermal stability, redox behavior (temperature-programmed reduction/temperature-programmed re-oxidation) as well as the catalytic properties of Co3O4 thin films. The syntheses of Co3O4 were achieved by chemical vapor deposition in the temperature range of 400–500 °C. The structure analysis of the as-prepared material revealed the presence of two prominent IR bands peaking at 544 cm−1 (v1) and 650 cm−1 (v2) respectively, which originate from the stretching vibrations of the Co−O bond, characteristic of the Co3O4 spinel. The lattice stability limit of Co3O4 was estimated to be above 650 °C. The redox properties of the spinel structure were determined by integrating the area under the emission bands v1 and v2 as a function of the temperature. Moreover, Co3O4 has been successfully tested as a catalyst towards complete oxidation of dimethyl ether below 340 °C. The exhaust gas analysis during the catalytic process by in situ absorption FTIR revealed that only CO2 and H2O were detected as the final products in the catalytic reaction. The redox behavior suggests that the oxidation of dimethyl ether over Co3O4 follows a Mars-van Krevelen type mechanism. The comprehensive application of in situ FTIR provides a novel diagnostic tool in characterization and performance test of catalysts." @default.
- W2770984079 created "2017-12-04" @default.
- W2770984079 creator A5034824303 @default.
- W2770984079 creator A5068932388 @default.
- W2770984079 date "2017-10-01" @default.
- W2770984079 modified "2023-10-16" @default.
- W2770984079 title "<i>In situ</i> Fourier Transform Infrared Spectroscopy Diagnostic for Characterization and Performance Test of Catalysts" @default.
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- W2770984079 doi "https://doi.org/10.1063/1674-0068/30/cjcp1705097" @default.
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