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- W2912782230 abstract "In this study, the cobalt-cerium spinel oxides catalysts were prepared via a citric acid complex method. The catalytic performance and physicochemical properties of the samples for deep propane oxidation were evaluated. Co2Ce1Ox catalysts exhibit the superior low temperature activity with a T50 value of 220 °C, which is much lower than both individual cobalt and cerium oxides. The results show that cerium ions could enter into the spinel-type lattice of the cobalt oxides and lead to the severe lattice distortion. The activated CoO bonds favor the propane activation and enhance the reducibility of active Co3+ species. Meanwhile, high proportion of Co3+ content and better oxygen mobility are also observed in the cobalt-cerium spinel oxides catalysts. The kinetic and the transient experiments reveal that the reduction step of the catalysts plays a crucial role in the deep catalytic propane oxidation. The reaction rate of Co2Ce1Ox catalyst reaches 0.22 μmol g−1 s−1 at 200 °C and its activation energy is the lowest (57.9 kJ mol−1). All the results indicate that the combination of redox behaviors of Co3O4 and oxygen vacancies of CeO2 offer useful support for catalysts design toward propane oxidation at low temperature." @default.
- W2912782230 created "2019-02-21" @default.
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- W2912782230 date "2019-06-01" @default.
- W2912782230 modified "2023-10-10" @default.
- W2912782230 title "Low temperature catalytic oxidation of propane over cobalt-cerium spinel oxides catalysts" @default.
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- W2912782230 doi "https://doi.org/10.1016/j.apsusc.2019.02.118" @default.
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