The effect of ruthenium promotion of the Co/d-Al2O3 catalyst on the hydrogen reduction kinetics of cobalt
| Autor: | Olga A. Kungurova, Svetlana V. Cherepanova, Egor G. Koemets, Natalya V. Shtertser, Alexander A. Khassin |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
рутений
Materials science 010405 organic chemistry Diffusion Inorganic chemistry Nucleation Kinetic scheme chemistry.chemical_element Activation energy 010402 general chemistry 01 natural sciences Catalysis 0104 chemical sciences Ruthenium кобальтовые катализаторы chemistry Crystallite Physical and Theoretical Chemistry промотирование Cobalt |
| Zdroj: | Reaction kinetics, mechanisms and catalysis. 2017. Vol. 120, № 2. P. 501-525 |
| Popis: | The effect of ruthenium content on the reductive activation of the Co/δ-Al2O3 catalyst was investigated using thermal analysis and in situ synchrotron radiation X-ray diffraction. Data of thermal analysis and phase transformations can be described by a kinetic scheme consisting of three sequential steps: Co3+ → Co2+ → (Co0Co2+) → Co0. The first step is the generation of several CoO clusters within one Co3O4 crystallite followed by their further growth obeying the Avrami–Erofeev kinetic equation (An1) with dimensional parameter n1 |
| Databáze: | OpenAIRE |
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