The effect of ruthenium promotion of the Co/δ-Al2O3 catalyst on the hydrogen reduction kinetics of cobalt

The effect of ruthenium content on the reductive activation of the Co/δ - Al 2 O 3 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 sequent...

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Bibliographic Details
Published in:Reaction kinetics, mechanisms and catalysis mechanisms and catalysis, 2017-04, Vol.120 (2), p.501-525
Main Authors: Kungurova, Olga A., Shtertser, Natalya V., Koemets, Egor G., Cherepanova, Svetlana V., Khassin, Alexander A.
Format: Article
Language:English
Subjects:
Catalysis
Chemistry
Chemistry and Materials Science
Industrial Chemistry/Chemical Engineering
Physical Chemistry
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Summary:The effect of ruthenium content on the reductive activation of the Co/δ - Al 2 O 3 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: Co 3+  → Co 2+  → (Co 0 Co 2+ ) → Co 0 . The first step is the generation of several CoO clusters within one Co 3 O 4 crystallite followed by their further growth obeying the Avrami–Erofeev kinetic equation (An 1 ) with dimensional parameter n 1  
ISSN:1878-5190
1878-5204
DOI:10.1007/s11144-016-1118-2