- Tytuł:
- Reduction of Industrial Nickel Oxides with a Hydrogen Bearing Gas Between 523 and 673K
- Autorzy:
- Plascencia, G.
- Powiązania:
- https://bibliotekanauki.pl/articles/352276.pdf
- Data publikacji:
- 2018
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
nickel oxides reduction
hydrogen reduction
Avrami-Erofeyev kinetic model
nucleation and growth
activation energy - Opis:
- Reduction of three industrial nickel oxides (Goro, Tokyo and Sinter 75) with a hydrogen bearing gas was revisited in the temperature interval from 523 to 673 K (250 to 400°C). A pronounced incubation period is observed in the temperature interval tested. This period decreases as the reduction temperature increases. Thermogravimetric data of these oxides were fitted using the Avrami-Erofeyev kinetic model. The reduction of these oxides is controlled by a nucleation and growth mechanism of metallic nickel over the oxides structure. Rate kinetic constants were re-evaluated and the activation energy for the reduction of these oxides was re-calculated.
- Źródło:
-
Archives of Metallurgy and Materials; 2018, 63, 2; 781-789
1733-3490 - Pojawia się w:
- Archives of Metallurgy and Materials
- Dostawca treści:
- Biblioteka Nauki
Artykuł