Reduction of Industrial Nickel Oxides with a Hydrogen Bearing Gas Between 523 and 673K

• Autorzy: Plascencia G.

Identyfikatory

DOI

10.24425/122404

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

nickel oxides reduction; hydrogen reduction; Avrami-Erofeyev kinetic model; nucleation and growth; activation energy

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2018
• Tom: Vol. 63, iss. 2
• Strony: 781--789
• Opis fizyczny: Bibliogr. 24 poz., rys., tab., wykr.

Twórcy

autor

Plascencia G.

• Ciitec-Instituto Politécnico Nacional, Cerrada Cecati S/N, CD. De México, C. P. 02250, México

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).