Reduction of Industrial Nickel Oxides with a Hydrogen Bearing Gas Between 523 and 673 K
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 temper...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Polish Academy of Sciences
2016-06-01
|
| Series: | Archives of Metallurgy and Materials |
| Subjects: | |
| Online Access: | https://journals.pan.pl/Content/106685/PDF/AMM-2018-2-31-Plascencia.pdf |
| _version_ | 1818489820231499776 |
|---|---|
| author | G. Plascencia |
| author_facet | G. Plascencia |
| author_sort | G. Plascencia |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-10T17:08:33Z |
| format | Article |
| id | doaj.art-90b5342b2df74314a4bc459a8fc8ca51 |
| institution | Directory Open Access Journal |
| issn | 2300-1909 |
| language | English |
| last_indexed | 2024-12-10T17:08:33Z |
| publishDate | 2016-06-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Metallurgy and Materials |
| spelling | doaj.art-90b5342b2df74314a4bc459a8fc8ca512022-12-22T01:40:22ZengPolish Academy of SciencesArchives of Metallurgy and Materials2300-19092016-06-01vol. 63No 2https://doi.org/10.24425/122404Reduction of Industrial Nickel Oxides with a Hydrogen Bearing Gas Between 523 and 673 KG. PlascenciaReduction 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.https://journals.pan.pl/Content/106685/PDF/AMM-2018-2-31-Plascencia.pdfnickel oxides reductionhydrogen reductionavrami-erofeyev kinetic modelnucleation and growthactivation energy |
| spellingShingle | G. Plascencia Reduction of Industrial Nickel Oxides with a Hydrogen Bearing Gas Between 523 and 673 K Archives of Metallurgy and Materials nickel oxides reduction hydrogen reduction avrami-erofeyev kinetic model nucleation and growth activation energy |
| title | Reduction of Industrial Nickel Oxides with a Hydrogen Bearing Gas Between 523 and 673 K |
| title_full | Reduction of Industrial Nickel Oxides with a Hydrogen Bearing Gas Between 523 and 673 K |
| title_fullStr | Reduction of Industrial Nickel Oxides with a Hydrogen Bearing Gas Between 523 and 673 K |
| title_full_unstemmed | Reduction of Industrial Nickel Oxides with a Hydrogen Bearing Gas Between 523 and 673 K |
| title_short | Reduction of Industrial Nickel Oxides with a Hydrogen Bearing Gas Between 523 and 673 K |
| title_sort | reduction of industrial nickel oxides with a hydrogen bearing gas between 523 and 673 k |
| topic | nickel oxides reduction hydrogen reduction avrami-erofeyev kinetic model nucleation and growth activation energy |
| url | https://journals.pan.pl/Content/106685/PDF/AMM-2018-2-31-Plascencia.pdf |
| work_keys_str_mv | AT gplascencia reductionofindustrialnickeloxideswithahydrogenbearinggasbetween523and673k |