Effect of cobalt on nickel oxide toward reduction behaviour in hydrogen and carbon monoxide atmosphere
The reduction behaviour of cobalt doped with nickel oxide and undoped nickel oxide (NiO) by hydrogen (H2) in nitrogen (20%, v/v) and carbon monoxide (CO) in nitrogen (40%, v/v) atmospheres have been investigated by temperature programmed reduction (TPR). The phases formed of partially and completely...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Trans Tech Publications
2020
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| Online Access: | http://psasir.upm.edu.my/id/eprint/88578/ http://psasir.upm.edu.my/id/eprint/88578/1/ABSTRACT.pdf |
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| author | Dzakaria, Norliza Abu Tahari, Maratun Najiha Samidin, Salma Tengku Saharuddin, Tengku Shafazila Salleh, Fairous Lahuri, Azizul Hakim Yarmo, Mohd Ambar |
| author_facet | Dzakaria, Norliza Abu Tahari, Maratun Najiha Samidin, Salma Tengku Saharuddin, Tengku Shafazila Salleh, Fairous Lahuri, Azizul Hakim Yarmo, Mohd Ambar |
| author_sort | Dzakaria, Norliza |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The reduction behaviour of cobalt doped with nickel oxide and undoped nickel oxide (NiO) by hydrogen (H2) in nitrogen (20%, v/v) and carbon monoxide (CO) in nitrogen (40%, v/v) atmospheres have been investigated by temperature programmed reduction (TPR). The phases formed of partially and completely reduced samples were characterized by X-ray diffraction spectroscopy (XRD). TPR results indicate that the reduction of Co doped and undoped nickel oxide in both reductants proceed in one step reduction (NiO → Ni) without intermediate. TPR results also suggested that by adding Co metal into NiO, the reduction to metallic Ni by both reductant gaseous give different intensity of the peak. The reduction process of Co and undoped NiO become faster when H2 was used as a reductant. Furthermore, in H2 atmosphere, Co-NiO give complete reduction to metallic Ni at 700 °C. Meanwhile, XRD analysis indicated that NiO without Co composed better crystallite phases of NiO with higher intensity. |
| first_indexed | 2025-11-15T12:48:35Z |
| format | Article |
| id | upm-88578 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T12:48:35Z |
| publishDate | 2020 |
| publisher | Trans Tech Publications |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-885782021-12-21T08:56:06Z http://psasir.upm.edu.my/id/eprint/88578/ Effect of cobalt on nickel oxide toward reduction behaviour in hydrogen and carbon monoxide atmosphere Dzakaria, Norliza Abu Tahari, Maratun Najiha Samidin, Salma Tengku Saharuddin, Tengku Shafazila Salleh, Fairous Lahuri, Azizul Hakim Yarmo, Mohd Ambar The reduction behaviour of cobalt doped with nickel oxide and undoped nickel oxide (NiO) by hydrogen (H2) in nitrogen (20%, v/v) and carbon monoxide (CO) in nitrogen (40%, v/v) atmospheres have been investigated by temperature programmed reduction (TPR). The phases formed of partially and completely reduced samples were characterized by X-ray diffraction spectroscopy (XRD). TPR results indicate that the reduction of Co doped and undoped nickel oxide in both reductants proceed in one step reduction (NiO → Ni) without intermediate. TPR results also suggested that by adding Co metal into NiO, the reduction to metallic Ni by both reductant gaseous give different intensity of the peak. The reduction process of Co and undoped NiO become faster when H2 was used as a reductant. Furthermore, in H2 atmosphere, Co-NiO give complete reduction to metallic Ni at 700 °C. Meanwhile, XRD analysis indicated that NiO without Co composed better crystallite phases of NiO with higher intensity. Trans Tech Publications 2020 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/88578/1/ABSTRACT.pdf Dzakaria, Norliza and Abu Tahari, Maratun Najiha and Samidin, Salma and Tengku Saharuddin, Tengku Shafazila and Salleh, Fairous and Lahuri, Azizul Hakim and Yarmo, Mohd Ambar (2020) Effect of cobalt on nickel oxide toward reduction behaviour in hydrogen and carbon monoxide atmosphere. Materials Science Forum, 1010. 373 - 378. ISSN 1662-9752 https://www.scientific.net/MSF.1010.373 10.4028/www.scientific.net/MSF.1010.373 |
| spellingShingle | Dzakaria, Norliza Abu Tahari, Maratun Najiha Samidin, Salma Tengku Saharuddin, Tengku Shafazila Salleh, Fairous Lahuri, Azizul Hakim Yarmo, Mohd Ambar Effect of cobalt on nickel oxide toward reduction behaviour in hydrogen and carbon monoxide atmosphere |
| title | Effect of cobalt on nickel oxide toward reduction behaviour in hydrogen and carbon monoxide atmosphere |
| title_full | Effect of cobalt on nickel oxide toward reduction behaviour in hydrogen and carbon monoxide atmosphere |
| title_fullStr | Effect of cobalt on nickel oxide toward reduction behaviour in hydrogen and carbon monoxide atmosphere |
| title_full_unstemmed | Effect of cobalt on nickel oxide toward reduction behaviour in hydrogen and carbon monoxide atmosphere |
| title_short | Effect of cobalt on nickel oxide toward reduction behaviour in hydrogen and carbon monoxide atmosphere |
| title_sort | effect of cobalt on nickel oxide toward reduction behaviour in hydrogen and carbon monoxide atmosphere |
| url | http://psasir.upm.edu.my/id/eprint/88578/ http://psasir.upm.edu.my/id/eprint/88578/ http://psasir.upm.edu.my/id/eprint/88578/ http://psasir.upm.edu.my/id/eprint/88578/1/ABSTRACT.pdf |