Effect of transition metals addition on the nickel oxide catalyst toward reduction behaviour in carbon monoxide atmosphere
The chemical reduction progression behaviour of transition metals (Mo, Zr, W, Ce, and Co) doped on NiO was studied using temperature programmed reduction (TPR) analysis. A wet impregnation method was applied to synthesise the doped NiO series catalysts. The reduction progress of the catalysts was at...
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Penerbit Universiti Putra Malaysia
2023
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| author | Dzakaria, Norliza Lahuri, Azizul Hakim Salleh, Fairous Tengku Saharuddin, Tengku Shafazila Samsuri, Alinda |
| author_facet | Dzakaria, Norliza Lahuri, Azizul Hakim Salleh, Fairous Tengku Saharuddin, Tengku Shafazila Samsuri, Alinda |
| author_sort | Dzakaria, Norliza |
| collection | UPM |
| description | The chemical reduction progression behaviour of transition metals (Mo, Zr, W, Ce, and Co) doped on NiO was studied using temperature programmed reduction (TPR) analysis. A wet impregnation method was applied to synthesise the doped NiO series catalysts. The reduction progress of the catalysts was attained by using a reductant gas at the concentration of 40% v/v CO/N2. X-ray diffraction (XRD) was employed to determine the composition of the reduced phases. Undoped NiO was reduced at 384℃ to obtain a cubic phase of NiO. It was observed that Ce/NiO exhibited the lowest reduction temperature of 370℃ among all catalysts. This phenomenon might be due to a higher surface area of Ce/NiO compared to undoped NiO, which facilitated a faster reduction reaction. The rest of the doped NiO series catalysts (Co/NiO, Mo/NiO, W/NiO and Zr/NiO) demonstrated a higher reduction temperature compared to undoped NiO. New peaks in the XRD pattern were observed only for the reduced catalysts of Mo/NiO and W/NiO, which were associated with monoclinic MoO2 and WO2.72 phases, respectively. The formation of new compounds or more stable nickel alloys led to a slower reduction reaction than undoped NiO. Therefore, Ce/NiO was the most efficient catalyst in promoting the formation of Ni under the CO atmosphere. |
| first_indexed | 2024-03-06T11:23:35Z |
| format | Article |
| id | upm.eprints-105914 |
| institution | Universiti Putra Malaysia |
| last_indexed | 2024-03-06T11:23:35Z |
| publishDate | 2023 |
| publisher | Penerbit Universiti Putra Malaysia |
| record_format | dspace |
| spelling | upm.eprints-1059142024-02-28T06:32:44Z http://psasir.upm.edu.my/id/eprint/105914/ Effect of transition metals addition on the nickel oxide catalyst toward reduction behaviour in carbon monoxide atmosphere Dzakaria, Norliza Lahuri, Azizul Hakim Salleh, Fairous Tengku Saharuddin, Tengku Shafazila Samsuri, Alinda The chemical reduction progression behaviour of transition metals (Mo, Zr, W, Ce, and Co) doped on NiO was studied using temperature programmed reduction (TPR) analysis. A wet impregnation method was applied to synthesise the doped NiO series catalysts. The reduction progress of the catalysts was attained by using a reductant gas at the concentration of 40% v/v CO/N2. X-ray diffraction (XRD) was employed to determine the composition of the reduced phases. Undoped NiO was reduced at 384℃ to obtain a cubic phase of NiO. It was observed that Ce/NiO exhibited the lowest reduction temperature of 370℃ among all catalysts. This phenomenon might be due to a higher surface area of Ce/NiO compared to undoped NiO, which facilitated a faster reduction reaction. The rest of the doped NiO series catalysts (Co/NiO, Mo/NiO, W/NiO and Zr/NiO) demonstrated a higher reduction temperature compared to undoped NiO. New peaks in the XRD pattern were observed only for the reduced catalysts of Mo/NiO and W/NiO, which were associated with monoclinic MoO2 and WO2.72 phases, respectively. The formation of new compounds or more stable nickel alloys led to a slower reduction reaction than undoped NiO. Therefore, Ce/NiO was the most efficient catalyst in promoting the formation of Ni under the CO atmosphere. Penerbit Universiti Putra Malaysia 2023-07-03 Article PeerReviewed Dzakaria, Norliza and Lahuri, Azizul Hakim and Salleh, Fairous and Tengku Saharuddin, Tengku Shafazila and Samsuri, Alinda (2023) Effect of transition metals addition on the nickel oxide catalyst toward reduction behaviour in carbon monoxide atmosphere. Pertanika Journal of Science & Technology, 31. ISSN 0128-7680 http://www.pertanika.upm.edu.my/pjst/browse/regular-issue?article=JST-3779-2022 Metal ions atmosphere Atmospheric temperature https://doi.org/10.47836/pjst.31.4.07 |
| spellingShingle | Metal ions atmosphere Atmospheric temperature Dzakaria, Norliza Lahuri, Azizul Hakim Salleh, Fairous Tengku Saharuddin, Tengku Shafazila Samsuri, Alinda Effect of transition metals addition on the nickel oxide catalyst toward reduction behaviour in carbon monoxide atmosphere |
| title | Effect of transition metals addition on the nickel oxide catalyst toward reduction behaviour in carbon monoxide atmosphere |
| title_full | Effect of transition metals addition on the nickel oxide catalyst toward reduction behaviour in carbon monoxide atmosphere |
| title_fullStr | Effect of transition metals addition on the nickel oxide catalyst toward reduction behaviour in carbon monoxide atmosphere |
| title_full_unstemmed | Effect of transition metals addition on the nickel oxide catalyst toward reduction behaviour in carbon monoxide atmosphere |
| title_short | Effect of transition metals addition on the nickel oxide catalyst toward reduction behaviour in carbon monoxide atmosphere |
| title_sort | effect of transition metals addition on the nickel oxide catalyst toward reduction behaviour in carbon monoxide atmosphere |
| topic | Metal ions atmosphere Atmospheric temperature |
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