Nanosized Ni/SBA-15 Catalysts for CO<sub>2</sub> Reforming of CH<sub>4</sub>
Ni, Co, and Co−Ni bimetallic catalysts supported over SBA-15 and over SBA-15 doped with Zn or Ce oxides were prepared and tested in a methane dry reforming reaction. The loading of the metals in the catalyst was 5 wt % for either mono or bimetallic catalysts. The prepared catalysts were te...
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MDPI AG
2019-05-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/9/9/1926 |
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| author | Ahmed A. Ibrahim Ashraf Amin Ahmed S. Al-Fatesh Nadavala Siva Kumar Samsudeen Olajide Kasim Abdulrhman S. Al-Awadi Ahmed M. El-Toni Ahmed Elhag Abasaeed Anis H. Fakeeha |
| author_facet | Ahmed A. Ibrahim Ashraf Amin Ahmed S. Al-Fatesh Nadavala Siva Kumar Samsudeen Olajide Kasim Abdulrhman S. Al-Awadi Ahmed M. El-Toni Ahmed Elhag Abasaeed Anis H. Fakeeha |
| author_sort | Ahmed A. Ibrahim |
| collection | DOAJ |
| description | Ni, Co, and Co−Ni bimetallic catalysts supported over SBA-15 and over SBA-15 doped with Zn or Ce oxides were prepared and tested in a methane dry reforming reaction. The loading of the metals in the catalyst was 5 wt % for either mono or bimetallic catalysts. The prepared catalysts were tested in a continuous-flow fixed-bed reactor at 800 °C under atmospheric pressure. XRD, TPR, TPD, and SEM characterization techniques were employed to investigate the catalytic properties of fresh catalysts. SEM and TGA were used to study the catalytic properties of spent catalysts. A remarkable effect on the reduction properties and catalytic performance of catalysts was observed after adding Zn and Ce. Over an 8 h test, Ni/SBA-15 showed the best activity and stability. The conversion was 90% for CH<sub>4</sub> and CO<sub>2</sub>. Co−Ni/SBA-15 and Co−Ni/Ce−SBA-15 have shown a reasonable activity and stability. Selectivity of the Ni/SBA-15 catalyst was higher than all other catalysts as indicated by the H<sub>2</sub>/CO ratio. Co/SBA-15 and Co−Ni/Zn−SBA-15 showed a low activity and selectivity. TPD−NH<sub>3</sub> profiles indicated that doping SBA-15 with Ce and/or Zn increased the catalyst acidic sites. Ni/SBA-15 is an excellent potential catalyst for commercial methane dry reforming processes. |
| first_indexed | 2024-12-14T01:44:21Z |
| format | Article |
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| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-14T01:44:21Z |
| publishDate | 2019-05-01 |
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| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-ead09501bc574ef5bb0f3512462459b12022-12-21T23:21:37ZengMDPI AGApplied Sciences2076-34172019-05-0199192610.3390/app9091926app9091926Nanosized Ni/SBA-15 Catalysts for CO<sub>2</sub> Reforming of CH<sub>4</sub>Ahmed A. Ibrahim0Ashraf Amin1Ahmed S. Al-Fatesh2Nadavala Siva Kumar3Samsudeen Olajide Kasim4Abdulrhman S. Al-Awadi5Ahmed M. El-Toni6Ahmed Elhag Abasaeed7Anis H. Fakeeha8Chemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaChemical Eng. & Pilot Plant Department, Eng Res Division, National Research Centre, El Buhouth St., Dokki, 12622 Cairo, EgyptChemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaChemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaChemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaChemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaKing Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451, Saudi ArabiaChemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaChemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi ArabiaNi, Co, and Co−Ni bimetallic catalysts supported over SBA-15 and over SBA-15 doped with Zn or Ce oxides were prepared and tested in a methane dry reforming reaction. The loading of the metals in the catalyst was 5 wt % for either mono or bimetallic catalysts. The prepared catalysts were tested in a continuous-flow fixed-bed reactor at 800 °C under atmospheric pressure. XRD, TPR, TPD, and SEM characterization techniques were employed to investigate the catalytic properties of fresh catalysts. SEM and TGA were used to study the catalytic properties of spent catalysts. A remarkable effect on the reduction properties and catalytic performance of catalysts was observed after adding Zn and Ce. Over an 8 h test, Ni/SBA-15 showed the best activity and stability. The conversion was 90% for CH<sub>4</sub> and CO<sub>2</sub>. Co−Ni/SBA-15 and Co−Ni/Ce−SBA-15 have shown a reasonable activity and stability. Selectivity of the Ni/SBA-15 catalyst was higher than all other catalysts as indicated by the H<sub>2</sub>/CO ratio. Co/SBA-15 and Co−Ni/Zn−SBA-15 showed a low activity and selectivity. TPD−NH<sub>3</sub> profiles indicated that doping SBA-15 with Ce and/or Zn increased the catalyst acidic sites. Ni/SBA-15 is an excellent potential catalyst for commercial methane dry reforming processes.https://www.mdpi.com/2076-3417/9/9/1926catalystCO<sub>2</sub>H<sub>2</sub>methane reformingSBA-15 |
| spellingShingle | Ahmed A. Ibrahim Ashraf Amin Ahmed S. Al-Fatesh Nadavala Siva Kumar Samsudeen Olajide Kasim Abdulrhman S. Al-Awadi Ahmed M. El-Toni Ahmed Elhag Abasaeed Anis H. Fakeeha Nanosized Ni/SBA-15 Catalysts for CO<sub>2</sub> Reforming of CH<sub>4</sub> Applied Sciences catalyst CO<sub>2</sub> H<sub>2</sub> methane reforming SBA-15 |
| title | Nanosized Ni/SBA-15 Catalysts for CO<sub>2</sub> Reforming of CH<sub>4</sub> |
| title_full | Nanosized Ni/SBA-15 Catalysts for CO<sub>2</sub> Reforming of CH<sub>4</sub> |
| title_fullStr | Nanosized Ni/SBA-15 Catalysts for CO<sub>2</sub> Reforming of CH<sub>4</sub> |
| title_full_unstemmed | Nanosized Ni/SBA-15 Catalysts for CO<sub>2</sub> Reforming of CH<sub>4</sub> |
| title_short | Nanosized Ni/SBA-15 Catalysts for CO<sub>2</sub> Reforming of CH<sub>4</sub> |
| title_sort | nanosized ni sba 15 catalysts for co sub 2 sub reforming of ch sub 4 sub |
| topic | catalyst CO<sub>2</sub> H<sub>2</sub> methane reforming SBA-15 |
| url | https://www.mdpi.com/2076-3417/9/9/1926 |
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