High Active Co/Mg1-xCex3+O Catalyst: Effects of Metal-Support Promoter Interactions on CO2 Reforming of CH4 Reaction
Co/Mg1−XCe3+XO (x = 0, 0.03, 0.07, 0.15; 1 wt% cobalt each) catalysts for the dry reforming of methane (DRM) reaction were prepared using the co-precipitation method with K2CO3 as precipitant. Characterization of the catalysts was achieved by X-ray diffraction (XRD), X-ray fluorescence spectroscopy...
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| Format: | Article |
| Language: | English English |
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Universitas Diponegoro
2021
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| Online Access: | https://eprints.ums.edu.my/id/eprint/32584/1/High%20Active.pdf https://eprints.ums.edu.my/id/eprint/32584/3/High%20active%20%20_ABSTRACT.pdf |
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| author | Faris A. J. Al-Doghachi Diyar M. A. Murad Huda S. Al-Niaeem Salam H. H. Al-Jaberi Surahim Mohamad Yap, Taufiq Yun Hin |
| author_facet | Faris A. J. Al-Doghachi Diyar M. A. Murad Huda S. Al-Niaeem Salam H. H. Al-Jaberi Surahim Mohamad Yap, Taufiq Yun Hin |
| author_sort | Faris A. J. Al-Doghachi |
| collection | UMS |
| description | Co/Mg1−XCe3+XO (x = 0, 0.03, 0.07, 0.15; 1 wt% cobalt each) catalysts for the dry reforming of methane (DRM) reaction were prepared using the co-precipitation method with K2CO3 as precipitant. Characterization of the catalysts was achieved by X-ray diffraction (XRD), X-ray fluorescence spectroscopy (XRF), X-ray photoelectron spectroscopy (XPS), temperature programmed reduction (H2-TPR), Brunauer–Emmett–Teller (BET), transmission electron microscopy (TEM), and thermal gravimetric analysis (TGA). The role of several reactant and catalyst concentrations, and reaction temperatures (700–900 °C) on the catalytic performance of the DRM reaction was measured in a tubular fixed-bed reactor under atmospheric pressure at various CH4/CO2 concentration ratios (1:1 to 2:1). Using X-ray diffraction, a surface area of 19.2 m2.g−1 was exhibited by the Co/Mg0.85Ce3+0.15O catalyst and MgO phase (average crystallite size of 61.4 nm) was detected on the surface of the catalyst. H2 temperature programmed reaction revealed a reduction of CoO particles to metallic Co0 phase. The catalytic stability of the Co/Mg0.85Ce3+0.15O catalyst was achieved for 200 h on-stream at 900 °C for the 1:1 CH4:CO2 ratio with an H2/CO ratio of 1.0 and a CH4, CO2 conversions of 75% and 86%, respectively. In the present study, the conversion of CH4 was improved (75%–84%) when conducting the experiment at a lower flow of oxygen (1.25%). Finally, the deposition of carbon on the spent catalysts was analyzed using TEM and Temperature programmed oxidation-mass spectroscopy (TPO-MS) following 200 h under an oxygen stream. Better anti-coking activity of the reduced catalyst was observed by both, TEM, and TPO-MS analysis. |
| first_indexed | 2024-03-06T03:15:59Z |
| format | Article |
| id | ums.eprints-32584 |
| institution | Universiti Malaysia Sabah |
| language | English English |
| last_indexed | 2024-03-06T03:15:59Z |
| publishDate | 2021 |
| publisher | Universitas Diponegoro |
| record_format | dspace |
| spelling | ums.eprints-325842022-05-18T04:22:37Z https://eprints.ums.edu.my/id/eprint/32584/ High Active Co/Mg1-xCex3+O Catalyst: Effects of Metal-Support Promoter Interactions on CO2 Reforming of CH4 Reaction Faris A. J. Al-Doghachi Diyar M. A. Murad Huda S. Al-Niaeem Salam H. H. Al-Jaberi Surahim Mohamad Yap, Taufiq Yun Hin TP1-1185 Chemical technology Co/Mg1−XCe3+XO (x = 0, 0.03, 0.07, 0.15; 1 wt% cobalt each) catalysts for the dry reforming of methane (DRM) reaction were prepared using the co-precipitation method with K2CO3 as precipitant. Characterization of the catalysts was achieved by X-ray diffraction (XRD), X-ray fluorescence spectroscopy (XRF), X-ray photoelectron spectroscopy (XPS), temperature programmed reduction (H2-TPR), Brunauer–Emmett–Teller (BET), transmission electron microscopy (TEM), and thermal gravimetric analysis (TGA). The role of several reactant and catalyst concentrations, and reaction temperatures (700–900 °C) on the catalytic performance of the DRM reaction was measured in a tubular fixed-bed reactor under atmospheric pressure at various CH4/CO2 concentration ratios (1:1 to 2:1). Using X-ray diffraction, a surface area of 19.2 m2.g−1 was exhibited by the Co/Mg0.85Ce3+0.15O catalyst and MgO phase (average crystallite size of 61.4 nm) was detected on the surface of the catalyst. H2 temperature programmed reaction revealed a reduction of CoO particles to metallic Co0 phase. The catalytic stability of the Co/Mg0.85Ce3+0.15O catalyst was achieved for 200 h on-stream at 900 °C for the 1:1 CH4:CO2 ratio with an H2/CO ratio of 1.0 and a CH4, CO2 conversions of 75% and 86%, respectively. In the present study, the conversion of CH4 was improved (75%–84%) when conducting the experiment at a lower flow of oxygen (1.25%). Finally, the deposition of carbon on the spent catalysts was analyzed using TEM and Temperature programmed oxidation-mass spectroscopy (TPO-MS) following 200 h under an oxygen stream. Better anti-coking activity of the reduced catalyst was observed by both, TEM, and TPO-MS analysis. Universitas Diponegoro 2021 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/32584/1/High%20Active.pdf text en https://eprints.ums.edu.my/id/eprint/32584/3/High%20active%20%20_ABSTRACT.pdf Faris A. J. Al-Doghachi and Diyar M. A. Murad and Huda S. Al-Niaeem and Salam H. H. Al-Jaberi and Surahim Mohamad and Yap, Taufiq Yun Hin (2021) High Active Co/Mg1-xCex3+O Catalyst: Effects of Metal-Support Promoter Interactions on CO2 Reforming of CH4 Reaction. Bulletin of Chemical Reaction Engineering and Catalysis, 16. pp. 97-110. ISSN 1978-2993 https://ejournal2.undip.ac.id/index.php/bcrec/article/view/9969/5244 https://doi.org/10.9767/bcrec.16.1.9969.97-110 https://doi.org/10.9767/bcrec.16.1.9969.97-110 |
| spellingShingle | TP1-1185 Chemical technology Faris A. J. Al-Doghachi Diyar M. A. Murad Huda S. Al-Niaeem Salam H. H. Al-Jaberi Surahim Mohamad Yap, Taufiq Yun Hin High Active Co/Mg1-xCex3+O Catalyst: Effects of Metal-Support Promoter Interactions on CO2 Reforming of CH4 Reaction |
| title | High Active Co/Mg1-xCex3+O Catalyst: Effects of Metal-Support Promoter Interactions on CO2 Reforming of CH4 Reaction |
| title_full | High Active Co/Mg1-xCex3+O Catalyst: Effects of Metal-Support Promoter Interactions on CO2 Reforming of CH4 Reaction |
| title_fullStr | High Active Co/Mg1-xCex3+O Catalyst: Effects of Metal-Support Promoter Interactions on CO2 Reforming of CH4 Reaction |
| title_full_unstemmed | High Active Co/Mg1-xCex3+O Catalyst: Effects of Metal-Support Promoter Interactions on CO2 Reforming of CH4 Reaction |
| title_short | High Active Co/Mg1-xCex3+O Catalyst: Effects of Metal-Support Promoter Interactions on CO2 Reforming of CH4 Reaction |
| title_sort | high active co mg1 xcex3 o catalyst effects of metal support promoter interactions on co2 reforming of ch4 reaction |
| topic | TP1-1185 Chemical technology |
| url | https://eprints.ums.edu.my/id/eprint/32584/1/High%20Active.pdf https://eprints.ums.edu.my/id/eprint/32584/3/High%20active%20%20_ABSTRACT.pdf |
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