Hydrogen production from CH4 dry reforming over bimetallic Ni–Co/Al2O3 catalyst
Bimetallic 5%Ni–10%Co/Al2O3 catalyst was synthesized using impregnation method and evaluated for methane dry reforming reaction at different reaction temperatures. NiO, Co3O4 and spinal metal aluminates, namely, CoAl2O4 and NiAl2O4 phases were formed on γ-Al2O3 support surface during calcination pro...
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| Format: | Article |
| Language: | English English |
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Elsevier Ltd.
2018
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| Online Access: | http://umpir.ump.edu.my/id/eprint/22359/1/Hydrogen%20production%20from%20CH4%20dry%20reforming%20over%20bimetallic%20Ni%E2%80%93Co-Al2%20O3%20catalyst.pdf http://umpir.ump.edu.my/id/eprint/22359/7/Hydrogen%20production%20from%20CH4%20dry%20reforming%20over%20bimetallic%20Ni%E2%80%93CoAl2O3%20catalyst.pdf |
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| author | Siang, Tan Ji Singh, Sharanjit Omoregbe, Osaze Bach, Long Giang Phuc, Nguyen Huu Huy Vo, Dai-Viet N. |
| author_facet | Siang, Tan Ji Singh, Sharanjit Omoregbe, Osaze Bach, Long Giang Phuc, Nguyen Huu Huy Vo, Dai-Viet N. |
| author_sort | Siang, Tan Ji |
| collection | UMP |
| description | Bimetallic 5%Ni–10%Co/Al2O3 catalyst was synthesized using impregnation method and evaluated for methane dry reforming reaction at different reaction temperatures. NiO, Co3O4 and spinal metal aluminates, namely, CoAl2O4 and NiAl2O4 phases were formed on γ-Al2O3 support surface during calcination process. 5%Ni–10%Co/Al2O3 catalyst exhibited reasonable surface area of 86.93 m2 g−1 with small crystallite dimension of less than 10 nm suggesting that both Co3O4 and NiO phases were finely dispersed on the surface of support in agreement with results from scanning electron microscopy (SEM) measurement. Temperature-programmed calcination measurement indicates the complete thermal decomposition and oxidation of metal precursors, viz. Ni(NO3)2 and Co(NO3)2 to metal oxides and metal aluminates at below 700 K. Both CH4 and CO2 conversions were stable over a period of 4 h on-stream and attained an optimum at about 67% and 71%, respectively at 973 K whilst H2 selectivity and yield were higher than 49%. The ratio of H2/CO was always less than unity for all runs indicating the presence of reverse water–gas shift reaction. The activation energy for CH4 and CO2 consumption was computed as 55.60 and 40.25 kJ mol−1, correspondingly. SEM micrograph of spent catalyst detected the formation of whisker-like carbon on catalyst surface whilst D and G bands characteristic for the appearance of amorphous and graphitic carbons in this order were observed on surface of used catalyst by Raman spectroscopy analysis. Additionally, the percentage of filamentous carbon was greater than that of graphitic carbon. |
| first_indexed | 2024-03-06T12:26:51Z |
| format | Article |
| id | UMPir22359 |
| institution | Universiti Malaysia Pahang |
| language | English English |
| last_indexed | 2024-03-06T12:26:51Z |
| publishDate | 2018 |
| publisher | Elsevier Ltd. |
| record_format | dspace |
| spelling | UMPir223592019-10-03T07:42:42Z http://umpir.ump.edu.my/id/eprint/22359/ Hydrogen production from CH4 dry reforming over bimetallic Ni–Co/Al2O3 catalyst Siang, Tan Ji Singh, Sharanjit Omoregbe, Osaze Bach, Long Giang Phuc, Nguyen Huu Huy Vo, Dai-Viet N. TP Chemical technology Bimetallic 5%Ni–10%Co/Al2O3 catalyst was synthesized using impregnation method and evaluated for methane dry reforming reaction at different reaction temperatures. NiO, Co3O4 and spinal metal aluminates, namely, CoAl2O4 and NiAl2O4 phases were formed on γ-Al2O3 support surface during calcination process. 5%Ni–10%Co/Al2O3 catalyst exhibited reasonable surface area of 86.93 m2 g−1 with small crystallite dimension of less than 10 nm suggesting that both Co3O4 and NiO phases were finely dispersed on the surface of support in agreement with results from scanning electron microscopy (SEM) measurement. Temperature-programmed calcination measurement indicates the complete thermal decomposition and oxidation of metal precursors, viz. Ni(NO3)2 and Co(NO3)2 to metal oxides and metal aluminates at below 700 K. Both CH4 and CO2 conversions were stable over a period of 4 h on-stream and attained an optimum at about 67% and 71%, respectively at 973 K whilst H2 selectivity and yield were higher than 49%. The ratio of H2/CO was always less than unity for all runs indicating the presence of reverse water–gas shift reaction. The activation energy for CH4 and CO2 consumption was computed as 55.60 and 40.25 kJ mol−1, correspondingly. SEM micrograph of spent catalyst detected the formation of whisker-like carbon on catalyst surface whilst D and G bands characteristic for the appearance of amorphous and graphitic carbons in this order were observed on surface of used catalyst by Raman spectroscopy analysis. Additionally, the percentage of filamentous carbon was greater than that of graphitic carbon. Elsevier Ltd. 2018 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/22359/1/Hydrogen%20production%20from%20CH4%20dry%20reforming%20over%20bimetallic%20Ni%E2%80%93Co-Al2%20O3%20catalyst.pdf pdf en http://umpir.ump.edu.my/id/eprint/22359/7/Hydrogen%20production%20from%20CH4%20dry%20reforming%20over%20bimetallic%20Ni%E2%80%93CoAl2O3%20catalyst.pdf Siang, Tan Ji and Singh, Sharanjit and Omoregbe, Osaze and Bach, Long Giang and Phuc, Nguyen Huu Huy and Vo, Dai-Viet N. (2018) Hydrogen production from CH4 dry reforming over bimetallic Ni–Co/Al2O3 catalyst. Journal of the Energy Institute, 91 (5). pp. 683-694. ISSN 1743-9671. (Published) https://doi.org/10.1016/j.joei.2017.06.001 10.1016/j.joei.2017.06.001 |
| spellingShingle | TP Chemical technology Siang, Tan Ji Singh, Sharanjit Omoregbe, Osaze Bach, Long Giang Phuc, Nguyen Huu Huy Vo, Dai-Viet N. Hydrogen production from CH4 dry reforming over bimetallic Ni–Co/Al2O3 catalyst |
| title | Hydrogen production from CH4 dry reforming over bimetallic Ni–Co/Al2O3 catalyst |
| title_full | Hydrogen production from CH4 dry reforming over bimetallic Ni–Co/Al2O3 catalyst |
| title_fullStr | Hydrogen production from CH4 dry reforming over bimetallic Ni–Co/Al2O3 catalyst |
| title_full_unstemmed | Hydrogen production from CH4 dry reforming over bimetallic Ni–Co/Al2O3 catalyst |
| title_short | Hydrogen production from CH4 dry reforming over bimetallic Ni–Co/Al2O3 catalyst |
| title_sort | hydrogen production from ch4 dry reforming over bimetallic ni co al2o3 catalyst |
| topic | TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/22359/1/Hydrogen%20production%20from%20CH4%20dry%20reforming%20over%20bimetallic%20Ni%E2%80%93Co-Al2%20O3%20catalyst.pdf http://umpir.ump.edu.my/id/eprint/22359/7/Hydrogen%20production%20from%20CH4%20dry%20reforming%20over%20bimetallic%20Ni%E2%80%93CoAl2O3%20catalyst.pdf |
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