Study of Co-and Ni-MCM-41 supported catalysts and effects of Pt promoter addition on carbon dioxide reforming of methane
The catalytic performances of promoter-modified and un-modified bimetallic catalysts in CO2 reforming of methane were studied. Co and Ni metals were incorporated into mesoporous MCM-41 by direct hydrothermal synthesis, while promoter Pt was loaded by conventional wet impregnation. The structures and...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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2010
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| Online Access: | http://hdl.handle.net/10356/40000 |
| _version_ | 1826118411235622912 |
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| author | Lim, Yvonne Yi Wen. |
| author2 | Yang Yanhui |
| author_facet | Yang Yanhui Lim, Yvonne Yi Wen. |
| author_sort | Lim, Yvonne Yi Wen. |
| collection | NTU |
| description | The catalytic performances of promoter-modified and un-modified bimetallic catalysts in CO2 reforming of methane were studied. Co and Ni metals were incorporated into mesoporous MCM-41 by direct hydrothermal synthesis, while promoter Pt was loaded by conventional wet impregnation. The structures and compositions of the fresh catalysts were characterized using various methods including X-ray powder diffraction, nitrogen physisorption and temperature programmed reduction. Monometallic Ni-based catalyst exhibited higher catalytic activity as compared to the Co counterpart over the entire temperature range tested. Subsequent Pt introduction improved the activity of both Co- and Ni-MCM-41, with Pt/Ni-MCM-41 leading ahead of the Co catalyst. Long-term stability of the catalysts was also investigated. Monometallic Co- and Ni-MCM-41 deactivated rapidly within the first 12 hours of reaction. Pt-impregnated bimetallic catalysts exhibited a distinctively improved stability in comparison to the monometallic catalysts, with low carbon deposition as characterized by thermogravimetric analysis. Synergetic interaction of Pt-Co and Pt-Ni alloys was proposed to be the cause of the lower carbon deposition which in turn ensured a stable catalytic level at an elevated temperature over a substantial period of time. The Pt-modified bimetallic catalysts, especially Pt/Ni-MCM-41, demonstrated excellent catalytic activity with high carbon resistivity and could prove to be promising catalysts for the CO2 reforming of methane. |
| first_indexed | 2024-10-01T04:43:17Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/40000 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:43:17Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | ntu-10356/400002023-03-03T15:35:20Z Study of Co-and Ni-MCM-41 supported catalysts and effects of Pt promoter addition on carbon dioxide reforming of methane Lim, Yvonne Yi Wen. Yang Yanhui School of Chemical and Biomedical Engineering DRNTU::Engineering::Chemical engineering::Chemical processes The catalytic performances of promoter-modified and un-modified bimetallic catalysts in CO2 reforming of methane were studied. Co and Ni metals were incorporated into mesoporous MCM-41 by direct hydrothermal synthesis, while promoter Pt was loaded by conventional wet impregnation. The structures and compositions of the fresh catalysts were characterized using various methods including X-ray powder diffraction, nitrogen physisorption and temperature programmed reduction. Monometallic Ni-based catalyst exhibited higher catalytic activity as compared to the Co counterpart over the entire temperature range tested. Subsequent Pt introduction improved the activity of both Co- and Ni-MCM-41, with Pt/Ni-MCM-41 leading ahead of the Co catalyst. Long-term stability of the catalysts was also investigated. Monometallic Co- and Ni-MCM-41 deactivated rapidly within the first 12 hours of reaction. Pt-impregnated bimetallic catalysts exhibited a distinctively improved stability in comparison to the monometallic catalysts, with low carbon deposition as characterized by thermogravimetric analysis. Synergetic interaction of Pt-Co and Pt-Ni alloys was proposed to be the cause of the lower carbon deposition which in turn ensured a stable catalytic level at an elevated temperature over a substantial period of time. The Pt-modified bimetallic catalysts, especially Pt/Ni-MCM-41, demonstrated excellent catalytic activity with high carbon resistivity and could prove to be promising catalysts for the CO2 reforming of methane. Bachelor of Engineering (Chemical and Biomolecular Engineering) 2010-06-09T01:58:56Z 2010-06-09T01:58:56Z 2010 2010 Final Year Project (FYP) http://hdl.handle.net/10356/40000 en Nanyang Technological University 51 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Chemical engineering::Chemical processes Lim, Yvonne Yi Wen. Study of Co-and Ni-MCM-41 supported catalysts and effects of Pt promoter addition on carbon dioxide reforming of methane |
| title | Study of Co-and Ni-MCM-41 supported catalysts and effects of Pt promoter addition on carbon dioxide reforming of methane |
| title_full | Study of Co-and Ni-MCM-41 supported catalysts and effects of Pt promoter addition on carbon dioxide reforming of methane |
| title_fullStr | Study of Co-and Ni-MCM-41 supported catalysts and effects of Pt promoter addition on carbon dioxide reforming of methane |
| title_full_unstemmed | Study of Co-and Ni-MCM-41 supported catalysts and effects of Pt promoter addition on carbon dioxide reforming of methane |
| title_short | Study of Co-and Ni-MCM-41 supported catalysts and effects of Pt promoter addition on carbon dioxide reforming of methane |
| title_sort | study of co and ni mcm 41 supported catalysts and effects of pt promoter addition on carbon dioxide reforming of methane |
| topic | DRNTU::Engineering::Chemical engineering::Chemical processes |
| url | http://hdl.handle.net/10356/40000 |
| work_keys_str_mv | AT limyvonneyiwen studyofcoandnimcm41supportedcatalystsandeffectsofptpromoteradditiononcarbondioxidereformingofmethane |