Synthesis of carbon nanotubes by CCVD of natural gas using hydrotreating catalysts
Carbon nanotubes have been successfully synthesized using the catalytic chemical vapor deposition (CCVD) technique over typical refining hydrotreating catalysts (hydrodesulfurization and hydrodenitrogenation) containing Ni–Mo and Co–Mo supported on Al2O3 catalysts at 700°C in a fixed bed horizontal...
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| Format: | Article |
| Language: | English |
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Egyptian Petroleum Research Institute
2012-12-01
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| Series: | Egyptian Journal of Petroleum |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1110062112000372 |
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| author | Ahmed E. Awadallah Sohair M. Abdel-Hamid Doaa S. El-Desouki Ateyya A. Aboul-Enein Ahmed K. Aboul-Gheit |
| author_facet | Ahmed E. Awadallah Sohair M. Abdel-Hamid Doaa S. El-Desouki Ateyya A. Aboul-Enein Ahmed K. Aboul-Gheit |
| author_sort | Ahmed E. Awadallah |
| collection | DOAJ |
| description | Carbon nanotubes have been successfully synthesized using the catalytic chemical vapor deposition (CCVD) technique over typical refining hydrotreating catalysts (hydrodesulfurization and hydrodenitrogenation) containing Ni–Mo and Co–Mo supported on Al2O3 catalysts at 700°C in a fixed bed horizontal reactor using natural gas as a carbon source. The catalysts and the as-grown CNTs were characterized by transmission electron microscopy, HRTEM, X-ray diffraction patterns, EDX and TGA–DTG. The obtained data clarified that the Ni–Mo catalyst gives higher yield, higher purity and selectivity for CNTs compared to Co–Mo catalyst. XRD, TEM and TGA reveal also that the Ni–Mo catalyst produces mostly CNTs with different diameters whereas the Co–Mo catalyst produces largely amorphous carbon. |
| format | Article |
| id | doaj-art-06f0958fc24e412cadbe3160b394cd49 |
| institution | Kabale University |
| issn | 1110-0621 |
| language | English |
| publishDate | 2012-12-01 |
| publisher | Egyptian Petroleum Research Institute |
| record_format | Article |
| series | Egyptian Journal of Petroleum |
| spelling | doaj-art-06f0958fc24e412cadbe3160b394cd492025-08-20T03:55:24ZengEgyptian Petroleum Research InstituteEgyptian Journal of Petroleum1110-06212012-12-0121210110710.1016/j.ejpe.2012.11.005Synthesis of carbon nanotubes by CCVD of natural gas using hydrotreating catalystsAhmed E. AwadallahSohair M. Abdel-HamidDoaa S. El-DesoukiAteyya A. Aboul-EneinAhmed K. Aboul-GheitCarbon nanotubes have been successfully synthesized using the catalytic chemical vapor deposition (CCVD) technique over typical refining hydrotreating catalysts (hydrodesulfurization and hydrodenitrogenation) containing Ni–Mo and Co–Mo supported on Al2O3 catalysts at 700°C in a fixed bed horizontal reactor using natural gas as a carbon source. The catalysts and the as-grown CNTs were characterized by transmission electron microscopy, HRTEM, X-ray diffraction patterns, EDX and TGA–DTG. The obtained data clarified that the Ni–Mo catalyst gives higher yield, higher purity and selectivity for CNTs compared to Co–Mo catalyst. XRD, TEM and TGA reveal also that the Ni–Mo catalyst produces mostly CNTs with different diameters whereas the Co–Mo catalyst produces largely amorphous carbon.http://www.sciencedirect.com/science/article/pii/S1110062112000372Carbon nanotubesCCVDHydrotreatingNiCoMoAlumina |
| spellingShingle | Ahmed E. Awadallah Sohair M. Abdel-Hamid Doaa S. El-Desouki Ateyya A. Aboul-Enein Ahmed K. Aboul-Gheit Synthesis of carbon nanotubes by CCVD of natural gas using hydrotreating catalysts Egyptian Journal of Petroleum Carbon nanotubes CCVD Hydrotreating Ni Co Mo Alumina |
| title | Synthesis of carbon nanotubes by CCVD of natural gas using hydrotreating catalysts |
| title_full | Synthesis of carbon nanotubes by CCVD of natural gas using hydrotreating catalysts |
| title_fullStr | Synthesis of carbon nanotubes by CCVD of natural gas using hydrotreating catalysts |
| title_full_unstemmed | Synthesis of carbon nanotubes by CCVD of natural gas using hydrotreating catalysts |
| title_short | Synthesis of carbon nanotubes by CCVD of natural gas using hydrotreating catalysts |
| title_sort | synthesis of carbon nanotubes by ccvd of natural gas using hydrotreating catalysts |
| topic | Carbon nanotubes CCVD Hydrotreating Ni Co Mo Alumina |
| url | http://www.sciencedirect.com/science/article/pii/S1110062112000372 |
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