Dual effects of supported W catalysts for dehydroaromatization of methane in the absence of oxygen
The screening of a series of W-based catalysts on different supports i.e. HZSM-5, Hβ, USY and Al2O3 for the dehydroaromatization of methane (DHAM) revealed that HZSM-5 emerged as the best support. Next, the performance of W/ HZSM-5 and W-H2SO4/HZSM-5 catalysts for the DHAM reaction was compared to...
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| Language: | English |
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Springer
2005
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| Online Access: | http://eprints.utm.my/5546/ http://eprints.utm.my/5546/1/Kusmiyati2005_DualEffectsOfSupportedWCatalysts.pdf |
| _version_ | 1848891078548127744 |
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| author | Kusmiyati, Kusmiyati Saidina Amin, Nor Aishah |
| author_facet | Kusmiyati, Kusmiyati Saidina Amin, Nor Aishah |
| author_sort | Kusmiyati, Kusmiyati |
| building | UTeM Institutional Repository |
| collection | Online Access |
| description | The screening of a series of W-based catalysts on different supports i.e. HZSM-5, Hβ, USY and Al2O3 for the dehydroaromatization of methane (DHAM) revealed that HZSM-5 emerged as the best support. Next, the performance of W/ HZSM-5 and W-H2SO4/HZSM-5 catalysts for the DHAM reaction was compared to study the effect of acidic treatment in the impregnation method. The results showed that the optimum activity of W-H2SO4/HZSM-5 catalyst exceeded that of W/HZSM-5 catalyst. Finally, the influence of Si/AI ratio in the W-H2SO4/HZSM-5 catalyst was studied and the catalyst with Si/Al ratio = 30 was found to be the most promising for the DHAM reaction. The remarkable activity of the catalyst is attributed to the presence of dual effects: suitable content of octahedral polymeric and tetrahedral monomeric tungstate species accompanied by proper amount and strength of acid sites in the catalyst. |
| first_indexed | 2025-11-15T20:52:15Z |
| format | Article |
| id | utm-5546 |
| institution | Universiti Teknologi Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T20:52:15Z |
| publishDate | 2005 |
| publisher | Springer |
| recordtype | eprints |
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| spelling | utm-55462010-06-01T15:32:05Z http://eprints.utm.my/5546/ Dual effects of supported W catalysts for dehydroaromatization of methane in the absence of oxygen Kusmiyati, Kusmiyati Saidina Amin, Nor Aishah T Technology (General) The screening of a series of W-based catalysts on different supports i.e. HZSM-5, Hβ, USY and Al2O3 for the dehydroaromatization of methane (DHAM) revealed that HZSM-5 emerged as the best support. Next, the performance of W/ HZSM-5 and W-H2SO4/HZSM-5 catalysts for the DHAM reaction was compared to study the effect of acidic treatment in the impregnation method. The results showed that the optimum activity of W-H2SO4/HZSM-5 catalyst exceeded that of W/HZSM-5 catalyst. Finally, the influence of Si/AI ratio in the W-H2SO4/HZSM-5 catalyst was studied and the catalyst with Si/Al ratio = 30 was found to be the most promising for the DHAM reaction. The remarkable activity of the catalyst is attributed to the presence of dual effects: suitable content of octahedral polymeric and tetrahedral monomeric tungstate species accompanied by proper amount and strength of acid sites in the catalyst. Springer 2005 Article PeerReviewed application/pdf en http://eprints.utm.my/5546/1/Kusmiyati2005_DualEffectsOfSupportedWCatalysts.pdf Kusmiyati, Kusmiyati and Saidina Amin, Nor Aishah (2005) Dual effects of supported W catalysts for dehydroaromatization of methane in the absence of oxygen. Catalysis Letters, 102 (1-2). pp. 69-78. ISSN 1011-372X |
| spellingShingle | T Technology (General) Kusmiyati, Kusmiyati Saidina Amin, Nor Aishah Dual effects of supported W catalysts for dehydroaromatization of methane in the absence of oxygen |
| title | Dual effects of supported W catalysts for dehydroaromatization of methane in the absence of oxygen |
| title_full | Dual effects of supported W catalysts for dehydroaromatization of methane in the absence of oxygen |
| title_fullStr | Dual effects of supported W catalysts for dehydroaromatization of methane in the absence of oxygen |
| title_full_unstemmed | Dual effects of supported W catalysts for dehydroaromatization of methane in the absence of oxygen |
| title_short | Dual effects of supported W catalysts for dehydroaromatization of methane in the absence of oxygen |
| title_sort | dual effects of supported w catalysts for dehydroaromatization of methane in the absence of oxygen |
| topic | T Technology (General) |
| url | http://eprints.utm.my/5546/ http://eprints.utm.my/5546/1/Kusmiyati2005_DualEffectsOfSupportedWCatalysts.pdf |