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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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Main Authors: Kusmiyati, Kusmiyati, Saidina Amin, Nor Aishah
Format: Article
Language:English
Published: Springer 2005
Subjects:
T Technology (General)
Online Access:http://eprints.utm.my/id/eprint/5546/1/Kusmiyati2005_DualEffectsOfSupportedWCatalysts.pdf
http://eprints.utm.my/id/eprint/5546/
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spelling my.utm.55462010-06-01T15:32:05Z http://eprints.utm.my/id/eprint/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/id/eprint/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
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic T Technology (General)
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
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.
format Article
author Kusmiyati, Kusmiyati
Saidina Amin, Nor Aishah
author_facet Kusmiyati, Kusmiyati
Saidina Amin, Nor Aishah
author_sort Kusmiyati, Kusmiyati
title 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_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_sort dual effects of supported w catalysts for dehydroaromatization of methane in the absence of oxygen
publisher Springer
publishDate 2005
url http://eprints.utm.my/id/eprint/5546/1/Kusmiyati2005_DualEffectsOfSupportedWCatalysts.pdf
http://eprints.utm.my/id/eprint/5546/
_version_ 1643644352531005440
score 13.211869

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