Highly Active W-H2SO4/HZSM-5 Catalyst for Direct Conversion of Methane into Aromatic

Kusmiyati Kusmiyati; N. A. S. Amin; W. A. Siswanto

doi:10.9767/bcrec.2.2-3.7.32-36

DOI: https://doi.org/10.9767/bcrec.2.2-3.7.32-36

Highly Active W-H2SO4/HZSM-5 Catalyst for Direct Conversion of Methane into Aromatic

Kusmiyati Kusmiyati¹ , N. A. S. Amin², W. A. Siswanto¹

¹Department of Chemical Engineering, Muhammadiyah University of Surakarta, Pabelan, Surakarta, Indonesia

²Faculty of Chemical & Natural Resources Engineering, Universiti Teknologi Malaysia, Johor Bahru, Malaysia

Received: 18 Apr 2007; Revised: 15 Oct 2007; Accepted: 15 Oct 2007; Published: 15 Oct 2007.

Editor(s): Istadi Istadi

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Abstract

Dehydroaromatization of methane (DHAM) under non oxidative condition was studied over tungsten loaded HZSM-5 catalysts to produce aromatic hydrocarbons. The catalysts were prepared by impregnation method using different conditions : in neutral and acidified solution. The activity of W/HZSM-5 prepared by neutral solution and W-H2SO4/HZSM-5 prepared in acidified condition were compared. The results showed that the optimum activity of W-H2SO4/HZSM-5 catalyst exceeded that of W/HZSM-5 catalyst. The effect of Si/Al ratio of W-H2SO4/HZSM-5 catalyst was also studied. The W-H2SO4/HZSM-5 catalyst with Si/Al ratio = 0 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. © 2007 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0)

Keywords: methane; aromatization; W/HZSM-5

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Section: Original Research Articles

Language : EN

In 2007: BCREC: Volume 2 Issues 2-3 Year 2007 (October 2007)

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