Title of article
Highly Active W-H2SO4/HZSM-5 Catalyst for Direct Conversion of Methane into Aromatic
Author/Authors
Kusmiyati Muhammadiyah University of Surakarta - Department of Chemical Engineering, Indonesia , Amin, N.A.S. Universiti Teknologi Malaysia - Faculty of Chemical Natural Resources Engineering , Siswanto, W.A. Muhammadiyah University of Surakarta - Department of Chemical Engineering, Indonesia
From page
32
To page
36
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 = 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.
Keywords
methane , aromatization , W , HZSM , 5
Journal title
Bulletin of Chemical Reaction Engineering & Catalysis
Journal title
Bulletin of Chemical Reaction Engineering & Catalysis
Record number
2672035
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