Dehydration of methanol to Dimethyl ether employing modified H-ZSM-5 catalysts
Publish place: 5th International Congress on Chemical Engineering
Publish Year: 1386
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ICHEC05_315
تاریخ نمایه سازی: 7 بهمن 1386
Abstract:
Synthesis of Dimethyl ether from methanol was investigated over H-ZSM-5 and promoted 5 catalysts using Mg, Na, Zr, Al and Zn component. All samples were characterized H-ZSM- by XRD and TPD analyses. Results of TPD analysis indicated that the amount of weakly strength acid sites increased on the surface of Na, Zn and Mg modified H-ZSM-5, while the amount of medium strength acid sites increased on the surface of Zr and Al modified H-ZSM-5. Zr- modified H-ZSM-5 zeolite exhibited higher activity and selectivity than other materials. It was concluded that production of dimethyl ether from methanol was occurred on acidic sites with medium strength.
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Authors
Nahid Khandan
Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
Mohammad Kazemeini
Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
Mahmoud Aghaziarati
Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran