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Determining an optimum catalyst for liquid-phase dehydration of methanol to dimethyl ether

Khandan, N ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. DOI: 10.1016/j.apcata.2008.07.029
  3. Publisher: 2008
  4. Abstract:
  5. The liquid-phase dehydration of methanol to dimethyl ether was investigated over various materials including synthetic zeolites, namely, ZSM-5, Y, Mordenite, Ferrierite and Beta as well as silica and alumina. The key characters investigated were the Si/Al ratio and cation exchange. The results showed that the Mordenite zeolite exchanged with H+ exhibited the highest activity in dehydration of methanol. After finding the most active catalyst, the Mordenite zeolite was modified with Cu, Zn, Ni, Al, Zr, Mg and Na via wet-impregnation method to further improve its selectivity, and characterized by AAS, XRD, NH3-TPD, NH3-FT-IR and BET surface area techniques. It was found that these materials affected activity of HM zeolite by changing its acidity. Ultimately, amongst all catalysts studied, Al-modified Mordenite zeolite exhibited optimum activity, selectivity and stability for methanol dehydration to dimethyl ether. Crown Copyright © 2008
  6. Keywords:
  7. Dehydration ; Dewatering ; Ethers ; Liquid phase epitaxy ; Methanol ; Organic compounds ; Silica ; Silicate minerals ; Silicon compounds ; Synthetic fuels ; Cation exchanges ; Dehydration of methanol ; Dimethyl ether ; Ferrierite ; Key characters ; Liquid-phase ; Mordenite ; Mordenite zeolite ; Si/Al ratio ; Synthetic zeolites ; Zeolite ; Zeolites
  8. Source: Applied Catalysis A: General ; Volume 349, Issue 1-2 , 2008 , Pages 6-12 ; 0926860X (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0926860X08004286