Methanol dehydration over commercially available zeolites: Effect of hydrophobicity

Abstract : Commercially available H-Y (Faujasite) and H-ZSM5 zeolites with various SiO2/Al2O3 ratio (from 5 to 280) were used as acid catalyst for vapour phase methanol dehydration in mild condition (T\textless250 degrees C; P\textless5 bar). All tested catalysts were giving very high selectivity while conversion was highly dependent on both acid content and surface hydrophobicity expressed as Weitkamp hydrophobicity index (HI index). For H-Y and H-ZSM5 zeolites, a correlation was found between catalysts productivity expressed in kg of DME per hour per concentration of acid sites and HI index. Such results could rise to the design of more efficient catalyst for gas-phase DME synthesis from methanol.
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Submitted on : Thursday, November 22, 2018 - 10:11:56 AM
Last modification on : Wednesday, April 10, 2019 - 3:48:07 PM

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L. Vanoye, A. Favre-Reguillon, P. Munno, J.F. Rodríguez, S. Dupuy, et al.. Methanol dehydration over commercially available zeolites: Effect of hydrophobicity. Catalysis Today, Elsevier, 2013, 215, pp.239 - 242. ⟨10.1016/j.cattod.2013.01.012⟩. ⟨hal-01930581⟩

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