Title:
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Ion exchange resins as catalysts for the liquid-phase dehydration of 1-butanol to di-n-butyl ether
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Author:
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Pérez-Maciá, María Ángeles; Bringue Tomás, Roger; Iborra Urios, Montserrat; Tejero Salvador, Xavier; Cunill García, Fidel
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Other authors:
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Universitat de Barcelona |
Abstract:
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This work reports the production of di-n-butyl ether (DNBE) by means of 1-butanol dehydration in the liquid phase on acidic ion-exchange resins. Dehydration experiments were performed at 150 ºC and 40 bar on 13 styrene-codivinylbenzene ion exchangers of different morphology. By comparing 1-butanol conversions to DNBE and initial reaction rates it is concluded that oversulfonated resins are the most active catalysts for 1-butanol dehydration reaction whereas gel-type resins that swell significantly in the reaction medium as well as the macroreticular thermostable resin Amberlyst-70 are the most selective to DNBE. The highest DNBE yield was achieved on Amberlyst 36. The influence of typical 1-butanol impurities on the dehydration reaction were also investigated showing that the presence of 2-methyl-1-propanol (isobutanol) enhances the formation of branched ethers such as 1-(1-methylpropoxy) butane and 1-(2-methylpropoxy) butane, whereas the presence of ethanol and acetone yields ethyl butyl ether and, to a much lesser extent, diethyl ether. |
Subject(s):
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-Èters -Resines de bescanvi iònic -Catàlisi -Alcohol butílic -Ethers -Ion exchange resins -Catalysis -Butanol |
Rights:
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(c) Elsevier B.V., 2014
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Document type:
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Article Article - Accepted version |
Published by:
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Elsevier B.V.
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