2026-04-13T02:11:30Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/990852025-12-04T19:37:07Zcom_2072_1057col_2072_478813col_2072_478917

Ion exchange resins as catalysts for the liquid-phase dehydration of 1-butanol to di-n-butyl ether Pérez-Maciá, María Ángeles Bringué Tomàs, Roger Iborra Urios, Montserrat Tejero Salvador, Xavier Cunill García, Fidel Èters Resines de bescanvi iònic Catàlisi Alcohol butílic Ethers Ion exchange resins Catalysis Butanol 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. 2016-05-31T11:40:26Z 2016-05-31T11:40:26Z 2014-05-24 2016-05-31T11:40:31Z info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion 0926-860X https://hdl.handle.net/2445/99085 641825 eng Versió postprint del document publicat a: http://dx.doi.org/10.1016/j.apcata.2014.05.017 Applied Catalysis A-General, 2014, vol. 482, p. 38-48 http://dx.doi.org/10.1016/j.apcata.2014.05.017 (c) Elsevier B.V., 2014 info:eu-repo/semantics/openAccess 11 p. application/pdf Elsevier B.V. Articles publicats en revistes (Enginyeria Química i Química Analítica)