Casas Fernández, CarlosBringué Tomàs, RogerFité Piquer, CarlesIborra Urios, MontserratTejero Salvador, Xavier2017-09-062018-04-172017-04-170001-1541https://hdl.handle.net/2445/115030The kinetics of the liquid phase dehydration of 1-octanol to di-n-octyl ether (DNOE) over Amberlyst 70 was studied at 413-453K. Mechanistic rate models assuming water and 1-octanol adsorbed on the resin, and the free sites fraction negligible, were selected from 1-octanol dehydration experiments. Next, the influence of DNOE, water and 1,4-dioxane (solvent) concentration was evaluated. DNOE and 1,4-dioxane do not affect significantly the reaction rate, while water inhibits it strongly. Water effect was quantified by splitting the rate constant into a 'true one' and a correction factor related to the fraction of active sites blocked by water. The best kinetic model stemmed from an Eley-Rideal mechanism with water adsorbed onto the resin and DNOE released directly to the liquid phase, with a correction factor for water inhibitory effect based on a Freundlich isotherm-like function; activation energy being 110±5 kJ·mol-1 based in line with literature data on homologous reactions.13 p.application/pdfeng(c) American Institute of Chemical Engineers, 2017Resines de bescanvi iònicÈtersCinètica enzimàticaAlcoholsCatàlisiIon exchange resinsEthersEnzyme kineticsAlcoholsCatalysisinfo:eu-repo/semantics/article6732382017-09-06info:eu-repo/semantics/openAccess