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http://hdl.handle.net/2445/106615
Title: | Kinetic study of 1-butanol dehydration to di-n-butyl ether over Amberlyst 70 |
Author: | Pérez-Maciá, María Ángeles Bringué Tomàs, Roger Iborra Urios, Montserrat Tejero Salvador, Xavier Cunill García, Fidel |
Keywords: | Resines de bescanvi iònic Èters Cinètica enzimàtica Alcohols Catàlisi Ion exchange resins Ethers Enzyme kinetics Alcohols Catalysis |
Issue Date: | 1-Jan-2016 |
Publisher: | American Institute of Chemical Engineers (AIChE) |
Abstract: | Kinetics of the catalytic dehydration of 1-butanol to di-n-butyl ether (DNBE) over Amberlyst 70 was investigated. Experiments were performed in liquid phase at 4 MPa and 413 463 K. Three elementary reaction mechanisms were considered: a Langmuir‐Hinselwood‐ Hougen‐Watson (LHHW) formulation; an Eley-Rideal (ER) formulation in which DNBE remains adsorbed; an ER formulation in which water remains adsorbed. Two kinetic models explain satisfactorily the dehydration of 1-butanol to DNBE: a LHHW formalism in which the surface reaction between two adjacent adsorbed molecules of 1-butanol is the rate limiting step (RLS) and where the adsorption of water is negligible, and a mechanism in which the RLS is the desorption of water being the adsorption of DNBE negligible. In both models the strong inhibiting effect of water was successfully taken into account by means of a correction factor derived from a Freundlich adsorption isotherm. Both models present similar values of apparent activation energies (122±2 kJ/mol) |
Note: | Versió postprint del document publicat a: https://doi.org/10.1002/aic.15020 |
It is part of: | AIChE Journal, 2016, vol. 62, num. 1, p. 180-194 |
URI: | http://hdl.handle.net/2445/106615 |
Related resource: | https://doi.org/10.1002/aic.15020 |
ISSN: | 0001-1541 |
Appears in Collections: | Articles publicats en revistes (Enginyeria Química i Química Analítica) |
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