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4641888 
Journal Article 
Equilibrium conversion, selectivity and yield optimization of the simultaneous liquid-phase etherification of isobutene and isoamylenes with ethanol over Amberlyst (TM) 35 
Soto, R; Fite, C; Ramirez, E; Bringue, R; Cunill, F 
2016 
Yes 
Fuel Processing Technology
ISSN: 0378-3820 
142 
201-211 
WOS:000367107300023 
A prospective study on the product distribution at chemical equilibrium for the simultaneous liquid-phase etherification of isobutene and isoamylenes with ethanol over Amberlyst (TM) 35 is presented. Experiments were performed isothermally in a 200 cm(3) stirred tank batch reactor operating at 2.0 MPa. Initial molar ratios of alcohol/olefins and isobutene/isoamylenes ranged both from 05 to 2, and temperature from 323 to 353 K. Reactants equilibrium conversion, selectivities and yields toward products were clearly affected by the experimental conditions. Experimental etherification yields have been modeled using the response surface methodology (RSM), combined with the stepwise regression method to include only the statistically significant variables into the model. The multiobjective optimization (MOO) of etherification yields has been carried out numerically, by means of the desirability function approach, and graphically, by using the overlaid contour plots (OCP). Optimal conditions for the simultaneous production of ethyl tert-butyl ether (ETBE) and tert-amyl ethyl ether (TAEE) have been found to be at low temperatures (323 to 337 K) and initial molar ratio alcohol/olefins close to 0.9 and isobutene/isoamylenes close to 0.5. (C) 2015 Elsevier B.V. All rights reserved. 
Ethyl tert-butyl ether (ETBE); Tert-amyl ethyl ether (TAEE); Simultaneous etherification; Equilibrium conversion; Selectivity; Yield optimization 
IRIS
• tert-Amyl ethyl ether (TAEE)
     Initial Litsearch 6/2018
          WOS