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Antoni Martinezandreu - One of the best experts on this subject based on the ideXlab platform.
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isobaric vapor liquid equilibria for Ethyl Acetate ethanol 1 Ethyl 3 mEthylimidazolium trifluoromethanesulfonate at 100 kpa
Journal of Chemical & Engineering Data, 2007Co-Authors: Vicent A Orchilles, Pablo J. Miguel, And Ernesto Vercher, Antoni MartinezandreuAbstract:Isobaric vapor−liquid equilibria for the binary systems Ethyl Acetate + ethanol, Ethyl Acetate + 1-Ethyl-3-mEthylimidazolium trifluoromethanesulfonate ([emim][triflate]), and ethanol + [emim][triflate] as well as the vapor−liquid equilibria for the Ethyl Acetate + ethanol + [emim][triflate] ternary system have been obtained at 100 kPa using a recirculating still. NRTL fitting parameters for the Ethyl Acetate + ethanol and ethanol + [emim][triflate] systems were calculated. The measured ternary data were correlated using the Mock electrolyte NRTL model, which reproduces reasonably well the experimental values. The results suggest that the addition of [emim][triflate] to the Ethyl Acetate + ethanol mixture produced an important salting-out effect, and the azeotrope disappears when the mole fraction of ionic liquid in the liquid phase is greater than 0.20.
Fengying Xing - One of the best experts on this subject based on the ideXlab platform.
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isobaric vapor liquid equilibrium for Ethyl Acetate ethanol 1 Ethyl 3 mEthylimidazolium tetrafluoroborate
Journal of Chemical & Engineering Data, 2009Co-Authors: Jiguo Zhang, Zhigang Lei, Jiujuan Zhu, Fengying XingAbstract:Isobaric vapor−liquid equilibrium (VLE) data for Ethyl Acetate (1) + ethanol (2) containing ionic liquid (IL) 1-Ethyl-3-mEthylimidazolium tetrafluoroborate ([EMIM]+[BF4]−) (3) at atmospheric pressure (101.32 kPa) were measured with a modified Othmer still. It was observed that the VLE data containing the IL were obviously different from that of the IL-free system. The IL investigated showed a notable salting-out effect, which enhanced the relative volatility of Ethyl Acetate to ethanol and gave rise to the elimination of the azeotropic point at a specific IL mole fraction. It was found that the salting-out effect followed the order of x3 = 0.30 > x3 = 0.20 > x3 = 0.07. The measured ternary data were correlated using the NRTL model.
Vicent A Orchilles - One of the best experts on this subject based on the ideXlab platform.
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isobaric vapor liquid equilibria for Ethyl Acetate ethanol 1 Ethyl 3 mEthylimidazolium trifluoromethanesulfonate at 100 kpa
Journal of Chemical & Engineering Data, 2007Co-Authors: Vicent A Orchilles, Pablo J. Miguel, And Ernesto Vercher, Antoni MartinezandreuAbstract:Isobaric vapor−liquid equilibria for the binary systems Ethyl Acetate + ethanol, Ethyl Acetate + 1-Ethyl-3-mEthylimidazolium trifluoromethanesulfonate ([emim][triflate]), and ethanol + [emim][triflate] as well as the vapor−liquid equilibria for the Ethyl Acetate + ethanol + [emim][triflate] ternary system have been obtained at 100 kPa using a recirculating still. NRTL fitting parameters for the Ethyl Acetate + ethanol and ethanol + [emim][triflate] systems were calculated. The measured ternary data were correlated using the Mock electrolyte NRTL model, which reproduces reasonably well the experimental values. The results suggest that the addition of [emim][triflate] to the Ethyl Acetate + ethanol mixture produced an important salting-out effect, and the azeotrope disappears when the mole fraction of ionic liquid in the liquid phase is greater than 0.20.
Tom Ooms - One of the best experts on this subject based on the ideXlab platform.
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separation of Ethyl Acetate isooctane mixture by heteroazeotropic batch distillation
Chemical Engineering Research & Design, 2014Co-Authors: Tom Ooms, Steven Vreysen, Guy Van Baelen, Vincent Gerbaud, Ivonne RodriguezdonisAbstract:This paper studies the separation of an Ethyl Acetate–isooctane mixture by heterogeneous azeotropic distillation in a batch rectifying column. An initial list of 60 candidates was studied but only methanol and acetonitrile were obtained as potential heterogeneous entrainers. These entrainers form a low boiling heterogeneous azeotrope with isooctane. Experimental verification of the miscibility gap with isooctane was performed at 25 °C for each entrainer giving a smaller region for methanol than for acetonitrile. Feasibility of the heterogeneous azeotropic batch distillation was carried out experimentally in a laboratory batch distillation column having 44 theoretical equilibrium stages and using a high reflux ratio. Several distillate fractions were taken as a function of the temperature at the top of the column. For both methanol and acetonitrile, the main fraction was defined by the condensed vapor providing a liquid–liquid split of the isooctane/entrainer heteroazeotrope into the decanter. Ethyl Acetate impurity was detected in both decanted phases, but in much lower amount when using acetonitrile as entrainer. The process with acetonitrile also resulted in a shorter operating time and higher purity and recovery yield of isooctane as the main distillate product. Pure Ethyl Acetate remained into the boiler at the end of each process.
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separation of Ethyl Acetate isooctane mixtures by pervaporation and pervaporation based hybrid methods
Chemical Engineering Journal, 2012Co-Authors: Ashak Mahmud Parvez, Tom Ooms, Steven Vreysen, Patricia Luis, P Vandezande, Jan Degreve, B Van Der BruggenAbstract:Abstract The separation of binary Ethyl Acetate–isooctane mixtures by pervaporation and pervaporation-based hybrid methods is studied in this paper. The potential of pervaporation using commercially available membranes (PolyAn GmbH, Germany) was evaluated experimentally and the effect of the feed concentration and the operating temperature on the separation performance was determined. Only two of the eight tested membranes, i.e. POL_AL_M2 and POL_OL_M2 were found preferentially permeable to Ethyl Acetate and chemically stable up to 25 wt.% of Ethyl Acetate in isooctane solution, thus restricting the concentration range for which pervaporation can be applied. The POL_OL_M2 membrane combining a maximum separation factor of 22.34 with a total permeate flux of 6.3 kg/m2 h at 30 °C and a feed concentration of 25 wt.% Ethyl Acetate, demonstrated a higher pervaporation separation index (PSI) than the POL_AL_M2 membrane. The obtained retentate was highly concentrated in isooctane (more than 99 wt.%) but the permeate reaches an Ethyl Acetate concentration lower than 90 wt.%. As maximal isooctane recovery and full Ethyl Acetate purification could not be achieved by stand-alone pervaporation using the available membranes, pervaporation-based hybrid processes were considered for both solvents. Because of its higher PSI, the POL_OL_M2 membrane was selected for these hybrid processes, aiming at a higher purity of Ethyl Acetate enriched permeate and total recovery of both Ethyl Acetate and isooctane.
Ivonne Rodriguezdonis - One of the best experts on this subject based on the ideXlab platform.
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separation of Ethyl Acetate isooctane mixture by heteroazeotropic batch distillation
Chemical Engineering Research & Design, 2014Co-Authors: Tom Ooms, Steven Vreysen, Guy Van Baelen, Vincent Gerbaud, Ivonne RodriguezdonisAbstract:This paper studies the separation of an Ethyl Acetate–isooctane mixture by heterogeneous azeotropic distillation in a batch rectifying column. An initial list of 60 candidates was studied but only methanol and acetonitrile were obtained as potential heterogeneous entrainers. These entrainers form a low boiling heterogeneous azeotrope with isooctane. Experimental verification of the miscibility gap with isooctane was performed at 25 °C for each entrainer giving a smaller region for methanol than for acetonitrile. Feasibility of the heterogeneous azeotropic batch distillation was carried out experimentally in a laboratory batch distillation column having 44 theoretical equilibrium stages and using a high reflux ratio. Several distillate fractions were taken as a function of the temperature at the top of the column. For both methanol and acetonitrile, the main fraction was defined by the condensed vapor providing a liquid–liquid split of the isooctane/entrainer heteroazeotrope into the decanter. Ethyl Acetate impurity was detected in both decanted phases, but in much lower amount when using acetonitrile as entrainer. The process with acetonitrile also resulted in a shorter operating time and higher purity and recovery yield of isooctane as the main distillate product. Pure Ethyl Acetate remained into the boiler at the end of each process.