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A study of butyl acetate synthesis. 4. reaction kinetics
Estudio de la síntesis de acetato de butilo. 4. Cinética de reacción
Keywords:
ion exchange resins, esterification, butyl acetate, kinetics (en)resinas de intercambio, esterificación, acetato de butilo, cinética (es)
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This work was aimed at studying liquid-phase acetic acid and butyl alcohol esterification reaction (Patm =0.76 Bar), using an ion exchange resin (Lewatit K-2431) as catalyst. The effect of the absence of internal and external mass transport on catalyst particles was established in the research conditions used here. A set of assays to determine the effect of catalyst load (0.5%, 1%, 2% w/w) temperature (73°C, 80°C, 87°C) and molar ratio (1:2, 1:1, 2:1 acid/ alcohol) on reaction rate was carried out and both LHHW and pseudo-homogeneous kinetic expressions were obtained, these being in good agreement with the experimental data.
En este trabajo se adelantó un estudio de la reacción de esterificación de ácido acético y n-butanol en fase liquida (Patm = 0,76 Bar), utilizando unas resinas de intercambio catiónico (Lewatit K-2431) como catalizador. Se estableció la ausencia de efectos de transferencia de masa dentro y fuera de las partículas de catalizador en las condiciones estudiadas. Se efectuaron ensayos para determinar la influencia de la carga del catalizador (0.5 %, 1%, 2% p/p), la temperatura (73°C, 80°C, 87°C) y la relación molar de alimentación (ácido/alcohol 1:2, 1:1, 2:1) sobre la velocidad de la reacción, y se obtuvieron dos expresiones cinéticas del tipo LHHW y seudohomogéneo que representa adecuadamente los datos experimentales.
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Copyright (c) 2006 Álvaro Orjuela Londoño, Fernando Leiva Lenis, Luis Alejandro Boyacá Mendivelso, Gerardo Rodríguez Niño, Luis María Carballo Suárez
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