Catalizador novedoso híbrido para la esterificación de aceites de Jatropha con altos contenidos en ácidos grasos libres para la producción de biodiesel

Autores/as

  • M. Mushtaq Chemical Engineering Department, Universiti Teknologi PETRONAS
  • I. M. Tan Chemical Engineering Department, Universiti Teknologi PETRONAS
  • M. Sagir Chemical Engineering Department, Universiti Teknologi PETRONAS - Chemical Engineering Department, University of Gujrat
  • M. Suleman Tahir Chemical Engineering Department, University of Gujrat
  • M. Pervaiz Govt. College University Lahore

DOI:

https://doi.org/10.3989/gya.0216161

Palabras clave:

Aceite de Jatrofa, Ácidos grasos libres, Biodiesel, Catalizadores heterogéneos, Esterificación

Resumen


Se aborda la síntesis mediante el uso de un catalizador híbrido en la esterificación de ácidos grasos libres (AGL) de aceites de Jatrofa. Se investigaron tres catalizadores: ácido sulfúrico sobre sílica, trifluoruro de boro sobre sílice y un catalizador híbrido, combinación de los dos anteriores en una relación 1:1en peso. Muestras de aceites de Jatrofa con una amplia gama de valores de FFA: desde 6,64 a 45,64% se prepararon y se utilizaron en la parte experimental de este trabajo. Este estudio mostró que los soportes de ácido sulfúrico sobre sílica y el de trifluoruro de boro sobre sílice no eran muy eficaces cuando se utilizan de forma independiente. Sin embargo, un fuerte efecto sinérgico se observó en la actividad catalítica del catalizador híbrido que reduce el valor de FFA de 45,64 a 903% con una eficiencia de conversión del 98%. La reutilización de catalizador también fue probado y los resultados fueron prometedores hasta tres ciclos de uso cuando se utiliza un aceite con menor cantidad de FFA (6,64%). Bajo la acción del catalizador, se encontró que la reacción sigue una cinética de primer orden. La energía de activación se calculó y fue de 45,42 kJ·mol-1 para el catalizador híbrido al 2% en peso. Se reportan los resultados de los productos analizados por técnicas espectroscópicas FT-IR y RMN.

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Citas

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Publicado

2016-09-30

Cómo citar

1.
Mushtaq M, Tan IM, Sagir M, Suleman Tahir M, Pervaiz M. Catalizador novedoso híbrido para la esterificación de aceites de Jatropha con altos contenidos en ácidos grasos libres para la producción de biodiesel. Grasas aceites [Internet]. 30 de septiembre de 2016 [citado 23 de febrero de 2025];67(3):e150. Disponible en: https://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/1616

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