Producción de biodiesel a partir de diferentes aceites utilizando un catalizador mesoporoso bimetálico
Date
2021
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Abstract
Con el fin de competir con la producción de biodiesel vía catálisis homogénea, que es el método más difundido
y utilizado actualmente a nivel industrial, se desarrolló un catalizador sólido bimetálico con alta superficie
expuesta, alta basicidad y reutilizable a lo largo de varios ciclos de reacción. El catalizador se preparó por el
método de impregnación en húmedo dopando la sílice mesoporosa SBA-15 con un 5% en peso de sodio y un 20% en
peso de cerio. Tras estudiar las propiedades texturales y fisicoquímicas de los materiales, la actividad del
catalizador sintetizado fue evaluada en la transesterificación de diferentes aceites con metanol absoluto para
producir biodiesel. Asimismo, se evaluó la reutilización del material en cuatro ciclos adicionales de reacción y la
heterogeneidad de la misma se comprobó mediante la prueba de filtrado en caliente.
With the purpose to compete with the homogeneous catalytic biodiesel production, which is the most widespread and currently used method, a bimetallic-solid catalyst with high exposed surface, high basicity, and reusable throughout several reaction cycles was developed. The catalyst was prepared by the wet impregnation method, doping mesoporous silica SBA-15 with a 5% by weight of sodium and 20% by weight of cerium. After studying the textural and physicochemical properties of the materials, the activity of the synthesized catalyst was evaluated in the transesterification of different oils with absolute methanol to produce biodiesel. In addition, the reusability of the material was evaluated in four additional reaction cycles and its heterogeneity was verified by means of the hot-filtration test.
With the purpose to compete with the homogeneous catalytic biodiesel production, which is the most widespread and currently used method, a bimetallic-solid catalyst with high exposed surface, high basicity, and reusable throughout several reaction cycles was developed. The catalyst was prepared by the wet impregnation method, doping mesoporous silica SBA-15 with a 5% by weight of sodium and 20% by weight of cerium. After studying the textural and physicochemical properties of the materials, the activity of the synthesized catalyst was evaluated in the transesterification of different oils with absolute methanol to produce biodiesel. In addition, the reusability of the material was evaluated in four additional reaction cycles and its heterogeneity was verified by means of the hot-filtration test.
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Keywords
Biodiesel, Materiales mesoporosos, Catálisis heterogénea alcalina, Catalizador bimetálico
Citation
Jornada de Ciencia y Tecnología (2021).
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