Artículo
Thermo-chemically tuning of active basic sites on nanoarchitectured silica for biodiesel production
Sánchez Faba, Edgar Maximiliano
; Ferrero, Gabriel Orlando
; Dias, Joana M.; Eimer, Griselda Alejandra
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Fecha de publicación:
01/09/2018
Editorial:
Elsevier B.V.
Revista:
Molecular Catalysis
ISSN:
2468-8231
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
In the design of catalysts, an extremely important point is to determine, control and increase the availability of active sites on the surface. In the present work, active sodium oxide species have been identified and it is demonstrated how its dispersion can be suitably improved by combining sodium loading degree and calcination heating rate in order to increase the catalyst basic character and consequently, its performance. The different synthesized materials were characterized by: small-angle X-ray scattering (SAXS), high angle X-ray diffractions (XRD), atomic absorption spectroscopy (AA), BET method (specific surface determination), Fourier-transform infrared spectroscopy (FT-IR), carbon dioxide temperature programed desorption (CO2 TPD) and X-ray photoelectron spectroscopy (XPS). The obtained catalyst using 10 wt% of sodium loading followed by calcination at 500 °C, employing an 8 °C/min heating rate, showed the highest activity towards the transesterification of sunflower oil reaction (5 h, 60 °C, 14:1 methanol to oil molar ratio, 2 wt% catalyst, vigorous magnetic stirring), achieving a 90% biodiesel yield.
Palabras clave:
BIODIESEL
,
CALCINATION RATE
,
MESOPOROUS SILICA
,
SODIUM
,
SUNFLOWER OIL
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Identificadores
Colecciones
Articulos(CITEQ)
Articulos de CENTRO DE INVESTIGACION Y TECNOLOGIA QUIMICA
Articulos de CENTRO DE INVESTIGACION Y TECNOLOGIA QUIMICA
Citación
Sánchez Faba, Edgar Maximiliano; Ferrero, Gabriel Orlando; Dias, Joana M.; Eimer, Griselda Alejandra; Thermo-chemically tuning of active basic sites on nanoarchitectured silica for biodiesel production; Elsevier B.V.; Molecular Catalysis; 1-9-2018
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