Artículo
Magnetic Fe3O4atSiO2-Pt and Fe3O4atSiO2-PtatSiO2 structures for HDN of indole
Dinamarca, Robinson; Vallés, Verónica Alejandra
; Ledesma, Brenda Cecilia Soledad
; Campos, Cristian H.; Pecchi, Gina; Beltramone, Andrea Raquel
Fecha de publicación:
12/2019
Editorial:
Multidisciplinary Digital Publishing Institute
Revista:
Materials
e-ISSN:
1996-1944
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The effect of a second porous SiO2 shell in the activity and selectivity of the Fe3O4atSiO2-Pt catalyst in the hydrodenitrogenation of indole is reported. The double Fe3O4atSiO2-PtatSiO2 structure was prepared by coating Fe3O4 nanoparticles with tetraethyl orthosilicate (TEOS) with a further impregnation of 1.0 wt.% of Pt on the (3-aminopropyl)triethoxysilane functionalized Fe3O4atSiO2 structures. The second porous SiO2 shell, obtained by using a hexadecyltrimethylammonium bromide (CTAB) template, covered the Fe3O4atSiO2-Pt catalyst with a well-defined and narrow pore-sized distribution. The full characterization by TEM, inductively coupled plasma-optical emission spectroscopy (ICP-OES), XRD, and N2 adsorption isotherm at 77 K and vibrating sample magnetometry (VSM) of the catalysts indicates homogeneous coreatshell structures with a controlled nano-size of metallic Pt. A significant effect of the double SiO2 shell in the catalytic performance was demonstrated by both a higher activity to eliminate the nitrogen atom of the indole molecule present in model liquid fuel and the improvement of the catalytic stability reaching four consecutive reaction cycles with only a slight conversion level decrease.
Palabras clave:
COREATSHELL
,
INDOLE HDN
,
MESOPOROUS MATERIALS
,
PLATINUM
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CCT - CORDOBA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Citación
Dinamarca, Robinson; Vallés, Verónica Alejandra; Ledesma, Brenda Cecilia Soledad; Campos, Cristian H.; Pecchi, Gina; et al.; Magnetic Fe3O4atSiO2-Pt and Fe3O4atSiO2-PtatSiO2 structures for HDN of indole; Multidisciplinary Digital Publishing Institute; Materials; 12; 23; 12-2019; 1-12
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