Artículo
Oxidative coupling of methane on cordierite monoliths coated with Sr/La 2 O 3 catalysts. Influence of honeycomb structure and catalyst-cordierite chemical interactions on the catalytic behavior
Sollier, Brenda Maria del Valle
; Gómez, Leticia Ester
; Boix, Alicia Viviana
; Miro, Eduardo Ernesto
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Fecha de publicación:
11/2017
Editorial:
Elsevier Science
Revista:
Applied Catalysis A: General
ISSN:
0926-860X
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
When powder Sr/La2O3 catalysts are deposited on the walls of cordierite monoliths, an important increase in both, methane conversion and C2 yield, takes place. In this work, it is shown that this improved catalytic behavior is due to a combination of physical and chemical factors. This conclusion was drawn after performing a systematic study in which several structured formulations were catalytically evaluated and characterized using different techniques (EDX, XRD, BET, XPS, LRS), which helped us to rationalize the experimental observations. It is suggested that the honeycomb structure provides a more homogeneous gaseous flow as compared with the powder catalyst. This fact results in a better contact between reactant and catalyst surface, which in turn results in an increase of the overall reaction rate. Furthermore, it is demonstrated that the catalytic layer enrichment with Mg and Si, coming from the cordierite structure, greatly contributes to the improved catalytic behavior.
Palabras clave:
Methane Oxidative Coupling
,
Sr/La2o3
,
Cordierite Monolith
,
Activation
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Articulos(INCAPE)
Articulos de INST.DE INVEST.EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Articulos de INST.DE INVEST.EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Citación
Sollier, Brenda Maria del Valle; Gómez, Leticia Ester; Boix, Alicia Viviana; Miro, Eduardo Ernesto; Oxidative coupling of methane on cordierite monoliths coated with Sr/La 2 O 3 catalysts. Influence of honeycomb structure and catalyst-cordierite chemical interactions on the catalytic behavior; Elsevier Science; Applied Catalysis A: General; 550; 25; 11-2017; 113-121
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