Influence of incorporating a small amount of silica on the catalytic performance of a MoO3/Al2O3 catalyst in ethanol oxidative dehydrogenation
Título del documento: Influence of incorporating a small amount of silica on the catalytic performance of a MoO3/Al2O3 catalyst in ethanol oxidative dehydrogenation
Revista: Journal of applied research and technology
Base de datos: PERIÓDICA
Número de sistema: 000427615
ISSN: 1665-6423
Autors: 1
1
3
2
2
1
Institucions: 1Universita degli Studi di Genova, Dipartimento di Ingegneria Civile, Chimica e Ambientale, Genova, Liguria. Italia
2Universidad Nacional Autónoma de México, Facultad de Química, Ciudad de México. México
3Universita degli Studi di Genova, Dipartimento di Chimica e Chimica Industriale, Genova, Liguria. Italia
Any:
Període: Dic
Volum: 16
Número: 6
País: México
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, aplicado
Resumen en inglés The influence of incorporating a small amount of silica on the catalytic performance of MoO3/Al2O3 catalyst was studied. Molybdenum supported on pure alumina and 5% SiO2-Al2O3 supports were synthesized. The catalysts were characterized by XRD, Raman, UV-Vis and IR spectroscopies, FE-SEM microscopy, and their activity was evaluated in the oxidative dehydrogenation of ethanol to acetaldehyde. Molybdenum supported on pure alumina gives a 74% yield to acetaldehyde (at 573 K) due to the generation of oxy-dehydrogenation active sites by molybdenum and to the decrement of the alumina dehydration sites. For the molybdenum catalyst supported on silica-containing alumina, the molybdenum species were displaced from the strongest alumina’s acid-base couples, located on nanoparticles edges, corners and defects, to weaker ones located on plane faces causing the rise of weakly bonded species with less active redox behavior
Disciplines Ingeniería
Paraules clau: Ingeniería química,
Ingeniería de materiales,
Catalizadores,
Oxido de molibdeno,
Deshidrogenación oxidativa,
Etanol,
Acetaldehído
Keyword: Chemical engineering,
Materials engineering,
Catalysts,
Molybdenum oxide,
Oxidative dehydrogenation,
Ethanol,
Acetaldehyde
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