Revista: | Journal of applied research and technology |
Base de datos: | PERIÓDICA |
Número de sistema: | 000427615 |
ISSN: | 1665-6423 |
Autores: | Villarreal, Aline1 Garbarino, Gabriella1 Riani, Paola3 Gutiérrez Alejandre, Aida2 Ramírez, Jorge2 Busca, Guido1 |
Instituciones: | 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 |
Año: | 2018 |
Periodo: | Dic |
Volumen: | 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 |
Disciplinas: | Ingeniería |
Palabras clave: | 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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