Influence of incorporating a small amount of silica on the catalytic performance of a MoO3/Al2O3 catalyst in ethanol oxidative dehydrogenation
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| Format: | Artículo científico |
| Sprache: | en |
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Universidad Nacional Autónoma de México
2018
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| author | Aline Villarreal |
| author_facet | Aline Villarreal |
| contents | Influence of incorporating a small amount of silica on the catalytic performance of a MoO3/Al2O3 catalyst in ethanol oxidative dehydrogenation Aline Villarreal Gabriella Garbarino Paola Riani Aida Gutiérrez-Alejandre Jorge Ramírez Guido Busca Ingeniería ethanol oxy alumina support dehydrogenation acetaldehyde production Molybdenum oxide catalysts 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. 2018 artículo científico 1665-6423 https://www.redalyc.org/articulo.oa?id=47471640004 https://www.redalyc.org/journal/474/47471640004/ https://www.redalyc.org/journal/474/47471640004/html/ https://www.redalyc.org/journal/474/47471640004/47471640004.epub https://www.redalyc.org/journal/474/47471640004/movil 10.22201/icat.16656423.2018.16.6.746 en http://www.redalyc.org/revista.oa?id=474 Journal of Applied Research and Technology application/pdf Universidad Nacional Autónoma de México Journal of Applied Research and Technology (México) Num.6 Vol.16 |
| format | Artículo científico |
| id | redalyc_47471640004 |
| institution | Redalyc |
| language | en |
| publishDate | 2018 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Influence of incorporating a small amount of silica on the catalytic performance of a MoO3/Al2O3 catalyst in ethanol oxidative dehydrogenation Aline Villarreal Ingeniería ethanol oxy alumina support dehydrogenation acetaldehyde production Molybdenum oxide catalysts Influence of incorporating a small amount of silica on the catalytic performance of a MoO3/Al2O3 catalyst in ethanol oxidative dehydrogenation Aline Villarreal Gabriella Garbarino Paola Riani Aida Gutiérrez-Alejandre Jorge Ramírez Guido Busca Ingeniería ethanol oxy alumina support dehydrogenation acetaldehyde production Molybdenum oxide catalysts 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. 2018 artículo científico 1665-6423 https://www.redalyc.org/articulo.oa?id=47471640004 https://www.redalyc.org/journal/474/47471640004/ https://www.redalyc.org/journal/474/47471640004/html/ https://www.redalyc.org/journal/474/47471640004/47471640004.epub https://www.redalyc.org/journal/474/47471640004/movil 10.22201/icat.16656423.2018.16.6.746 en http://www.redalyc.org/revista.oa?id=474 Journal of Applied Research and Technology application/pdf Universidad Nacional Autónoma de México Journal of Applied Research and Technology (México) Num.6 Vol.16 |
| title | Influence of incorporating a small amount of silica on the catalytic performance of a MoO3/Al2O3 catalyst in ethanol oxidative dehydrogenation |
| topic | Ingeniería ethanol oxy alumina support dehydrogenation acetaldehyde production Molybdenum oxide catalysts |
| url | https://www.redalyc.org/articulo.oa?id=47471640004 https://www.redalyc.org/journal/474/47471640004/ https://www.redalyc.org/journal/474/47471640004/html/ https://www.redalyc.org/journal/474/47471640004/47471640004.epub https://www.redalyc.org/journal/474/47471640004/movil |