Hydrogen production from ethanol with low carbon monoxide generation in one-pot reaction with iron oxides as catalysts
Bulk γ-Fe2O3 (maghemite) and Fe3O4 (magnetite) were synthesized with Fe(III) hydroxyacetate as an intermediate during the preparation step. The fresh and used catalysts were characterized by X-ray diffraction, N2 adsorption at 77 K, Mössbauer spectroscopy at 298 K, diffuse-reflectance spectroscopy,...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2014 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/5752 |
| Acceso en línea: | http://hdl.handle.net/11336/5752 |
| Access Level: | acceso abierto |
| Palabra clave: | Hydrogen Production with Low Co Content Ethanol Hydrotreatment Magnetite Catalyst https://purl.org/becyt/ford/2.4 https://purl.org/becyt/ford/2 |
| Sumario: | Bulk γ-Fe2O3 (maghemite) and Fe3O4 (magnetite) were synthesized with Fe(III) hydroxyacetate as an intermediate during the preparation step. The fresh and used catalysts were characterized by X-ray diffraction, N2 adsorption at 77 K, Mössbauer spectroscopy at 298 K, diffuse-reflectance spectroscopy, and thermogravimetric analysis. The solids were used as catalysts in the ethanol hydrotreatment within the range of 673-758 K. The catalysts showed a satisfactory selectivity for H2 and an especially low CO production. These activities and selectivities were analyzed in conjunction with the structural properties of the oxides. Magnetite seemed to be a more appropriate catalyst than maghemite since the latter was converted into magnetite at reaction temperatures higher than 713 K because of the reducing atmosphere. |
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