Hydrogen generation from renewables: Steam reforming of ethanol and dimethyl ether over structured catalysts
Ethanol and dimethyl ether can be efficiently reformed with steam over appropriate catalysts for generating hydrogen. Both substrates provide a valuable example of the use of renewable chemicals for energy applications. At temperatures as low as 623 K, a mixture of ethanol and water at S/C=1.5 can y...
| Autores: | , , , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2009 |
| País: | Argentina |
| Recursos: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/61652 |
| Acesso em linha: | http://hdl.handle.net/11336/61652 |
| Access Level: | acceso abierto |
| Palavra-chave: | Hydrogen Steam Reforming Bio-Fuel Ethanol https://purl.org/becyt/ford/2.4 https://purl.org/becyt/ford/2 |
| Resumo: | Ethanol and dimethyl ether can be efficiently reformed with steam over appropriate catalysts for generating hydrogen. Both substrates provide a valuable example of the use of renewable chemicals for energy applications. At temperatures as low as 623 K, a mixture of ethanol and water at S/C=1.5 can yield as much as 92 percent H2 over honeycomb structures coated with cobalt-based catalyst layers, with only 1 percent carbon monoxide. Dimethyl ether can be similarly reformed at 823 K. At S/C=1.5, hydrogen yields up to 80 percent are obtained over honeycombs coated with copper-zinc supported over ZrO2. The performance of these systems improves considerably by using microreaction technologies, not only by increasing the surface-to-volume ratio, but also for allowing autothermal regimes. |
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