Adsorción de hidrógeno en silicatos mesoporosos modificados con níquel: Rol de la porosidad del soporte SBA-15
Date
2017
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Abstract
En este trabajo, el sólido SBA-15 se modificó con níquel por el método de impregnación húmeda
para estudiar la influencia de diferentes factores (contenido de metal, soporte, método de preparación)
sobre el comportamiento en el almacenamiento de hidrógeno. La adsorción de H2 se evaluó a bajas
presiones (hasta 10) a 77 K, evaluando la influencia del níquel metálico sobre dicha capacidad de
adsorción. Las propiedades de los materiales preparados se estudiaron mediante técnicas de adsorcióndesorción de N2, DRX, RTP, UV-Vis y TEM. Los resultados indicaron la importancia de la dispersión
de níquel sobre el soporte para mejorar el almacenamiento de hidrógeno.
In this work, SBA-15 support was impregnated with nickel by a wet impregnation method in order to study the influence of different factors (metal content, support, method of preparation) on hydrogen storage behavior. H2 adsorption was measured at low pressures (up to 10 bar) at 77 K, evaluating the influence of metallic nickel on such adsorption capacity. The properties of the prepared materials were studied by N2 adsorption-desorption, XRD, TPR, UV–Vis and TEM techniques. The results indicated the importance of the nickel dispersion on the support to improve hydrogen storage.
In this work, SBA-15 support was impregnated with nickel by a wet impregnation method in order to study the influence of different factors (metal content, support, method of preparation) on hydrogen storage behavior. H2 adsorption was measured at low pressures (up to 10 bar) at 77 K, evaluating the influence of metallic nickel on such adsorption capacity. The properties of the prepared materials were studied by N2 adsorption-desorption, XRD, TPR, UV–Vis and TEM techniques. The results indicated the importance of the nickel dispersion on the support to improve hydrogen storage.
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Keywords
SBA-15, Nïquel, Porosidad, Adsorción H2
Citation
XX Congreso Argentino de Catálisis (2017).
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