preparación y caracterización de carbones activados obtenidos a partir de la retama

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ID: 155559
2005
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Abstract
Black broom (Sarothamnus scoparius) is a bush that grows abundantly in the region of Extremadura. The potential use of this lignocellulosic material as raw material for the preparation of activated carbon by physical activation is investigated. The activated carbons are characterised by means of chemical analysis, N2 adsorption at 77 K, mercury porosimetry and helium and mercury densities. It has been observed that the activation in CO2 atmosphere leads to better textural properties than those obtained when air was used as activating agent. The effects of the activation procedure on the textural properties of the samples are favoured with the increase in the activation temperature.<br><br>La retama negra (Sarothamnus scoparius) es un arbusto que crece en forma abundante en la región extremeña. En el presente estudio se investiga su posible utilización como material de partida en la preparación de carbón activado. Ésta se lleva a cabo por el método de activación física. Los carbones son caracterizados mediante análisis químico, adsorción de N2 a 77 K, porosimetría de mercurio y medida de densidades por desplazamiento de helio y de mercurio. Se ha constatado que activando en CO2 se preparan carbones activados que poseen unas mejores propiedades texturales que los obtenidos utilizando aire. Los efectos de la activación sobre las propiedades texturales de los carbones se favorecen con la subida de la temperatura de activación.
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Authors ;Macías García, Antonio;Díaz Díez, Mª. Ángeles;Gómez Serrano, Vicente
Journal medicinal chemistry (shariqah (united arab emirates))
Year 2005
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