In the work now reported the production of activated carbons from a novel precursor, esparto grass, by activation with carbon dioxide is presented. The results show that the materials produced have interesting properties, namely BET apparent surface area and pore volume up to 1122 m2 g−1 and 0.46 cm3 g−1, respectively. The activated carbons have basic characteristics with point of zero charge between 9.25 and 1...
No presente trabalho é reportado a produção e caracterização de carvões activados por um processo de carbonização hidrotérmia a partir de açucares simples e complexos.
Neste trabalho apresentam-se os resultados da caracterização textural e da estabilidade estrutural de materiais mesoporosos ordenados, do tipo SBA-15, com elevado teor de titânio, que foram preparados por um método de síntese direta, por via hidrotérmica, designado por híbrido dado que se fundamentou nos procedimentos de síntese previamente estabelecidos na literatura.
Activated carbons (ACs) are artificial materials, prepared from natural or synthetic precursors that are worldwide extensively used. The ACs main characteristics are the noticeable adsorption capabilities provided by the highly developed porous structure and the rich surface chemistry. Because of their versatility and properties the final material can be tailored to have specific properties suitable for a wide ...
Activated Carbons (AC) are traditionally produced by chemical or physical activation processes, frequently using biomass materials as precursors [1]. These procedures can be modified in order to create particular surface characteristics (both textural and chemical), so that the adsorption of a given organic or inorganic compound is optimized. Recently, the use of hydrothermal carbonization processes (HTC) to pr...
The specific application of activated carbons (AC) as adsorbents for gases and vapours depends on the properties of pollutants to be removed, but the performance of the AC depends on various properties. If their porosity is the main parameter in gas adsorption, the chemical nature of their surface plays a significant role in liquid phase interactions and in their usefulness as catalyst support materials. Of par...
EStudo da utilização de vários residuos agricolas para a produção de carvões activados
Adsorção de paracetamol em carvões activados
Adsorção de metformina em carvões activados
Estudo da influencia da lavagem de carvões activados em processos pós produção.
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