Preparação e caracterização de carvão ativado quimicamente a partir da casca de arroz

dc.date.accessioned2011-02-10T16:33:32Z
dc.date.accessioned2019-05-28T12:10:43Z
dc.date.available2011-02-10T16:33:32Z
dc.date.available2019-05-28T12:10:43Z
dc.date.created2011-02-10T16:33:32Z
dc.date.issued2007
dc.identifierSCHETTINO JR., Miguel A. et al. Preparação e caracterização de carvão ativado quimicamente a partir da casca de arroz. Quím. Nova, São Paulo, v. 30, n. 7, p. 1663-1668, 2007. Disponível em: <http://www.scielo.br/pdf/qn/v30n7/30.pdf>. Acesso em: 10 fev. 2011.
dc.identifier0100-4042
dc.identifierhttp://repositorio.ufes.br/handle/10/588
dc.identifier10.1590/S0100-40422007000700031
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/2867175
dc.description.abstractThis work consists in a study about the chemical activation of charred rice hulls using NaOH as the activation agent. The influence of the naturally-occurring silica was particularly evidenced. X-ray diffraction patterns showed the formation of sodium carbonate and silicates in the activated samples, whereas thermogravimetric curves revealed a strong reduction in the ash content of these samples after washing with water. Nitrogen adsorption data indicated a microporosity development only in the washed samples, with BET surface area values of 450 and 1380 m2/g achieved for the samples activated at 800 °C starting from the precursor with or without silica, respectively.
dc.languagepor
dc.rightsopen access
dc.subjectCarbono ativado
dc.subjectCasca de arroz
dc.subjectActivated carbons
dc.subjectRice hulls
dc.subjectChemical activation
dc.titlePreparação e caracterização de carvão ativado quimicamente a partir da casca de arroz
dc.typeArtículos de revistas


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