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Título : Adsorption of Asphaltenes at the Toluene-Silica Interface: A Kinetic Study
Autor : Acevedo, Sócrates
Ranaudo, María Antonieta
García, Coromoto
Castillo, Jimmy
Fernández, Alberto
Palabras clave : Asphaltenes
Asfaltenos
Adsorption
Adsorción
crude oil
petróleo
Fecha de publicación : 16-Jan-2003
Editorial : Energy & Fuel an american chemicla society Journal
Citación : Energy Fuels, 2003, 17 (2), pp 257–261
Resumen : The adsorption kinetics of asphaltenes at the toluene - silica interface has been measured for nine solution concentrations CS (from 5 to 3000 mgL-1) Results could be adjusted to an irreversible second-order adsorption kinetics, where the adsorption rate k was strongly dependent on concentration. Thus a large reduction in k was observed when CS was increased in the studied concentration range. This rate reduction was accounted for in terms of adsorption of aggregates formed in solution. The step - wise trends observed for the adsorption isotherms of asphaltenes on mineral surfaces, could be reproduced using the above k values.
URI : http://saber.ucv.ve/jspui/handle/123456789/6134
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