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| Title: | Adsorption of Asphaltenes at the Toluene-Silica Interface: A Kinetic Study |
| Authors: | Acevedo, Sócrates
Ranaudo, María Antonieta
García, Coromoto
Castillo, Jimmy
Fernández, Alberto |
| Keywords: | Asphaltenes
Asfaltenos
Adsorption
Adsorción
crude oil
petróleo |
| Issue Date: | 16-Jan-2003 |
| Publisher: | Energy & Fuel an american chemicla society Journal |
| Citation: | Energy Fuels, 2003, 17 (2), pp 257–261 |
| Abstract: | 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://hdl.handle.net/10872/6134 |
| Appears in Collections: | Artículos Publicados
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