[article] 
inIndustrial & engineering chemistry research > Vol. 49 N° 6 (Mars 2010) . - pp. 2600–2607

Titre :	The dissolution kinetics of gibbsite in sodium hydroxide at ambient pressure
Type de document :	texte imprimé
Auteurs :	Henrik Grenman, Auteur ; Tapio Salmi, Auteur ; Dmitry Yu, Auteur
Année de publication :	2010
Article en page(s) :	pp. 2600–2607
Note générale :	Industrial Chemistry
Langues :	Anglais (eng)
Mots-clés :	Dissolution Kinetics Gibbsite Sodium Hydroxide Ambient Pressure
Résumé :	The dissolution kinetics of pure gibbsite in concentrated sodium hydroxide solutions was studied. The experiments were performed under ambient pressure and at 60−85 °C. The changes in morphology of the solid phase were studied during the reaction by particle size, porosity, and surface area measurements as well as scanning electron microscopy. Reaction rates were observed to be strongly dependent on temperature and hydroxide concentration. Several kinetic models, based on different representation of the surface area of gibbsite, were compared to the experimental data and a good correlation between a model incorporating rough/porous geometry and the experimental data was obtained.
ISSN :	0888-5885
En ligne :	http://pubs.acs.org/doi/abs/10.1021/ie901803v

[article] The dissolution kinetics of gibbsite in sodium hydroxide at ambient pressure [texte imprimé] / Henrik Grenman, Auteur ; Tapio Salmi, Auteur ; Dmitry Yu, Auteur . - 2010 . - pp. 2600–2607.
Industrial Chemistry
Langues : Anglais (eng)
in Industrial & engineering chemistry research > Vol. 49 N° 6 (Mars 2010) . - pp. 2600–2607

Mots-clés :	Dissolution Kinetics Gibbsite Sodium Hydroxide Ambient Pressure
Résumé :	The dissolution kinetics of pure gibbsite in concentrated sodium hydroxide solutions was studied. The experiments were performed under ambient pressure and at 60−85 °C. The changes in morphology of the solid phase were studied during the reaction by particle size, porosity, and surface area measurements as well as scanning electron microscopy. Reaction rates were observed to be strongly dependent on temperature and hydroxide concentration. Several kinetic models, based on different representation of the surface area of gibbsite, were compared to the experimental data and a good correlation between a model incorporating rough/porous geometry and the experimental data was obtained.
ISSN :	0888-5885
En ligne :	http://pubs.acs.org/doi/abs/10.1021/ie901803v