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The dissolution kinetics of gibbsite in sodium hydroxide at ambient pressure / Henrik Grenman in Industrial & engineering chemistry research, Vol. 49 N° 6 (Mars 2010) 

Public ISBD [article]  in Industrial & 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