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Synthesis and characterization of magnesium hydroxide using a bvubbling setup / X. Li in Industrial & engineering chemistry research, Vol. 48 N°2 (Janvier 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N°2 (Janvier 2009) . - p. 763–768 Titre : Synthesis and characterization of magnesium hydroxide using a bvubbling setup Type de document : texte imprimé Auteurs : X. Li, Auteur ; G. B. Ma, Auteur ; Y. Y. Liu, Auteur Année de publication : 2009 Article en page(s) : p. 763–768 Note générale : chemical engineering Langues : Anglais (eng) Mots-clés : Magnesium  --  Hydroxide  -Synthesis  --Characterization Résumé : Magnesium hydroxide [MH] with porous nanoplates were synthesized from boric magnesium fertilizer (MgSO4·7H2O), using a large bubbling setup designed by the authors. The regular hexagonal plates of MH with a smaller specific area were formed after hydrothermal treatment. The effects of various operating variables, including the ammonia flow rate, reaction temperature, magnesium source, particle sizes, and dispersion properties of the synthesis products were investigated. X-ray diffraction, scanning electron microscopy, laser particle size analyzer, and thermogravimetric analyzer have been employed to characterize these products. The results showed that the mean particle size (D50) of the MH was about 2 μm, and products were loose enough for filtering. The diffraction intensity of the (001) direction was higher than the (101) direction. The Mg2+ conversion in the continuous setup reached 95% and the decomposition temperature of products was 370 °C. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801306f [article] Synthesis and characterization of magnesium hydroxide using a bvubbling setup [texte imprimé] / X. Li, Auteur ; G. B. Ma, Auteur ; Y. Y. Liu, Auteur . - 2009 . - p. 763–768. chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N°2 (Janvier 2009) . - p. 763–768 Mots-clés : Magnesium  --  Hydroxide  -Synthesis  --Characterization Résumé : Magnesium hydroxide [MH] with porous nanoplates were synthesized from boric magnesium fertilizer (MgSO4·7H2O), using a large bubbling setup designed by the authors. The regular hexagonal plates of MH with a smaller specific area were formed after hydrothermal treatment. The effects of various operating variables, including the ammonia flow rate, reaction temperature, magnesium source, particle sizes, and dispersion properties of the synthesis products were investigated. X-ray diffraction, scanning electron microscopy, laser particle size analyzer, and thermogravimetric analyzer have been employed to characterize these products. The results showed that the mean particle size (D50) of the MH was about 2 μm, and products were loose enough for filtering. The diffraction intensity of the (001) direction was higher than the (101) direction. The Mg2+ conversion in the continuous setup reached 95% and the decomposition temperature of products was 370 °C. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801306f