Zirconium hydroxide as a reactive substrate for the removal of sulfur dioxide / Gregory W. Peterson in Industrial & engineering chemistry research, Vol. 48 N°4 (Février 2009)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 48 N°4 (Février 2009) . - pp. 1694–1698 Titre : Zirconium hydroxide as a reactive substrate for the removal of sulfur dioxide Type de document : texte imprimé Auteurs : Gregory W. Peterson, Auteur ; Christopher J. Karwacki, Auteur ; William B. Feaver, Auteur Année de publication : 2009 Article en page(s) : pp. 1694–1698 Note générale : Chemical enineering Langues : Anglais (eng) Mots-clés : Zirconium hydroxide Sulfur dioxide Temperature-programmed desorption X-ray photoelectron spectroscopy Résumé : Zirconium hydroxide [Zr(OH)4], with a surface area of 365 m2/g, was evaluated for its ability to remove SO2 from streams of air at room temperature. The SO2 removal capacity of Zr(OH)4 was ∼90 mg SO2 removed per cm3 bed volume, which is almost an order of magnitude greater than the value achieved for activated carbon and is more than twice the value achieved for activated carbon impregnated with 10% CuO. Temperature-programmed desorption results indicate that SO2 is strongly retained by Zr(OH)4. X-ray photoelectron spectroscopy results reveals the presence of sulfite (SO32−) species following reaction exposure, which suggests the formation of zirconium sulfite. Although the SO2 removal capacity (volume basis) of Zr(OH)4 is high, relative to that of impregnated activated carbon, only 10% of the stoichiometric hydroxyl groups are able to contribute to the removal of SO2. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801403h [article] Zirconium hydroxide as a reactive substrate for the removal of sulfur dioxide [texte imprimé] / Gregory W. Peterson, Auteur ; Christopher J. Karwacki, Auteur ; William B. Feaver, Auteur . - 2009 . - pp. 1694–1698. Chemical enineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N°4 (Février 2009) . - pp. 1694–1698 Mots-clés : Zirconium hydroxide Sulfur dioxide Temperature-programmed desorption X-ray photoelectron spectroscopy Résumé : Zirconium hydroxide [Zr(OH)4], with a surface area of 365 m2/g, was evaluated for its ability to remove SO2 from streams of air at room temperature. The SO2 removal capacity of Zr(OH)4 was ∼90 mg SO2 removed per cm3 bed volume, which is almost an order of magnitude greater than the value achieved for activated carbon and is more than twice the value achieved for activated carbon impregnated with 10% CuO. Temperature-programmed desorption results indicate that SO2 is strongly retained by Zr(OH)4. X-ray photoelectron spectroscopy results reveals the presence of sulfite (SO32−) species following reaction exposure, which suggests the formation of zirconium sulfite. Although the SO2 removal capacity (volume basis) of Zr(OH)4 is high, relative to that of impregnated activated carbon, only 10% of the stoichiometric hydroxyl groups are able to contribute to the removal of SO2. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801403h

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