Preparation and SO2 sorption/desorption behavior of an ionic liquid supported on porous silica particles / Zhengmin Zhang in Industrial & engineering chemistry research, Vol. 48 N°4 (Février 2009)

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 48 N°4 (Février 2009) . - p. 2142–2148 Titre : Preparation and SO2 sorption/desorption behavior of an ionic liquid supported on porous silica particles Type de document : texte imprimé Auteurs : Zhengmin Zhang, Auteur ; Linbo Wu, Auteur ; Jie Dong, Auteur Année de publication : 2009 Article en page(s) : p. 2142–2148 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Ionic liquid Porous silica particles Impregnation-vaporization method Résumé : The ionic liquid 1,1,3,3-tetramethylguanidinium lactate (TMGL) was supported onto porous silica particles via a facile impregnation−vaporization method. The TMGL-supported particles gave high porosity and large specific surface area. The SO2 sorption/desorption properties of the silica-supported TMGL (TMGL−SiO2) were evaluated, and high SO2 sorption capacity and rate were achieved. Its capacity reached 0.6 g SO2/g TMGL in 15−30 min with pure SO2 gas and 0.15 g SO2/g TMGL in 17 h with a N2/SO2 mixture gas that contained 2160 ppm SO2. The SO2 concentration was reduced to 12.6 ppm after sorption. The TMGL−SiO2 system could be reused for many sorption/desorption cycles without change in its capacity. It was also characterized by good mechanical strength and thermal stability at temperature up to 130 °C. The SO2 sorbent system appears to be useful in gas desulfurization. [article] Preparation and SO2 sorption/desorption behavior of an ionic liquid supported on porous silica particles [texte imprimé] / Zhengmin Zhang, Auteur ; Linbo Wu, Auteur ; Jie Dong, Auteur . - 2009 . - p. 2142–2148. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N°4 (Février 2009) . - p. 2142–2148 Mots-clés : Ionic liquid Porous silica particles Impregnation-vaporization method Résumé : The ionic liquid 1,1,3,3-tetramethylguanidinium lactate (TMGL) was supported onto porous silica particles via a facile impregnation−vaporization method. The TMGL-supported particles gave high porosity and large specific surface area. The SO2 sorption/desorption properties of the silica-supported TMGL (TMGL−SiO2) were evaluated, and high SO2 sorption capacity and rate were achieved. Its capacity reached 0.6 g SO2/g TMGL in 15−30 min with pure SO2 gas and 0.15 g SO2/g TMGL in 17 h with a N2/SO2 mixture gas that contained 2160 ppm SO2. The SO2 concentration was reduced to 12.6 ppm after sorption. The TMGL−SiO2 system could be reused for many sorption/desorption cycles without change in its capacity. It was also characterized by good mechanical strength and thermal stability at temperature up to 130 °C. The SO2 sorbent system appears to be useful in gas desulfurization.

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