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Preparation and SO2 Sorption/Desorption Behavior of an Ionic Liquid Supported onto Porous Silica Particles. Ind. Eng. Chem. Res., 2009, 48 (4), 2142-2148
作者:Zhengmin Zhang, Linbo Wu*, Jie Dong, Bo-Geng Li*, Shiping Zhu*.
關鍵字:ionic liquid ,SO2 sorption capacity , gas desulfurization
論文來源:期刊
具體來源:Ind. Eng. Chem. Res., 2009, 48 (4), 2142-2148
發(fā)表時間:2009年

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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