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环境化学  2015 

硅基微/介孔材料吸附二硫化碳(CS2)的性能

Keywords: 微/介孔硅基材料,双孔分布,吸附,二硫化碳

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Abstract:

以聚甲基含氢硅氧烷(PMHS)和正硅酸乙酯(TEOS)为原料,在不同的PMHSTEOS质量比条件下合成了一系列具有微/介孔硅基材料.N2吸/脱附表征显示该材料具有微/介孔双孔分布的结构特征和较高的比表面积,并且随着PMHSTEOS质量比的变化而变化.其中,当PMHSTEOS质量比为13时硅基微/介孔材料具有最大的比表面积,达到783m2·g-1.XRD表征结果显示,该材料是无定形材料.材料对二硫化碳(CS2)的吸附性能的研究结果表明,PMHSTEOS质量比为13合成的硅基微/介孔材料对CS2的吸附量最大,静态吸附量达到762.76mg·g-1,动态吸附穿透时间达到35min.再生实验表明材料再生性良好,可重复使用.

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