Abstract： Ionic liquids 1-hexadecyl -3-methylimidazolium chloride monohydrate was utilized for surface modification of natural zeolites. The modified zeolites were used in adsorption of Cr（VI）. The effect of adding amount of ionic liquid, reacting time and pH condition was studied. The modified zeolites were characterized by XRD and IR. The results indicate that the adsorption effect of Cr（VI） by low ionic liquid concentration of 0.3 mol/L is not obvious. The effect of adding amount of ionic liquid is excellent when the concentration is greater than 0.9 mol/L. Acidic conditions are conducive to the adsorption of Cr（VI） by the modified zeolite. The adsorption of Cr（VI） by the ionic liquid modified zeolite with ionic liquid concentrations of 0.6 and 0.9 mol/L reaches equilibrium at 240 and 8 min respectively.

Keywords: modified zeolite; ionic liquid; adsorption

中图分类号：TB34         文献标志码：A

文章编号：1008-5548(2015)01-0046-06

DOI:10.13732/j.issn.1008-5548.2015.01.010

收稿日期：2014-06-13， 修回日期：2014-06-30，在线出版时间：2015-03-02。

基金项目：国家国际科技合作专项，编号：S2014ZR0062；北京市青年英才计划项目，编号：YETP0634。

第一作者简介：刘梦（1992—），女，本科生，研究方向为环境矿物材料。E-mail：1109985239@qq.com。

通信作者简介：吕国诚（1981—），男，博士，副教授，研究方向为环境矿物材料。 E-mail：guochenglv@cugb.edu.cn。