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中文摘要：
用3-巯丙基三甲氧基硅烷（MPTMS）对13X分子筛表面进行修饰，采用XRD和FT—JR测试方法对功能化前后的分子筛结构进行表征，结果表明，功能化后分子筛在保持原有结构同时表面还接枝了对Ph^2＋离子有吸附能力的巯基基团。吸附实验表明，巯基功能化分子筛对水中Ph^2＋离子比原分子筛具有更强的吸附去除效果，饱和吸附容量和去除率提高近一倍。SH-13X对Ph^2＋离子的等温吸附符合Langmuir模型，最大吸附容量为47．01mg／g，吸附强度b为2．26。动力学分析表明SH-13X对Ph^2＋离子的吸附过程更符合准二级动力学模型，而且粒内扩散不是该吸附过程的主要吸附机制。溶液中的Ph“与嫁接在分子筛表面及孔口位置的-SH功能团形成配位络合物而去除。
英文摘要：
13X zeolite was modified by 3-mercaptopropyhrimethoxysilane （MPTMS）. The structure of materials before and after functionalization was investigated by X-ray powder diffraction （XRD） and fourier transform infrared spectroscopy （FT-IR）. The results show that the functionalized materials still kept the original structure and morphology, and at the same time the materials had grafted some thiol-groups which had strong binding ability for Pb^2＋ in aqueous solution. It is verified by the adsorption experiment that thiol-functional materials have better efficient treatment of Pb^2＋ than the raw materials. The sorption isotherm of Pb^2＋ on SH-13X zeolite followed the Langmuir model. The maximum sorption capacity was 47.01 mg/g and absorptive intensity was 2.26. Kinetic analysis gives out that the pseudo-second-order equation provided the best fit to experimental data, and intraparticle diffusion was not the dominate mechanism in this adsorption process. Pb^2＋ in aqueous solution was removed with thiol-ligands on the surfaces of zeolite and the entrances of holes.
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