| 介孔分子筛MCM-41对铅离子吸附性能研究 |
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| 引用本文： | 王梅,吴凤,李华兰,王秀峰.介孔分子筛MCM-41对铅离子吸附性能研究[J].绵阳师范学院学报,2011,30(11):67-70. |
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| 作者姓名： | 王梅 吴凤 李华兰 王秀峰 |
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| 作者单位： | 绵阳师范学院化学与化学工程学院,四川绵阳,621000 |
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| 基金项目： | 绵阳师范学院学生科研项目 |
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| 摘 要： | 采用十六烷基三甲基溴化铵(CTAB)作模板剂,正硅酸乙脂(TEOS)为硅源,氨水(NH3.H2O)为碱性介质的条件下在常温下快速合成出了介孔分子筛MCM-41。采用X射线衍射(XRD)对合成样品进行了表征,XRD结果表明合成的MCM-41具备高的结构规整度。将该MCM-41作为吸附剂,对水中铅离子的吸附进行了研究。实验结果表明:MCM-41用量、吸附时间、吸附温度和pH值均影响其对铅离子的吸附率;其吸附动力学符合准二级动力学方程式;其等温吸附行为可以用Langmuir等温线来描述。
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| 关 键 词： | 介孔分子筛 MCM-41 吸附 铅 废水处理 |
On Adsorption for Lead Ion from Mesoporous Molecular Sieve MCM - 41 |
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| WANG Mei,WU Feng,LI Hua-lan,WANG Xiu-feng.On Adsorption for Lead Ion from Mesoporous Molecular Sieve MCM - 41[J].Journal of Mianyang Normal University,2011,30(11):67-70. |
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| Authors: | WANG Mei WU Feng LI Hua-lan WANG Xiu-feng |
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| Institution: | (Sch.of Chemistry & Chemical Engineering,Mianyang Normal University,Mianyang,Sichuan 621000)) |
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| Abstract: | Using cetyltrimethylammonium bromide （CTAB） surfactant as template, tetraethyl orthosilicate （TEOS） as silica source and ammonia（NH3 · H2O） as acidic medium, molecular sieve MCM -41 was synthesized at room temperature rapidly. The syntl.esized samples were characterized by powder X -ray diffraction （XRD）. XRD studies indicated the MCM -41 synthesized had highly ordered structure regularity. Using MCM - 41 as absorbent, the adsorption of Pb2~ in aqueous solution was studied. The experimental results showed that the amount of MCM -41, absorbent time,pH value and temperature affected the adsorption capacity of Pb^2＋ , the adsorption kinetics accord with the pseudo - second - order kinetic model and the isothermal adsorption behavior could be described by Langmuir equation. |
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| Keywords: | mesoporous molecular sieve MCM - 41 adsorption lead wastewater treatment |
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