| MCM-41介孔分子筛的合成及其对铜离子的吸附性能简 |
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| 引用本文： | 朱文杰,李明明,马文会,周阳,伍继君,于洁,谢克强.MCM-41介孔分子筛的合成及其对铜离子的吸附性能简[J].环境工程学报,2014,8(2):513-519. |
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| 作者姓名： | 朱文杰 李明明 马文会 周阳 伍继君 于洁 谢克强 |
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| 作者单位： | 1. 昆明理工大学环境科学与工程学院, 昆明 650093;2. 昆明理工大学真空冶金国家工程实验室, 昆明 650093;2. 昆明理工大学真空冶金国家工程实验室, 昆明 650093;2. 昆明理工大学真空冶金国家工程实验室, 昆明 650093;2. 昆明理工大学真空冶金国家工程实验室, 昆明 650093;2. 昆明理工大学真空冶金国家工程实验室, 昆明 650093;1. 昆明理工大学环境科学与工程学院, 昆明 650093;2. 昆明理工大学真空冶金国家工程实验室, 昆明 650093;2. 昆明理工大学真空冶金国家工程实验室, 昆明 650093 |
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| 基金项目： | 国家自然科学基金资助项目（50903041，21307046）；昆明理工大学分析测试基金资助项目（2011300） |
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| 摘 要： | 以微硅粉为硅源，CTAB和PEG-6000为模板剂，合成MCM-41介孔分子筛。采用XRD、N2吸附-脱附曲线、FTIR以及TEM表征了其结构、比表面积、孔径分布及晶体形貌，并且以该样品为吸附剂，对含Cu2+的溶液进行了静态吸附实验。结果表明，以微硅粉为硅源成功合成了具有典型六方排列孔道结构的MCM-41，其比表面积为869.5 m2/g，孔容为0.97 cm3/g，平均孔径为3.3 nm；溶液pH为5~6时，MCM-41对Cu2+的去除效果最好；MCM-41对Cu2+的最大吸附吸附容量36.3 mg/g；MCM-41对Cu2+的吸附性能符合Langmuir吸附方程的特征。动力学研究表明，该过程符合准二级动力学模型。
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| 关 键 词： | 微硅粉 MCM-41分子筛 吸附 铜离子 动力学 |
Synthesis of MCM-41 mesoporous sieves and their adsorption performance of Cu2+ |
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| Zhu Wenjie,Li Mingming,Ma Wenhui,Zhou Yang,Wu Jijun,Yu Jie and Xie Keqiang.Synthesis of MCM-41 mesoporous sieves and their adsorption performance of Cu2+[J].Techniques and Equipment for Environmental Pollution Control,2014,8(2):513-519. |
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| Authors: | Zhu Wenjie Li Mingming Ma Wenhui Zhou Yang Wu Jijun Yu Jie and Xie Keqiang |
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| Institution: | 1. Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;2. National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, China;2. National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, China;2. National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, China;2. National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, China;2. National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, China;1. Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;2. National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, China;2. National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, China |
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| Abstract: | The MCM-41 mesoporous sieves were successfully synthesized using the silica fume as silica source, and CTAB, PEG-6000 as template agents. The as-synthesized materials were characterized by XRD, N2 adsorption-desorption, FTIR and TEM. The results indicate that the prepared material has the typical well-ordered hexagonal array of pore structure, with surface area of 869.5 m2/g, pore volume of 0.97 cm3/g and ca. pore diameter of 3.3 nm. The adsorption performance of Cu2+ in water solution was studied in static experiments with the MCM-41 mesoporous sieves as adsorbent. The influences of solution pH value, adsorbent dosage and adsorption time were investigated. It is showed that the effect of removal of Cu2+ is best when the value of pH is between 5 and 6. Langmuir equation may be better to describe the adsorption characteristics of Cu2+ onto MCM-41, and the static adsorption capacity is 36.3 mg/g. The kinetic experimental data are correlated with pseudo-second-order kinetic model. |
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| Keywords: | silica fume MCM-41 adsorption Cu2+ kinetics |
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