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MCM-41介孔分子筛的合成及其对铜离子的吸附性能

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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[J]. 环境工程学报, 2014, 8(2): 513-519.
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[J]. 环境工程学报, 2014, 8(2): 513-519.
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Zhu Wenjie, Li Mingming, Ma Wenhui, Zhou Yang, Wu Jijun, Yu Jie, Xie Keqiang. Synthesis of MCM-41 mesoporous sieves and their adsorption performance of Cu2+[J]. Chinese Journal of Environmental Engineering, 2014, 8(2): 513-519.
Citation: Zhu Wenjie, Li Mingming, Ma Wenhui, Zhou Yang, Wu Jijun, Yu Jie, Xie Keqiang. Synthesis of MCM-41 mesoporous sieves and their adsorption performance of Cu2+[J]. Chinese Journal of Environmental Engineering, 2014, 8(2): 513-519.
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MCM-41介孔分子筛的合成及其对铜离子的吸附性能

  • 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

  • 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）

  • 中图分类号: X756;X131.2

Synthesis of MCM-41 mesoporous sieves and their adsorption performance of Cu2+

  • 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

  • Fund Project:

  • 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。
    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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  • 收稿日期:  2013-02-27
  • 刊出日期:  2014-01-27

MCM-41介孔分子筛的合成及其对铜离子的吸附性能

  • 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
  • 收稿日期:  2013-02-27
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）

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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