| Ce-MCM-22分子筛的合成与吸附动力学研究 |
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| 引用本文： | 成岳,苏晓渊,潘顺龙,李燕孙.Ce-MCM-22分子筛的合成与吸附动力学研究[J].环境科学与技术,2012,35(5):28-31. |
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| 作者姓名： | 成岳 苏晓渊 潘顺龙 李燕孙 |
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| 作者单位： | 1. 景德镇陶瓷学院材料学院,江西景德镇333003;江西省先进陶瓷材料重点实验室,江西景德镇333001
2. 扬州大学环境学院,江苏扬州,225000 |
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| 基金项目： | 江西省教育厅重点项目，景德镇陶瓷学院研究生创新专项资金 |
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| 摘 要： | 采用静态水热晶化法,以硅溶胶为硅源、六亚甲基亚胺(HMI)为模板剂,通过掺杂Ce合成了具有MWW层状结构的Ce-MCM-22分子筛。并利用粉末X-射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)等方法对其进行了表征,对其进行了吸附动力学的研究。研究表明,Ce-MCM-22吸附动力方程拟一级方程为y=-0.028 1x-0.136,R2=0.983 4。Ce-MCM-22吸附动力方程拟二级方程为y=0.465 7x+1.2005,R2=0.999 5,说明拟二级反应模型更能真实地反映分子筛吸附亚甲蓝溶液的反应机理。
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| 关 键 词： | Ce-MCM-22 合成 透射电镜 吸附动力学 |
Synthesis and Adsorption Kinetics of Ce-MCM-22 Molecular Sieve |
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| CHENG Yue
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SU Xiao-yuan
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PAN Shun-long
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LI Yan-sun.Synthesis and Adsorption Kinetics of Ce-MCM-22 Molecular Sieve[J].Environmental Science and Technology,2012,35(5):28-31. |
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| Authors: | CHENG Yue SU Xiao-yuan PAN Shun-long LI Yan-sun |
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| Institution: | 1,2(1.Jingdezhen Ceramic Institute School of Materials Science and Engineering Jingdezhen 333003,China; 2.Key Laboratory of Jiangxi Province for Advanced Ceramic Materials Jingdezhen 333001,China; 3.School of Environmental Science and Engineering,Yangzhou University,Yangzhou 225000,China) |
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| Abstract: | Ce-MCM-22 molecular sieve with MWW of layer structure was synthesized using static hydrothermal crystallization method,with silica sol as silicon source and hexamethylene imine(HMI) as template agent.Molecular sieve of Ce-MCM-22 was characterized by power X-ray diffraction(XRD),scanning electron microscopy(SEM) and transmission electron microscopy(TEM),and its adsorption kinetics were studied.Results showed that relative to the pseudo-first reaction model,Ce-MCM-22 adsorption is a dynamic equation,which fit well with the pseudo-second order equation,and more truly reflect the response of molecular sieve adsorption of methylene blue solution. |
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| Keywords: | Ce-MCM-22 synthesis scanning electron microscopy(SEM) adsorption kinetics |
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