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| Ce-MCM-48分子筛的合成与吸附动力学研究 | |
| 引用本文： | 潘健民,成岳,魏运洋.Ce-MCM-48分子筛的合成与吸附动力学研究[J].硅酸盐通报,2012,31(4):920-924. |
| 作者姓名： | 潘健民 成岳 魏运洋 |
| 作者单位： | 1. 上海工程技术大学化学与化工学院,上海201620;南京理工大学化工学院,南京210094 2. 景德镇陶瓷学院材料学院,景德镇333403;江西省先进陶瓷材料重点实验室,景德镇333001 3. 南京理工大学化工学院,南京,210094 |
| 摘 要： | 以硅溶胶为硅源、十六烷基三甲基溴化铵(CTAB)为模板剂,采用物质的量配比为Ce2O3∶SiO2∶CTAB∶H2O∶NaOH=0.015∶1∶0.45∶60∶0.48,静态水热合成了Ce-MCM-48分子筛,采用XRD、SEM(EDS)、TEM等方法对其进行了表征,并对其进行了吸附动力学研究。结果表明,本文成功合成了Ce-MCM-48介孔分子筛,其拟一级吸附动力学方程为lg(qe-q)=-0.4365-0.01026t,R2=0.9289,拟二级吸附动力学方程为t/qt=0.4027+0.27818t,R2=0.9999,相对拟一级反应模型,这个结果相关性更好,更能真实地反映分子筛吸附亚甲蓝溶液的反应机理。 |
| 关 键 词： | Ce-MCM-48 表征 亚甲蓝 吸附动力学 |
Study on Synthesis and Adsorption Kinetics of Ce-MCM-48 Molecular Sieve |
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| PAN Jian-min , CHENG yue , WEI Yun-yang.Study on Synthesis and Adsorption Kinetics of Ce-MCM-48 Molecular Sieve[J].Bulletin of the Chinese Ceramic Society,2012,31(4):920-924. | |
| Authors: | PAN Jian-min CHENG yue WEI Yun-yang |
| Affiliation: | 1.College of Chemistry and Chemical Engineering,Shanghai University of Engineering Science,Shanghai 201620,China; 2.Chemical engineering institute,Nanjing University of Science and Technology,Nanjing 210094,China; 3.School of Materials Science and Engineering,Jingdezhen Ceramic Institute,Jingdezhen 333403; 4.Key Laboratory for Advanced Ceramic Materials of Jiangxi Province,Jingdezhen 333001) |
| Abstract: | Ce-MCM-48molecular sieve with MWW of layer structure was synthesized using the static hydrothermal method,silica sol as silicon source,cetyl trimethyl ammonium bromide(CTAB) as template agent.Molecular sieve of Ce-MCM-48 was characterizated by power X-ray diffraction(XRD),scanning electron microscopy(SEM),energy dispersive X-ray(EDS),transmission electron microscopy(TEM).Ce-MCM-48 were used to adsorb the methylene blue(MB) in wastewater by a static method in order to study the absorption characteristics.The results show that,The target productobtained is the adsorption of MB follow the first-order kinetic model:lg(qe-q)=-0.4365-0.01026t,R2= 0.9289,and the second-order kinetic model:t/qt=0.4027+ 0.27818t,R2= 0.9999,the second-order kinetic model reflect the mechanism of Ce-MCM-48 adsorbed methylene blue more truly. |
| Keywords: | Ce-MCM-48 characterization methylene blue(MB) adsorption kinetics |
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