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| 超声法制备纳米有机膨润土及其吸附性能研究 | |
| 引用本文： | 李月,金利,朱洪彬,杨盛春. 超声法制备纳米有机膨润土及其吸附性能研究[J]. 化工科技, 2013, 21(2): 13-16,20 |
| 作者姓名： | 李月 金利 朱洪彬 杨盛春 |
| 作者单位： | 1. 大理学院药学与化学学院,云南大理 671000;营口市环境监测中心站,辽宁 营口 115003 2. 中国石油吉林石化公司有机合成厂,吉林吉林,132021 3. 中国石油吉林石化公司 炼油厂,吉林吉林,132021 4. 大理学院药学与化学学院,云南大理,671000 |
| 基金项目： | 云南省科技厅创新团队项目,州院共建洱海治理项目 |
| 摘 要： | 在超声作用下,以十四烷基三甲基溴化铵对膨润土进行改性,制备了纳米有机膨润土。通过红外光谱（FTIR）、X-射线衍射（XRD）对纳米有机膨润土进行表征。结果表明有机改性剂进入膨润土层间,层间距由L38nm增大为2．10nm。实验测试了该材料对品绿的吸附性能,结果显示在25℃,对品绿的最大理论吸附量为333．97mg／g,高于原土的最大理论吸附量243．21mg／g。用不同模型对吸附等温线及动力学数据进行了拟合,结果表明准二级动力学方程所得参数更为合理,更符合实验数据,等温吸附平衡更符合Langmuir模型。 |
| 关 键 词： | 纳米有机膨润土 吸附 品绿 动力学 吸附等温线 |
Study on preparation of nano-organo bentonite by ultrasonic method and its adsorption performance |
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| Li Yue , Jin Li , Zhu Hongbin , Yang Shengchun. Study on preparation of nano-organo bentonite by ultrasonic method and its adsorption performance[J]. Science & Technology In Chemical Industry, 2013, 21(2): 13-16,20 | |
| Authors: | Li Yue Jin Li Zhu Hongbin Yang Shengchun |
| Affiliation: | 1(1.Dali University,Dali,671000,China;2.Yingkou Center Station of Environmental Monitoring,Yingkou,115003,China;3.Organic Synthesis Plant of Jilin Petrochemical Co.Ltd.,PetroChina,Jilin,132021,China;4.Oil Refinery of Jilin Petrochemical Co.Ltd.,PetroChina,Jilin 132021,China) |
| Abstract: | The nano-organo bentonite was prepared by modification of bentonite with tetradecyltrime- thylammonium bromide. The modifying process was conducted by ultrasonic method. The results showed that the organic modifier was intercalated into the bentonite interlayer, and the basal spacing was increased {roml. 38 nm to 2.10 nm. The experiments of adsorbing malachite green by using this adsorbent were conducted. The highest adsorption capacity （qm） of nano-organo bentonite was 333.97 mg/g while for bentonite was 243.21 mg/g at 25℃. The adsorption isotherm and kinetic data were modeled. The pseudo-second order gave reasonable parameters and could correlate the kinetic data well. The equilibrium data could be well described by Langmuir isotherm mode. |
| Keywords: | Nano-organo bentonite Adsorption Malachite green Kinetics Adsorption isotherm |
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