| 纳米二氧化硅/凹土复合材料的制备以及吸附性能 |
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| 引用本文： | 张国庆,尹振燕,王丽,赵彦军,李秀娟,姚超.纳米二氧化硅/凹土复合材料的制备以及吸附性能[J].现代化工,2012(1):46-49. |
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| 作者姓名： | 张国庆 尹振燕 王丽 赵彦军 李秀娟 姚超 |
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| 作者单位： | 鲁南煤化工研究院;济宁市产品质量监督检验所;山东卡松科技有限公司;常州大学石油化工学院 |
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| 基金项目： | 山东省优秀中青年科学家奖励基金计划(BS2010CL013);江苏省高校自然科学研究重大项目(09KJA430002);江苏省自然科学基金资助项目(BK2009748);江苏省科技支撑计划项目(BE2009099);2010年度高校科研成果产业化推进工程(JH10-53);江苏省产学研前瞻性联合研究项目(BY2010123) |
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| 摘 要： | 以硅酸钠为主要原料,用硫酸调节pH,通过液相沉淀法在凹土单晶表面原位生成纳米粒状二氧化硅,制备纳米二氧化硅/凹土复合粉体。利用XRD、TEM、TG-DTG、氮气吸附脱附曲线等方法对复合粉体进行表征。XRD表明,二氧化硅以非晶态的形式包覆在凹土表面,防止了凹土的团聚。TEM照片显示,包覆后的纳米二氧化硅粒径减小,粒度分布均匀,表面光滑。
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| 关 键 词： | 凹土 比表面 吸附-脱附曲线 孔径分布 表征 |
Preparation of SiO2/attapulgite nanoparticles and their adsorption properties |
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| ZHANG Guo-qing,YIN Zhen-yan,WANG Li,ZHAO Yan-jun,LI Xiu-juan,YAO Chao.Preparation of SiO2/attapulgite nanoparticles and their adsorption properties[J].Modern Chemical Industry,2012(1):46-49. |
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| Authors: | ZHANG Guo-qing YIN Zhen-yan WANG Li ZHAO Yan-jun LI Xiu-juan YAO Chao |
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| Affiliation: | 1.Lunan Research Institute of Coal Chemistry,Jining 272000,China;2.Jining Product Quality Supervision and Inspection Institute,Jining 272000,China;3.Shandong Kasong Science and Technology Co.,Ltd.,Jining 272005, China;4.College of Petroleum Engineering,Changzhou University,Changzhou 213164,China) |
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| Abstract: | Nanoparticles coated with silica were successfully synthesized via the liquid deposition method in which nanoparticles silica was produced on single crystal surface of attapulgite,using Na2SiO3 as the main raw material and sulfuric acid as the neutralization agent.The structures and properties of the prepared samples were studied by X-ray diffraction(XRD),Fourier transform infrared spectrometer(FTIR),transmission electron microscopy(TEM),Thermogravimetry-Dispiay transmission gererator(TG-DTG) and nitrogen adsorption-desorption isotherm.The XRD results show that there is non-crystal silica on the surface of nanoparticles,which prevents the nanoparticles from agglomerating.TEM images demonstrate that attapulgite coated with silica has smaller particle size,uniform size distribution and polished surface. |
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| Keywords: | attapulgite specific surface area adsorption-desorption isotherm pore size distribution characterization |
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