| 气溶胶辅助法合成球形氧化镁及其吸附性能研究 |
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| 引用本文： | 柴政泽,叶俊伟,田其哲,史磊,宁桂玲.气溶胶辅助法合成球形氧化镁及其吸附性能研究[J].无机盐工业,2020,52(1):39-43. |
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| 作者姓名： | 柴政泽 叶俊伟 田其哲 史磊 宁桂玲 |
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| 作者单位： | 1. 大连理工大学化工学院,精细化工国家重点实验室,辽宁大连 1160242. 辽宁省硼镁特种功能材料制备与应用技术工程实验室 |
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| 基金项目： | 国家自然科学基金项目(U1607101);国家自然科学基金项目(U1808210) |
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| 摘 要： | 以氯化镁为镁源,尿素为沉淀剂,采用气溶胶辅助法制备了球形氧化镁。利用X射线衍射(XRD)、扫描电镜(SEM)、红外光谱(IR)和氮气吸附-脱附等技术手段对不同反应温度下制备的前驱体和氧化镁样品进行了表征。实验结果表明:制备的球形氧化镁比表面积为36 m^2/g,平均孔径为34 nm,总孔容为0.26 cm^3/g;其对刚果红的吸附符合伪二级动力学,且5 min内达到吸附平衡;吸附等温线符合Langmuir模型,饱和吸附量为764.91 mg/g。
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| 关 键 词： | 球形氧化镁 气溶胶 吸附 |
| 收稿时间： | 2019-07-19 |
Aerosol-assisted synthesis of spherical magnesium oxide and its adsorption properties |
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| Chai Zhengze,Ye Junwei,Tian Qizhe,Shi Lei,Ning Guiling.Aerosol-assisted synthesis of spherical magnesium oxide and its adsorption properties[J].Inorganic Chemicals Industry,2020,52(1):39-43. |
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| Authors: | Chai Zhengze Ye Junwei Tian Qizhe Shi Lei Ning Guiling |
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| Affiliation: | 1. State Key Laboratory of Fine Chemicals,School of Chemical Engineering,Dalian University of Technology,Dalian,116024,China2. Engineering Laboratory of Boric and Magnesium Functional Material Preparative and Applied Technology of Liaoning Province |
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| Abstract: | Spherical magnesium oxide（MgO） was prepared by aerosol-assisted method using MgCl2·6H2O as the magnesium source and urea as the precipitant.Precursor particles and MgO samples synthesized at different reaction temperatures were studied by means of X-ray diffraction（XRD）,scanning electron microscopy（SEM）,infrared spectroscopy（IR） and nitrogen adsorption-desorption.The experimental results indicated that the prepared spherical MgO had a specific surface area of 36 m 2/g,an average pore diameter of 34 nm and a total pore volume of 0.26 cm 3/g.The adsorption of Congo red accorded with pseudo-secondary kinetics and reached adsorption equilibrium within 5 min.The adsorption isotherm conformed to the Langmuir model and the saturated adsorption capacity was 764.91 mg/g. |
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| Keywords: | spherical magnesium oxide aerosol adsorption |
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