气溶胶辅助法合成球形氧化镁及其吸附性能研究

doi:10.11962/1006-4990.2019-0159

无机盐工业 ›› 2020, Vol. 52 ›› Issue (1): 39-43.doi: 10.11962/1006-4990.2019-0159

气溶胶辅助法合成球形氧化镁及其吸附性能研究

柴政泽¹,叶俊伟^1,²(),田其哲¹,史磊¹,宁桂玲^1,²()

^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 116024
^2. 辽宁省硼镁特种功能材料制备与应用技术工程实验室

收稿日期:2019-07-19 出版日期:2020-01-10 发布日期:2020-02-26
通讯作者: 叶俊伟,宁桂玲
作者简介:柴政泽（1993— ）,男,硕士生,研究方向为盐湖镁资源高值利用。
基金资助:
国家自然科学基金项目(U1607101);国家自然科学基金项目(U1808210)

Aerosol-assisted synthesis of spherical magnesium oxide and its adsorption properties

Chai Zhengze¹,Ye Junwei^1,²(),Tian Qizhe¹,Shi Lei¹,Ning Guiling^1,²()

^1. State Key Laboratory of Fine Chemicals,School of Chemical Engineering,Dalian University of Technology,Dalian,116024,China
^2. Engineering Laboratory of Boric and Magnesium Functional Material Preparative and Applied Technology of Liaoning Province

Received:2019-07-19 Online:2020-01-10 Published:2020-02-26
Contact: Ye Junwei,Ning Guiling

摘要/Abstract

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。

关键词: 球形氧化镁, 气溶胶, 吸附

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.

Key words: spherical magnesium oxide, aerosol, adsorption

中图分类号:

TQ132.2

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.

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.

图/表 6

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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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