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

Abstract

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

CLC Number:

TQ132.2

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.

Figures/Tables 6

References 13

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

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