介孔氧化铝的结构调控及除氟性能研究

doi:10.11962/1006-4990.2019-0404

Abstract

Abstract:

Nano-alumina powder materials were prepared by hydrothermal reaction and high-temperature calcination by using sodium aluminate（NaAlO₂） and aluminum chloride（AlCl₃·6H₂O） as aluminum sources,and glucose,chitosan and CTAB as structure directing agents,respectively.The products were systematically characterized by the means of powder X-ray diffrac-tion（XRD）,scanning electron microscope（SEM）,N₂ adsorption and desorption,and Fourier infrared spectroscopy（FT-IR）. Results showed that all the products were γ-Al₂O₃ with mesoporous structure,which presented the nanoparticles morphology and good dispersion. Among them,γ-Al₂O₃ which regulated by glucose has a large specific surface area（437 m²/g） and pore volume （0.60 cm³/g）.The adsorption results of four kinds of mesoporous γ-Al₂O₃ towards F^- solution showed that the best defluorination effect was found in γ-Al₂O₃ adsorbent regulated by glucose.

Key words: mesoporous alumina, fluoride ions, adsorption, structure regulation, morphology

CLC Number:

TQ133.1

Xu Naicai,Shi Dandan,Li Sixia. Research on structure regulation and fluorine removal property of mesoporous alumina[J]. Inorganic Chemicals Industry, 2020, 52(6): 20-23.

Figures/Tables 7

References 12

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吸附剂	比表面积/（m²·g^-1）	孔体积/（cm³·g^-1）	平均孔径/nm
MA	190	0.54	9.7
MA-Chitosan	172	0.61	9.7+15.2
MA-CTAB	186	0.63	11.8
MA-Glucose	437	0.60	5.0

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Research on structure regulation and fluorine removal property of mesoporous alumina

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