Magnetic composites Fe 3 O 4 @SiO 2 @PILs as sorbents for efficient denitrogenation of fuel oil

Micro & nano letters

article

Feng Wang¹  Jie Li¹  Long Xu¹  Feng Jiang²  Jianfeng Zhang¹ 

[1] Faculty of Materials Science and Chemical Engineering, Ningbo University;Department of Pharmacy, Gannan Medical University

关键词: chemical engineering;    purification;    recycling;    fuel processing;    petroleum;    coatings;    composite materials;    Fourier transform infrared spectra;    silicon compounds;    iron compounds;    thermal analysis;    scanning electron microscopy;    organic compounds;    X-ray diffraction;    adsorption;    magnetic particles;    magnetic composites;    fuel oil;    polymeric ionic liquids grafting;    Fourier transform infrared spectroscopy;    thermogravimetric analysis;    X-ray diffraction;    scanning electron microscopy;    morphological properties;    quinoline;    diesel;    liquid fuel purification;    organic N-compounds;    adsorptive denitrogenation efficiency;    structural characterisation;    recyclability;    stability properties;    silica-coatings;    Fe3O4-SiO2;   

DOI  :  10.1049/mnl.2019.0245

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

In this work, the study of synthesis and denitrogenation of magnetic polymeric ionic liquids (PILs) for N-compounds in simulated oils and diesel are reported. Three functionalised magnetic particles, Fe 3 O 4 @SiO 2 @PILs with side alkyl chain of C2, C4 and C6, respectively, were prepared by grafting PILs on the surface of silica-coated Fe 3 O 4 . Fourier transform infrared spectra, thermogravimetric analysis, X-ray diffraction and scanning electron microscopy were carried out to characterise the structure of Fe 3 O 4 @SiO 2 @PILs. It has shown that Fe 3 O 4 @SiO 2 @ PILs possess precious merits for sorbents, such as regular morphology, good stability and magnetic properties. Denitrogenation experiments of simulated oils demonstrate that Fe 3 O 4 @SiO 2 @ PILs show better denitrogenation efficiency of basic N-compounds than neutral N-compounds. The effects of temperature, reaction times, ratio of reagent to oil on denitrogenation for simulated oils were explored, and 92.1% denitrogenation efficiency was obtained to remove quinoline from simulated oils. Denitrogenation of Fe 3 O 4 @SiO 2 @PILs in diesel leads to 84.3% denitrogenation efficiency, and it can remain 82.5% denitrogenation efficiency after five times of recycles. Compared with other similar sorbents, Fe 3 O 4 @SiO 2 @PILs show competitive performances to eliminate organic N-compounds. It is hopeful that Fe 3 O 4 @SiO 2 @PILs can be promising sorbents for purification of liquid fuel by adsorptive denitrogenation.

【 授权许可】

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