Open AccessMagnetic composites Fe 3 O 4 @SiO 2 @PILs as sorbents for efficient denitrogenation of fuel oil
Author(s) -
Wang Feng,
Li Jie,
Xu Long,
Jiang Feng,
Zhang Jianfeng
Publication year - 2019
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2019.0245
Subject(s) - materials science , composite material , chemical engineering , engineering
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.