Abstract
Nanoparticles of ferrites (Fe3O4, NiFe2O4, CuFe2O4, and MnFe2O4) were prepared by a reverse (water/oil) microemulsion method. The microemulsion system consisted of cetyltrimethylammonium bromide, 1-butanol, cyclohexane, and a metal salt solution. The procedure was carried out using aqueous ammonia as the coprecipitating agent. Nanosized particles were characterized by thermal analysis, X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, and pyridine adsorption. The NiFe2O4 sample exhibited narrow mesoporous pore size distribution and high surface area ≈233 m2/g. It achieved good adsorption activity towards the dibenzothiophene (DBT) compound (166.3 μmol/g of DBT adsorbent). The structural properties obtained were very interesting for potential applications in the desulfurization process in petroleum refining.
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Authors are indebted to the Science & Technology Development Fund (STDF Contract No. 1255), Egypt, for financial support.
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Zaki, T., Saed, D., Aman, D. et al. Synthesis and characterization of MFe2O4 sulfur nanoadsorbents. J Sol-Gel Sci Technol 65, 269–276 (2013). https://doi.org/10.1007/s10971-012-2933-1
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DOI: https://doi.org/10.1007/s10971-012-2933-1