Abstract
With the rapid growth in fuel demand, deep desulfurization of fuel oil is vitally necessary for the sake of health and environmental protection. In this work, a kind of magnetic ionic liquid supported silica is prepared by a facile ball milling method, and applied in the aerobic oxidative desulfurization of organosulfurs in fuel. The experimental results indicated that ball milling procedure can increase the specific surface area of samples, which is beneficial to oxidative desulfurization process. Under the optimal reaction conditions, the prepared materials can have an entire removal of aromatic sulfur compounds as well as a good recycling ability. Moreover, the introduction of Fe3O4 did not decline the desulfurization performance, but help the catalyst to be easily separated after reaction.
Highlights
With the rapid development of the automobile industry, the demand for fuel oil was greatly increased in the past decades
C–H stretching vibration peaks of ionic liquid cations appeared in the range of 2800 to 2900 cm−1
These results indicated that the ionic liquid [C16 mim]3 PW12 O40 was successfully introduced to the SiO2
Summary
With the rapid development of the automobile industry, the demand for fuel oil was greatly increased in the past decades. Various kinds of materials have been applied in the ODS process, including organic acids, inorganic acids, and peroxide materials [15] These homogeneous catalysts exhibit high activity, it is difficult for them to be separated from the ODS system after reaction. Due to the high lattice energy, most POMs materials have poor dispersibility in organic solvents, resulting in low activity in ODS process [26,27] To solve this problem, Li’s group [25,28,29] designed a series of ionic liquids (ILs) with organic cation and POMs-based anion to improve the interface between the catalyst and oil phase, promoting the desulfurization performance. The experimental results demonstrated that the sample C16 PW/SiO2 -Fe-BM exhibited good desulfurization activity, which can be quickly separated after reaction
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