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Published on: July 9, 2015
Novel Gemini ionic liquid for oxidative desulfurization of gas oil
Hoda A Mohammed1, Hamida Y Mostafa2, Dina M Abd El-Aty3
1Analysis and Evaluation Department, Egyptian Petroleum Research Institute (EPRI), 1 Ahmed El- Zomor St., Nasr City, Cairo, 11727, Egypt.
Abstract:
The N1,N1,N3,N3-tetramethyl -N1,N3-diphenylpropane-1,3-diaminium dichloride ionic liquid (ILc) is an environmentally friendly catalyst for oxidative-extractive desulfurization of gas oil (sulfur content = 2400 ppm) in the presence of H2O2 as an oxidizing agent. The precise structure of the prepared IL was confirmed using FT-IR spectroscopy, and1H-NMR. The reaction temperature, IL ratios, H2O2 dosage, and reaction time were studied to assess their effects on the desulfurization efficiency. The thermodynamic parameters of the oxidation reaction were determined. A desulfurization efficiency of 84.7% was obtained after the extractive desulfurization process using acetonitrile as an organic solvent at a solvent to feed ratio of 1:1 (v/v). Furthermore, the prepared IL may be reused for at least six cycles without any significant change in its desulfurization performance or chemical structure, which confirms its high reusability.
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