REMOVAL OF NITROGEN COMPOUNDS FROM SIMULATED OIL WITH CH3COOH/ZnCl2 DEEP EUTECTIC SOLVENT

Abstract

Abstract: The CH3COOH-ZnCl2 deep eutectic solvent(DES) was prepared using mixed glacial acetic acid (CH3COOH) and zinc chloride (ZnCl2) by heating and analyzed by Fourier transform infrared spectroscopy (FT-IR) and 1H nuclear magnetic resonance (1H NMR) analysis. The denitrogenation performance was characterized using octane solution spiked with quinoline or indole as simulated oils. The results showed that the removal rates of quinoline and indole were 98.57% and 93.73%, respectively, when the molar ratio of CH3COOH to ZnCl2 was 10:1, the extraction time was 25 min, the mass ratio of simulated oil to DES is 5:1, and the extraction temperature was 30 ℃. After three times recoveries for DES，the denitrogenation rate of the quinoline simulated oil or the indole simulated oil can still reach 70% or more, respectively. In addition，the mechanism of nitrogen removal during denitrogenation by extraction were discussed.

Key words: acetic acid, zinc chloride, deep eutectic solvent, denitrogenation, quinoline, indole

CLC Number:

References

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