In order to lower desulfurization cost, the NaBH₄ preparation via NaBO₂ electroreduction was introduced into the integrated process of extraction and reductive desulfurization. Accordingly, a novel desulfurization method was developed where NaBH₄ can be recycled at the same time as desulfurization. The process of NaBH₄ preparation via NaBO₂ electroreduction was analyzed by cyclic voltammetry and the effect of pulse parameters on desulfurization efficiency was optimized by orthogonal experiments. Under optimal conditions desulfurization efficiency of more than 97 % was obtained for model fuel oil. Desulfurization mechanism and kinetics was probed. Results showed that the desulfurization of DBT should proceed over direct cleavage of CS bond and desulfurization reaction could be treated as pseudo-first-order reaction. Furthermore, the structures of original and recycled ionic liquids (ILs) were analyzed by nuclear magnetic resonance and the desulfurization performance of the recycled ILs was also investigated. Results showed that ILs maintained their original structures after regeneration and displayed good reusability. In summary, the novel desulfurization process is feasible and promising.

为了降低脱硫成本，将通过NaBO ₂电还原制备的NaBH ₄引入到萃取和还原脱硫的综合过程中。因此，开发了一种新型的脱硫方法，其中NaBH ₄可以在脱硫的同时再循环。通过NaBO ₂制备NaBH ₄的过程通过循环伏安法分析电还原反应，并通过正交实验优化了脉冲参数对脱硫效率的影响。在最佳条件下，模型燃料油的脱硫效率超过97％。探讨了脱硫机理和动力学。结果表明，DBT的脱硫应在C的直接裂解之前进行S键和脱硫反应可被视为拟一级反应。此外，通过核磁共振分析了原始离子液体和回收离子液体的结构，并研究了回收离子液体的脱硫性能。结果表明，IL在再生后仍保持其原始结构并显示出良好的可重用性。总而言之，新颖的脱硫方法是可行且有前途的。