[Amim]Cl/ZnCl_2离子液体脱除燃料油中碱性氮化物

Removal of basic nitrogen compounds from fuel oil with [Amim]Cl/ZnCl_2 ionic liquid

合成了金属基离子液体[Amim]Cl/Zn Cl2,采用红外光谱对其结构和酸性进行表征,并以碱性氮含量高达0.52%(质量分数)的抚顺页岩油柴油馏分为原料考察其脱氮性能。结果表明,在反应温度30℃、剂油质量比1∶7、反应时间20 min、静置时间2 h的条件下,[Amim]Cl/Zn Cl2对柴油馏分中碱性氮化物的脱除率可达83.78%,且该离子液体经回收重复使用四次后,碱氮脱除率仍能达到52%。

Metal-based ionic liquid [Amim]Cl/ZnCl2 was synthesized and its structure and acidity were characterized with FT-IR spectroscopy. The denitrogenation performance of the ionic liquid was investigated using Fushun shale diesel oil containing 0.52% basic nitrogen as feedstock. Experimental results showed that the ionic liquid exhibited good denitrogenation performance and 83.78% basic N-extraction efficiency was achieved under the optimized operation conditions, i.e., temperature of 30℃, 1：7 （mass ratio） IL：oil, reaction time of 20 min and settling time of 2 h. In addition, the basic N-removal efficiency of the ionic liquid can still remain 52% after four recycles.