离子液体改进汽油安定性的初步研究

讨论了影响汽油安定性的因素和改进汽油安定性的重要性，介绍了离子液体的制备方法及特性，并提出了用离子液体催化剂改进汽油安定性的新途径。研究表明，最佳反应条件为：离子液体用量3％，反应时间15min，反应温度50℃，催化剂载体选择氧化铝。各离子液体使汽油中烯烃降低9．9％～10．5％，硫含量由39mg／kg降至10mg／kg，碱性氮由24mg／kg降至1mg／kg以下，且降烯烃效果明显；离子液体在汽油降烯烃反应中显现出其优点：反应条件温和，操作简单，反应时间短，产品的分离和催化剂的重复利用相对容易。

Study on Improving Invariability of Gasoline by ILs Catalyst

The factors influencing on invariability of gasoline and the importance of improving it were described in this paper, preparation method and the characteristic of ILs were in troduced, too. A novel way to improve invariability of gasoline by ILs catalyst was put forward, which was mainly by determining the content of olefin, basic nitrogen and sulphur of gasoline based on which the optimal conditions for experiments were got. The ILs catalyst, as a green catalyst friendly to environment, can displace many other alkylation catalysts, decrease the olefin content of gasoline, and show their notable advantages: mild conditions, simple operation, short reaction time, easy recycling of the ILs catalyst and the separation of the products and the catalyst.