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用动态循环吸氧的方法研究了吲哚和喹啉对饱和烃氧化特征的影响 ;通过分析饱和烃氧化过程中氢过氧化物含量的变化 ,探讨了氮化合物在氧化过程中的作用本质。结果表明 ,不同氧化条件下 ,吲哚和喹啉对饱和烃氧化性能的影响有较大的差异 ,低氮含量时吲哚和喹啉均具有促进饱和烃氧化的作用 ,而高氮含量时则延长了饱和烃氧化的诱导期 ,且吲哚的作用明显强于喹啉。金属铜和环烷酸铜对饱和烃氧化的影响与氮含量有关 ,低氮含量(w N=1 0 0μg/g)时金属铜促进加有吲哚的饱和烃的氧化 ;高氮含量 (w N=4 50μg/g)时金属铜和环烷酸铜均促进饱和烃的氧化。氮化合物在饱和烃氧化的初始阶段 ,通过其氧化产物胺降低氢过氧化物含量 ,从而延长了氧化诱导期 ,而低氮含量时或氧化诱导期结束后 ,氮化合物则促进饱和烃氧化
The effects of indole and quinoline on the oxidation characteristics of saturated hydrocarbons were studied by dynamic cyclic oxygenation. The essential role of nitrogen compounds in the oxidation process was discussed by analyzing the changes of hydroperoxide content during the oxidation of saturated hydrocarbons. The results showed that under different oxidation conditions, the effects of indoles and quinoline on the oxidation performance of saturated hydrocarbons were quite different. Both indole and quinoline promoted the oxidation of saturated hydrocarbons under low nitrogen content, while the high nitrogen content Prolonged the induction period of saturated hydrocarbon oxidation, and the role of indole was significantly stronger than that of quinoline. The effects of copper and naphthenate on the oxidation of saturated hydrocarbons are related to the nitrogen content. When low nitrogen content (w N = 100μg / g), copper promoted the oxidation of saturated hydrocarbons with indole. The high nitrogen content (w N = 4 50 μg / g) both metallic copper and copper naphthenate promote the oxidation of saturated hydrocarbons. Nitrogen compounds prolong the oxidation induction period by reducing the hydroperoxide content in the initial stages of the oxidation of saturated hydrocarbons through the amine oxide of its oxidation products and promote the oxidation of saturated hydrocarbons at low nitrogen levels or after the oxidation induction period