氮化合物对饱和烃氧化性能的影响

采用液相氧化法和循环动态吸氧法研究了喹啉及吲哚对饱和烃氧化性能的影响。循环动态吸氧实验结果表明 ,低氮浓度的氮化合物能促进饱和烃的氧化 ,高氮浓度的氮化合物能提高饱和烃氧化的诱导期。但在诱导期的前后阶段内 ,氮化合物对饱和烃氧化的影响程度不一致。液相氧化实验结果表明 ,催化剂的形态也是影响饱和烃氧化的重要因素 ,吲哚与金属铜具有协同促进饱和烃氧化的作用 ,而吲哚与环烷酸铜则有很好的抑制饱和烃氧化的效果。当有硫化合物共存且硫氮原子比不同时 ,喹啉和甲基苄基硫醚分别是影响饱和烃氧化最显著的因素。所以氮化合物对饱和烃氧化的作用受氮化合物浓度、氧化反应时间、催化剂的形态及硫、氮之间的相互作用等复杂因素的影响

EFFECTS OF NITROGEN COMPOUNDS ON SATURATES OXIDATION

The dynamic oxygen uptake and liquid oxidation methods are used to study the influences of nitrogen compounds, quinoline and indole, on oxidation characteristics of saturate hydrocarbon. The experimental results of dynamic oxygen uptake indicate that nitrogen compounds with low nitrogen content can accelerate oxidation of saturated hydrocarbon, and that with high content nitrogen devote to lengthen the induction period time of oxidation. The effect of nitrogen compounds on oxidation of saturated hydrocarbon may be different before and after the induction period time of oxidation. The results of liquid oxidation indicate that catalyst form is also a distinct factor influencing oxidation of saturated hydrocarbon. Indole coexisting with copper has a co accelerating effect on oxidation of saturated hydrocarbon, and has a good inhibiting oxidation effect while coexisting with copper naphtnenate. Quinoline or benzyl methyl sulfide coexisting with sulfur compound is the distinct constituent factor influencing oxidation of saturated hydrocarbon with different atom ratios of sulfur to nitrogen. So the action of nitrogen compound on oxidation of saturated hydrocarbon is controlled by nitrogen compound content, oxidation reaction time, catalyst form and the reciprocity of nitrogen and sulfur compound.