新型飞机燃油抗氧剂膦化物的氧化反应的研究

Study of phosphine autoxidation as potential effective antioxidant for future high performance jet fuel

膦化物为高性能飞机燃油潜在的抗氧剂,能显著地改善飞机燃油的高温稳定性能。实验结果表明,膦化物在燃油介质中的氧化反应有两种反应类型同时进行,即:自由基链反应及膦化物与氧气的直接作用。在相对较低温度时,膦化物与基态氧发生自由基链反应,膦化物很快被氧化为氧化膦;在相对较高的温度,膦化物与激发态氧直接作用,通过三元环状中间体而最终生成氧化膦和次磷酸酯。

Preliminary study indicates that phosphines are potential effective antioxidant for future high performance jet fuel. The experimental results indicate that the autoxidation of phosphine has two types of reaction operating at the same time：a free radical chain reaction and the direct reaction between phosphine and oxygen. The phosphine was quickly oxidized by triplet oxygen to phosphineoxide with a free radical chain reaction at relatively low temperature; while at high temperature, the phosphine react with singlet oxygen through a three member ring intermediate to form phosphineoxide and phosphinate as the product.