摘要:In a system without catalysts,oxygen reacted with octane to produce hydroperoxides in-situ,which were used as oxidants to oxidize the sulfur compounds in the model fuel.A detailed parametric study was performed with different reac-tion temperature,reaction time,and initial oxygen partial pressure,to investigate their effects on the removal of dibenzothio-phene(DBT)and thiophene(Th).The removal of DBT could reach 98.4%, at 140,℃,after 4,h,with initial oxygen partial pressure at 0.4,MPa.The removal of thiophene can reach 81.8%, at 150,℃,after 4,h,with oxygen partial pressure at 0.8,MPa.The white crystals were characterized by FTIR and1H NMR,and identified as dibenzothiophene sulfone(DBTO2).%在无催化剂的反应体系中,氧气与烃类反应生成有机过氧化物,利用有机过氧化物将模拟汽柴油中的稠环噻吩类硫化物氧化.实验中考察了反应温度、反应时间、氧气分压对二苯并噻吩和噻吩脱除的影响.实验结果表明:反应温度140,℃、反应时间4,h、初始氧气分压0.4,MPa时,二苯并噻吩的脱除率达到98.4%,;在反应温度150,℃、反应时间4,h、初始氧气分压0.8,MPa的条件下,噻吩的脱除率能达到81.8%,.利用傅里叶变换红外光谱、核磁共振氢谱对二苯并噻吩氧化反应后产生的白色晶体进行了表征,确定其为二苯并噻吩砜.