【摘要】 合成了新型离子液体(ILs)1-烷基-3-羧甲基苯并三氮唑双三氟甲磺酰亚胺盐,并对其进行了表征.将其与双氧水组成催化氧化体系,考察了脱除模型油品中硫化物的效果.结果表明,以离子液体1-5基-3-羧甲基苯并三氮唑双三氟甲磺酰亚胺盐[C2O2BBTA][NTf2]为萃取/催化剂,设定n(H2O2)∶n(S)=2.5∶1,m(模型油)∶m(离子液体)=5∶1,在75℃下反应1 h后,模型油中二苯并噻吩(DBT)、苯并噻吩(BT)和4,6-二甲基二苯并噻吩(4,6-DMDBT)的脱硫率分别为98.3%,98.3%和96.6%.所合成离子液体重复使用10次,脱硫率无明显变化.该方法操作简单、反应条件温和,可以实现深度脱硫.更多还原

【Abstract】 A new class of ionic liquids( ILs) 1-alkyl-3-carboxymethyl double trifluoromethanesulfonimide was synthesized and characterized. Ionic liquids and hydrogen peroxide were tested in extraction-oxidative desulfurization system,and the sulphur removal efficiency of S-compounds in the model oil was investigated. The results showed that the 1-butyl-3-carboxymethyl double trifluoromethanesulfonimide salt( [C2O2BBTA][NTf2])was both extractant and catalyst,n( H2O2) ∶ n( S) = 2. 5 ∶ 1,m( Model oil) ∶ m( Ionic liquid) = 5 ∶ 1,at 75 ℃for 1 h. The ratios of desulfurization to the model oil of dibenzothiophene( DBT),benzothiophene( BT) and4,6-dimethyldibenzothiophene( 4,6-DMDBT) reached 98. 3%,98. 3% and 96. 6%. Ionic liquid can be recycled for 10 times with an unnoticeable decrease in desulfurization activity. The method can realize deep desulfurization the depth have the advantages of both simple operation and mild reaction condition.更多还原