离子液体1-烷基-3-羧甲基苯并咪唑双三氟甲磺酰亚胺盐的合成及在油品中的脱硫应用
发布时间：2018-11-28 15:46
【摘要】：合成并表征了一类新型离子液体1-烷基-3-羧甲基苯并咪唑双三氟甲磺酰亚胺盐,将其与双氧水组合用于脱除模型油中的硫化物.结果表明,当模型油与萃取/催化剂1-辛基-3-羧甲基苯并咪唑双三氟甲磺酰亚胺盐([C_2O_2OBIM][Tf2N])的质量比为5∶1,H_2O_2/S摩尔比为5∶1,于75℃反应1 h后,模型油中二苯并噻吩(DBT)脱硫率为98.8%;脱硫过程符合一级动力学方程,5种硫化物的脱硫速率大小顺序为二苯并噻吩(DBT)4,6-二甲基二苯并噻吩(4,6-DMDBT)苯并噻吩(BT)2,5-二甲基噻吩(2,5-DMT)噻吩(T),其中脱除DBT和BT的反应表观活化能分别为44.16和52.10 k J/mol.该离子液体循环再生使用14次,脱硫率无明显下降.该深度脱硫方法具有操作简便及条件温和的特点.
[Abstract]:A new ionic liquid, 1-alkyl-3-carboxymethyl benzimidazole-bisfluoromethyl sulfonimide, was synthesized and characterized. It was combined with hydrogen peroxide to remove sulfides from model oil. The results showed that when the mass ratio of the model oil to the extraction / catalyst 1-octyl-3-carboxymethyl benzimidazole bis trifluoromethyl sulfonimide ([C_2O_2OBIM] [Tf2N]) was 5: 1, the molar ratio of the model oil to the extraction / catalyst 1-octyl-3-carboxymethyl benzimidazole-bisfluoromethyl sulfonimide ([C_2O_2OBIM] [Tf2N]) was 5: 1. After 1 hour reaction at 75 鈩，
本文编号：2363346
[Abstract]:A new ionic liquid, 1-alkyl-3-carboxymethyl benzimidazole-bisfluoromethyl sulfonimide, was synthesized and characterized. It was combined with hydrogen peroxide to remove sulfides from model oil. The results showed that when the mass ratio of the model oil to the extraction / catalyst 1-octyl-3-carboxymethyl benzimidazole bis trifluoromethyl sulfonimide ([C_2O_2OBIM] [Tf2N]) was 5: 1, the molar ratio of the model oil to the extraction / catalyst 1-octyl-3-carboxymethyl benzimidazole-bisfluoromethyl sulfonimide ([C_2O_2OBIM] [Tf2N]) was 5: 1. After 1 hour reaction at 75 鈩，
本文编号：2363346
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