室温离子液体催化正戊烷异构化反应

采用无水三氯化铝与多种有机氯盐按照不同摩尔比合成了具有不同酸度和阴、阳离子结构的室温离子液体，考察了离子液体的结构和反应条件对正戊烷异构化反应的影响。结果表明，合成离子液体过程中，AlCl3与Et3NHCl摩尔比对离子液体的酸强度和催化性能有较大的影响。实验确定了正丁醇为异构化反应适宜的引发剂，其用量为正戊烷的2.5%；正戊烷异构化的优化反应条件为反应温度30℃，反应10h，搅拌器转速1500r/min。在此优化反应条件下，正戊烷的转化率与异构化率分别达到85.66%和92.86%。

Isomerization of n-pentane catalysed by room temperature ionic liquids

Room temperature ionic liquids (RTILs) with various anions and cations were synthesized. The effects of the structure of RTILs and reaction conditions on the isomerization of n pentane were investigated. The mole ratio of AlCl3 to Et3NHCl plays an important role in the acidity and the catalysis of the RTILs. Normal butyl alcohol was selected as the initiator of the isomerization of n pentane and its dosage is about 2.5 weight percent of the n pentane. The optimal reaction temperature, reaction time and stir speed are 30℃, 10h and 1500r/min, respectively. Under these conditions, the conversion and the isomerization ratio are 85.66% and 92.86%, respectively.