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含能材料  2008 

酸性离子液体存在下甲苯的硝酸硝化(Ⅱ)

Keywords: 应用化学,酸性离子液体,催化,硝化,甲苯,硝酸(67%)

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Abstract:

为了实现一种环境友好的绿色硝化途径,以1-甲基3-丁磺酸咪唑型离子液体[SO3H(CH2)4mim]X(X-=pTSO-,CF3COO-,BF4-)为溶剂和催化剂,进行了甲苯的硝酸(67%)硝化反应研究。结果表明,[SO3H(CH2)4mim]CF3COO表现出了最好的催化效果,当甲苯与硝酸的摩尔比为1:1,离子液体的用量为底物的5%(摩尔分数),80℃反应22h,可使甲苯的转化率达到65.1%,一硝基甲苯的收率为40.7%,邻/对为1.24。

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