Method for regenerating functional acidic ion liquid catalyst

一种功能化酸性离子液体催化剂再生的方法

Abstract

The invention discloses a method for regenerating a functional acidic ion liquid 1-(3-sulfo)propyl-3-methylimidazolyl p-toluenesulfonate catalyst. The method comprises the following steps: treating and acidifying an acidic molecular sieve with a sodium chloride solution and sulfuric acid, and treating the inactive functional acidic ion liquid with the acidified molecular sieve until the activity of the inactive catalyst is restored to 90% above. The regeneration cost is much lower than the synthesis cost of the new catalyst. The method has the advantages of low cost and high efficiency, and has favorable economical and environmental benefits.
本发明公开了一种功能化酸性离子液体1-(3-磺酸基)丙基-3-甲基咪唑对甲苯磺酸催化剂再生的方法。本发明采用氯化钠溶液、硫酸对酸性分子筛处理、酸化,然后利用酸化的分子筛处理已失效的功能化酸性离子液体,其失效催化剂活性恢复到90%以上,其再生的成本远远低于新催化剂的合成,本发明的方法成本低、效率高,具有良好的经济和环保效益。

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Cited By (1)

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    CN-105669639-AJune 15, 2016中国石油大学(北京)离子液体催化甲醛水溶液环化反应合成三聚甲醛的方法