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环己烷氧化制备环己酮和环己醇是一个重要的工业过程,但目前满足绿色环保和便于工业化应用的催化剂或反应工艺很少,N-羟基邻苯二甲酰亚胺(NHPI)催化剂因其能在温和条件下有效地催化烃类自由基氧化而受到广泛关注.本文综述了近年来NHPI复合催化体系催化氧化环己烷的实验路线.分析表明NHPI复合催化剂能明显地提高环己烷的转化率和环己酮的选择性,但普遍存在反应时间长,热稳定性差,可回收率低等缺点.因而开发更高效的NHPI复合催化剂,对环己烷氧化工艺及其工业化应用具有重要的现实意义.
Cyclohexane oxidation of cyclohexanone and cyclohexanol is an important industrial process, but at present to meet the green and easy to industrial applications of the catalyst or reaction process is very small, N-hydroxy phthalimide (NHPI) catalyst Because of its ability to effectively catalyze the oxidation of hydrocarbon radicals under mild conditions, it has received widespread attention.In this paper, the experimental route of cyclohexene oxidation catalyzed by NHPI composite catalysts is reviewed in this paper. The results show that the NHPI catalyst can significantly increase the yield of cyclohexane Conversion and cyclohexanone selectivity, but the general existence of long reaction time, poor thermal stability, low recovery rate, etc. Therefore, the development of more efficient NHPI composite catalyst for the cyclohexane oxidation process and its industrial application is important The practical significance.