Preparation method of cyclohexanone-oxime

The invention provides a preparation method of cyclohexanone-oxime. In the method, in the presence of an oximation catalyst, cyclohexanone, ammonia and hydrogen peroxide are subjected to an ammoximation reaction in a solvent which is a water solution containing less amount of an inert organic solvent. The method is high in conversion rate of cyclohexanone and selectivity on cyclohexanone-oxime, is beneficial to subsequent treatment of products, and has great industrial application prospect. 本发明提供了种环己酮肟的制备方法，该方法包括在肟化催化剂的存在下，将环己酮、氨和过氧化氢在溶剂中进行氨肟化反应，其中，所述溶剂为含有少量惰性有机溶剂的水溶液。采用本发明提供的方法不仅能够得到较高的环己酮转化率和环己酮肟选择性，而且还非常有利于产物的后续处理，极具工业应用前景。