The present invention is a method of producing ε-caprolactam through adipamide as an intermediate, and characteristically includes a lactamization step of reacting adipamide, formed from a material compound, with hydrogen and ammonia in the presence of a catalyst containing: a metal oxide mainly containing an oxide(s) of one or more metallic elements selected from the group consisting of metallic elements of group 5 and groups 7 to 14 in the 4th to 6th periods of the periodic table; and a metal and/or a metal compound having a hydrogenation ability. The method can increase the selectivity of ε-caprolactam.
本发明是一种通过己内酰胺作为中间体生产ε-己内酰胺的方法,其特征在于包括一种内酰胺化步骤,即在催化剂的存在下,将由材料化合物形成的己内酰胺与
氢气和
氨气反应,所述催化剂包含:主要含有来自周期表第4至第6周期的5族和7至14族
金属元素氧化物的金属氧化物;以及具有氢化能力的
金属和/或
金属化合物。该方法可以提高ε-己内酰胺的选择性。