发明授权
US06407230B1 Method for producing lactams using oligophosphate catalysts 失效
使用寡磷酸酯催化剂生产内酰胺的方法

Method for producing lactams using oligophosphate catalysts
摘要:
A process for preparing lactams by hydrolytic cyclization of aminonitriles in the gas phase in the presence of a metal phosphate catalyst comprises using a catalyst comprising one or more oligophosphates of the general formula (I) M (POa)b  (I) where M is a metal of group 3 or 4 of the periodic table, including the lanthanides, a is >2.5 and
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