Invention Grant
US08212028B2 Method for producing ε-caprolactam and method for producing pentasil type zeolite 失效
生产ε-己内酰胺的方法和生产pentasil型沸石的方法

Method for producing ε-caprolactam and method for producing pentasil type zeolite
Abstract:
The present invention provides a method which can produce ε-caprolactam with a good selectivity by reacting cyclohexanone oxime with a good conversion in a vapor phase Beckmann rearrangement reaction. Disclosed is a method for producing ε-caprolactam, which comprises performing a vapor phase Beckmann rearrangement reaction of cyclohexanone oxime in the presence of a pentasil type zeolite, wherein the pentasil type zeolite is a zeolite obtained by subjecting a mixture containing a silicon compound, water, and a compound represented by formula (I): [(R1)3N+—(CH2)m—N+(R1)2—(CH2)m—N+(R1)3]·3/n(A)  (I) wherein R1 represents an alkyl group having 1 to 4 carbon atoms, A represents an n-valent anion, m represents an integer of 5 to 7, and n represents an integer of 1 to 3, to a hydrothermal synthesis reaction.
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