PRODUCTION OF ALIPHATIC NITRILE

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a high-purity aliphatic nitrile in a high yield without dissolution of a catalyst in a product in a reaction between an aliphatic carboxylic acid lower alkyl ester and ammonia by using the solid catalyst having high reactivity of <=300 deg.C reaction temperature and slightly soluble in a reaction solution. SOLUTION: An aliphatic carboxylic acid lower alkyl ester is reacted with ammonia in the presence of niobium oxide treated with an acid. In this case, niobium oxide treated with 0.1-50 mol/L aqueous solution of an acid is used. The acid is hydrochloric acid or boric acid. The aliphatic carboxylic acid lower alkyl ester is a 6-22C aliphatic carboxylic acid methyl ester.