Studies on the Nitrilation of Dibasic Acid. I

Amidation of Azelaic Acid

Abstract

Dinitrile is prepared from dibasic fatty acid and ammonia by using dehydrating catalyst at elevated temperature. Authors investigated the amidation reaction of azelaic acid by blowing ammonia gas at comparatively low temperature ranging 150 to 200°C.
As a result, order of this reaction was found to be secondary, approximately, to the concentration of the azelaic acid, where the effect of ammonia gas is minimized, and the activation energy was 9.7 5 kcal per mol and frequency factor was 40.26. The reaction velocity was expressed as :
k_c=40.26e^-3.966×10³/T at 150 to 200°C