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Abstract

Nylon 6 or polycaprolactam is one of the most widely used polymers, obtained from the polymerization of caprolactam monomer resulting from the innovation of cyclohexanone oxime. Cyclohexanone oxime is obtained from the reaction of hydroxylamine and cyclohexanone oxime. This reaction depends on the parameters such as temperature, amount of raw materials, catalyst, and reaction time, which affect the reaction yield. The reaction of ammonia and cyclohexane in the presence of an aluminum silicate catalyst was used. After the progress of the reaction, we added an oxidizing agent, such as hydrogen peroxide, to the reaction medium to oxidize the ammonia present in the reaction medium and to advance the reaction of cyclohexanone towards the progress of the oxime formation reaction.  The present study aims to investigate the factors affecting the catalytic production of cyclohexanone oxime to increase its production yield. Also, it investigates this reaction using different catalysts, including aluminum silicate and titanium oxide catalysts under different reaction conditions to produce cyclohexanone oxime. The obtained results showed the cyclohexanone oxime production with a yield of 90.54% in the conditions of 0.294 mol of ammonia, 0.176 mol of hydrogen peroxide, 0.178 mol of cyclohexanone, at a temperature of 72 to 75 °C and 1% catalyst. Also, the aluminum silicate catalyst showed the best yield in cyclohexanone oxime production‎.