Method for producing adipic acid and dibasic acid by using nitric acid to oxidizing cyclohexane bionic oxidation mixture

The invention relates to a method for directly preparing adipic acid and diacid from cyclohexane bionic oxidation mixture by nitric acid oxidation. The invention is characterized in that in the presence of 1-10mg/L metalloporphyrin catalyst, at 140-160DEG C and 0.8-1.2MPa, cyclohexane is oxidized by air, and the cyclohexane oxidation mixture is directly prepared into adipic acid and diacid by nitric acid oxidation. Compared with prior adipic acid preparation, the invention can simultaneously improve single-pass conversion of cyclohexane and total yield of diacid respectively more than 10% and80%. At the same level of adipic acid yield, the circulation quantity of cyclohexane is reduced more than 50%, nitric acid consumption is reduced about 10%, the method reduces the load on cyclohexanedistillation system, energy consumption, and production cost. The invention can be directly used in the existing industrial unit that prepares adipic acid from cyclohexane with reduced production cost and improved yield. The i