METHOD OF PRODUCING CYCLOHEXANONE Russian patent published in 2009 - IPC C07C49/403 C07C45/53 C07C45/39 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing cyclohexanone from cyclohexane, involving the following stages: oxidation of cyclohexane to hydroperoxide of cycohexyl with oxygen in the absence of a catalyst, purification of the reaction medium by washing with water, decomposition of hydroperoxide of cycohexyl to cyclohexanol and cyclohexanone in the presence of a catalyst, extraction of the cyclohexanol/cyclohexanone mixture for separating unreacted cyclohexane and separation of products with boiling point higher than that of the cyclohexanol/cyclohexanone mixture, dehydrogenating cyclohexanol contained in the cyclohexanol/cyclohexanone mixture, in the presence of a dehydrogenation catalyst, distillation of the obtained mixture so as to obtain first run (F₁) at the first stage, containing compounds with boiling point lower than that of cyclohexanone, and a last run (Q₁) and distillation of the last run (Q₁) to obtain a first run (F₂) at the second stage, formed from cyclohexanone, and a last run (Q₂).

EFFECT: obtaining highly pure cyclohexanone, suitable for use as raw material for synthesis of ε-caprolactam.

6 cl, 1 dwg, 3 ex