METHOD OF DEHYDRATION OF CYCLOHEXANOL INTO CYCLOHEXANONE Russian patent published in 2014 - IPC C07C49/403 B01J23/02 B01J23/06 B01J27/232 C07C45/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of dehydration of cyclohexanol into cyclohexanone. The claimed method of dehydration of cyclohexanol into cyclohexanone is realised in a gas phase at an increased temperature in the presence of a catalyst, which contains active components, consisting for 56÷88 wt % of zinc oxide and for 8.0÷39.0 wt % of calcium carbonate. The applied catalyst is used in the form of a catalytic system with alternation in the gas course of three layers of different height, filled with different ratio of the catalyst and ceramics. The first, protective-distributing, layer consists of ceramics 10÷20 cm high. The second layer of the main reaction ignition zone consists of the catalyst and ceramics in a ratio of 1:1 with the layer as high as a diameter of a flue duct of smoke gases. The third layer of the main reaction zone consists of the catalyst and ceramics in a ratio of 3:1 with the layer height, equal to the height of the apparatus before the first input of the flue duct.

EFFECT: claimed method makes it possible to avoid an undesirable course of side reactions, prevent the catalyst coking and increase its service term.

3 cl, 1 tbl, 5 ex