Oxidation of primary amines to oximes by elemental oxygen with c

Details Oxidation of primary amines to oximes by elemental oxygen with c Oxidation of primary amines to oximes by elemental oxygen with c

1982-12-20

1985-12-24

Reamer, James H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

564253, 564268, 502 38, C07C13104, C07C13100, B01J 2392

Patent

active

045607974

ABSTRACT:
Improved processes for the conversion to oximes by selective oxidation, in the vapor phase, of saturated primary aliphatic or alicyclic amines having 2 to 12 carbon atoms especially cyclohexylamine to cyclohexanone oxime with elemental oxygen, in a reaction zone, in the presence of an effective amount of a catalyst comprising an oxygen-containing tungsten compound and alumina by (1) periodically regenerating the oxygen-containing tungsten catalyst by heating same at about 250.degree. C.-300.degree. C. in the presence of elemental oxygen, or (2) maintaining the temperature of the oxygen-containing tungsten catalyst in a range of about 100.degree. C.-145.degree. C. or (3) employing higher mol fractions of oxygen and of amine in a range of about 0.2-0.4 in the vapor phase are disclosed. An improved method of preparing an oxygen-containing tungsten on an alumina catalyst is also disclosed.

REFERENCES:
patent: 2330462 (1943-09-01), Weiland
patent: 2706204 (1955-04-01), Kahr
patent: 3022337 (1962-02-01), Enk et al.
patent: 4233139 (1980-11-01), Murrell et al.
patent: 4337358 (1982-06-01), Armor
Lowell, S., Introduction to Powder Surface Area, John Wiley & Sons, Publ., pp. 16-38, (1982).

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