Catalytic oxidation of cycloparaffins

Details Catalytic oxidation of cycloparaffins Catalytic oxidation of cycloparaffins

B - Operations, Transporting

01

J

260/582, 252/52.

B01J 23/70 (2006.01)

Patent

CA 1128032

ABSTRACT OF THE DISCLOSURE A process is disclosed for the catalytic oxidation of a cycloparaffin e.g. cyclohexane, to partial oxidation products thereof, especially for the production of mixtures of cycloalkanols and cycloalkanones. In the process molecu- lar oxygen, usually in the presence of a an inert gas, is introduced into the cycloparaffin at elevated pressure and a temperature of 130-180°C, in the presence of an oxidation catalyst comprising a heavy metal compound along with an N- heterocyclic compound. The heavy metal of the heavy metal compound may be cobalt, vanadium, manganese, copper, iron or nickel. The heavy metal compound may have ligands of alkano- ate, dialkylphosphate, dicycloalkylphosphate or alkylcyclo- alkylphosphate. The N-heterocyclic compound may be dipyridyl, pyrimidine, pyrazine, pyridine and pyridine substituted with -CN,-R, and/or -OR where R is alkyl. A preferred catalyst is cobalt bis [di(2-ethylhexyl)phospate] in combination with pyridine.

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