The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 27, 1982
Filed:
Jan. 30, 1981
Ronald A Zelonka, Whitby, CA;
Du Pont Canada Inc., Mississauga, CA;
Abstract
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, molecular oxygen, usually in the presence of an inert gas, is introduced into the cycloparaffin at elevated pressure and a temperature of 130.degree.-180.degree. 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 alkanoate, dialkylphosphate, dicycloalkylphosphate or alkylcycloalkylphosphate. 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)phosphate] in combination with pyridine.