Processes for preparing triphenylene
AssigneeAlbemarle Corporation
InventorsKevin Coppola, Christopher D. Claeboe, Bruce C. Berris
Life of this patent
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Abstract
Processes are provided for producing triphenylene by combining at least dodecahydrotriphenylene, a dehydrogenation catalyst such as palladium on carbon, and an aliphatic solvent having a boiling point greater than 180° C. to form a reaction mixture, heating the reaction mixture to at least about 180° C. but lower than the boiling point of the aliphatic solvent, maintaining the temperature of the reaction mixture at 180° C. but lower than the boiling point of the aliphatic solvent, and passing a purge fluid comprising an inert fluid through the reaction mixture, for a period of time adequate for production of triphenylene.
Claims7
A process comprising:
- (a) combining at least dodecahydrotriphenylene, a dehydrogenation catalyst, and an aliphatic solvent having a boiling point greater than 180° C. to form a reaction mixture,
- (b) heating the reaction mixture to at least about 180° C. but lower than the boiling point of the aliphatic solvent,
- (c) maintaining the reaction mixture between at least about 180° C. and the boiling point of the aliphatic solvent, and passing a purge fluid comprising an inert fluid through the reaction mixture, for at least about 12 hours,
- (d) adding a halogenated co-solvent to the reaction mixture;
- and
- (e) producing triphenylene.
A process comprising:
- (a) combining at least dodecahydrotriphenylene, palladium on carbon, and an aliphatic solvent comprising tetradecane or pentadecane and having a boiling point greater than 180° C. to form a reaction mixture,
- (b) heating the reaction mixture to at least about 180° C. but lower than the boiling point of the aliphatic solvent,
- (c) maintaining the reaction mixture between at least about 180° C. and the boiling point of the aliphatic solvent, and passing a purge fluid comprising an inert fluid through the reaction mixture, for at least about 12 hours,
- (d) adding a halogenated co-solvent to the reaction mixture;
- and
- (e) producing triphenylene.
Dependencies are inferred from the claim text.