PROCESSES FOR PRODUCING AROMATIC DICARBOXYLIC ACIDS

PROCESSES FOR PRODUCING AROMATIC DICARBOXYLIC ACIDS

Processes for producing aromatic dicarboxylic acids are disclosed, the processes including a step of combining in a reaction medium a dialkyl aromatic, a solvent comprising water and a saturated organic acid having from 2-4 carbon atoms, and an oxygen-containing gas, at a temperature from about 125°...

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Bibliographische Detailangaben
Hauptverfasser: ROBERT THOMAS HEMBRE, GINO GEORGES LAVOIE, THOMAS RICHARD FLOYD, DANIEL BURTS COMPTON, CHARLES EDWAN SUMNER, JR, BRENT ALAN TENNANT, DAVID LANGE, BRYAN WAYNE DAVENPORT, JOSEPH NATHANIEL BAYS
Format: Patent
Sprache:eng ; por
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:Processes for producing aromatic dicarboxylic acids are disclosed, the processes including a step of combining in a reaction medium a dialkyl aromatic, a solvent comprising water and a saturated organic acid having from 2-4 carbon atoms, and an oxygen-containing gas, at a temperature from about 125° C. to about 155° C., in the presence of a catalyst composition comprising cobalt, manganese, zirconium, and bromine, wherein the weight ratio of cobalt to manganese in the reaction mixture is from about 10 to about 400. The processes provide improved conversion, while reducing the formation of carbon oxides and other by-products.