公开(公告)号：US20160060202A1

公开(公告)日：2016-03-03

申请号：US14934208

申请日：2015-11-06

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： DAVID MILTON LANGE ,  ASHFAQ SHAHANAWAZ SHAIKH ,  PATRICE L. RIESENBERG ,  MESFIN EJERSSA JANKA

IPC: C07C51/265

CPC classification number: C07C51/265 ,  C07C63/26

Abstract: Processes for producing terephthalic acid are disclosed, the processes including a step of combining in a reaction medium para-xylene, a solvent comprising water and a saturated organic acid having from 2-4 carbon atoms, and an oxygen-containing gas, at a temperature for example from about 145° C. to about 175° C., in the presence of a catalyst composition comprising cobalt, manganese, zirconium, and bromine, wherein the zirconium is present in the reaction medium in an amount, for example, from 1 ppm to 50 ppm with respect to the weight of the liquid in the reaction medium.