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This report examines the costs related to Dimethyl Terephthalate (DMT) production from p-xylene and methanol in the United States, via typical oxidation and esterification processes. In this process, operations theoretically take place in alternate oxidation and esterification (with methanol) phases. P-xylene is oxidized to p-toluic acid, which is converted to p-methyl toluate, then to methyl terephthalate and ,finally, to DMT.
It presents the economics of Dimethyl Terephthalate (DMT) production from toluene and methanol in a plant located in the United States. Toluene is converted to p-xylene via a catalytic disproportionation process similar to ExxonMobil PxMax. The p-xylene is oxidized to p-toluic acid, which is esterified with methanol to generate DMT.