Abstract
A remarkable breakthrough, which offered an advanced purified terephthalic acid (PTA) process, was developed. The catalytic activity and selectivity toward terephthalic acid was significantly enhanced by injecting CO2 in the feed stream for the liquid phase O2 oxidation over the conventional MC-type catalyst. The liquid phase O2 oxidation of p-xylene and m-xylene proceeded at a much faster rate under milder conditions to produce terephthalic acid and isophthalic acid, respectively, in the co-presence of CO2 over the MC-type catalyst. The striking function of CO2 for the O2 oxidation of p-xylene in the MC-type catalyst was summarized.
Original language | English |
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Pages (from-to) | 389-390 |
Number of pages | 2 |
Journal | ACS Division of Petroleum Chemistry, Inc. Preprints |
Volume | 46 |
Issue number | 4 |
State | Published - Aug 2001 |
Event | ACS 222nd National Meeting - Chicago, IL, United States Duration: 26 Aug 2001 → 30 Aug 2001 |