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Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

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Co-oxidation of p-xylene and p-toluic acid to terephthalic acid in water solvent: Kinetics and additive effects

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Title
Co-oxidation of p-xylene and p-toluic acid to terephthalic acid in water solvent: Kinetics and additive effects
Other Titles
Co-oxidation of p-xylene and p-toluic acid to terephthalic acid in water solvent: Kinetics and additive effects
Author
Kwak, Jin WonLee, Jae SungLee, Kyung Hee
Keywords
Terephthalic acid; Co-oxidation; Water solvent; Manganese acetate; CO(2) effect
Issue Date
2009-04
Publisher
ELSEVIER SCIENCE BV
Citation
APPLIED CATALYSIS A-GENERAL, v.358, no.1, pp.54 - 58
Abstract
Co-oxidation of p-xylene (PX) and p-toluic acid (p-TA) to terephthalic acid (TA) in water with Mn acetate catalyst has been studied. Mn acetate showed better catalytic activity than Co acetate and no synergism was observed between two catalysts. During the reaction. PX was transformed to p-TA while p-TA was converted to TA by a radical reaction. In the co-oxidation, radicals generated from facile PX-to-p-TA conversion would assist more difficult p-TA to TA conversion. Addition of CO(2) in the oxygen promoted the TA formation and suppressed the CO(2) formation from the combustion of reactants. Additional transition metals such as Ni and Ti also promoted the catalytic activity of Mn catalyst. Furthermore, a synergism was observed between added CO(2) and the added transition metal. Finally, the yield of terephthalic acid reached about 95% with Mn + (Ti, Ni or Cr) catalyst system and CO(2) addition. (C) 2009 Elsevier B.V. All rights reserved
URI
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DOI
10.1016/j.apcata.2009.01.037
ISSN
0926-860X
Appears in Collections:
ECHE_Journal Papers
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