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Oxidative Decomposition of 2, 4, 6-Trichlorophenol Catalyzed by Polymer Supported Metalloporphyins
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2001, v.14 no.1, pp.72-79
Park,
H., Lee,
B., &
Rhee Paeng,
I.
(2001). Oxidative Decomposition of 2, 4, 6-Trichlorophenol Catalyzed by Polymer Supported Metalloporphyins. Analytical Science and Technology, 14(1), 72-79.
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Abstract
Oxidative decomposition of 2, 4, 6-trichlorophenol(TCP) was studied in aqueous solution. Iron and manganese protoporphyrin [or tetrakis(p-carboxyphenylporphyrin)] and their polymer supported derivatives were used as catalysts, and <TEX>$KHSO_5$</TEX> and tert-butyldroperoxide(TBHP) as oxidants. Metalloporphyrin itself shows very poor catalytic activity in oxidative decomposition of TCP with oxidant. However, very high catalytic activity was observed when metalloporphyrin was chemically bound to newly synthesized polymers or XAD2 resin. Additionally, it revealed much higher catalytic activity in the presence of water-soluble polymers having a electron-donating axial ligand such as pyridine and immidazole. Maleic acid and chloromaleic acid were found in the resulting solution by ESI-MS. Especially, XAD2-supported metalloporphyrins can be reused as catalysts due to insolubility to solvent, and stability against oxidant.
- keywords
- metalloporphyrin, trichlorophenol, oxidative decomposition, polymer-supported metalloporphyrin
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