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Co-oxidation reaction of hydrogen peroxide with phenol, 4-aminoantipyrine catalysed by metal tetrasulfophthalocyanines (MPcTs) has been studied by UV–vis spectroscopy in the presence and absence of microheterogeneous media. The rate of antipyrilquinoneimine dye formation depends on the nature of metal ion, pH, and microheterogeneous medium. Hence, the activation of hydrogen peroxide is in the following...
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