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Textile Research Journal
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Peroxide Decoloration of Azo Dye Catalyzed by Manganese Porphyrin Derivatives in Non-aqueous Solvent

Junko Nakamura

Department of Human environments, Faculty of Human Sciences, Osaka University of Human Sciences, Shojaku, Settu, Osaka 566-8501, Japan, j-nakamura{at}kun.ohs.ac.jp

Ritsuko Oura

Department of Human environments, Faculty of Human Sciences, Osaka University of Human Sciences, Shojaku, Settu, Osaka 566-8501, Japan

Mamoru Nango

Tsukuri College, Department of Applied Chemistry, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan

The effect of manganese protoporphyrin, manganese halogenated porphyrins, polyethylene glycol (PEG)-linked manganese porphyrin and PEG-linked manganese halogenated porphyrins (Scheme 1), on the decoloration rates of C.I. Solvent Yellow 14 by m-chloroperbenzoic acid (mCPBA) at 25°C in non-aqueous solvent was examined. The decoloration rate of C.I. Solvent Yellow 14 by mCPBA was accelerated due to the presence of manganese porphyrin derivatives, depending on the structures of porphyrin derivatives. Interestingly, the decoloration rate decreased due to the presence of ligands such as imidazole, in comparison to the rate catalyzed by the manganese porphyrins in aqueous solution.

Key Words: manganese porphyrin derivatives • m-chloroperbenzoic acid (mCPBA) • decoloration rate • non-aqueous solvent • ligand

Textile Research Journal, Vol. 78, No. 12, 1080-1086 (2008)
DOI: 10.1177/0040517507087682
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