期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 138, 期 1, 页码 152-159出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2006.05.052
关键词
heterogeneous catalysis; Mn(III); flexible ligand method; zeolite; dye removal
Catalytic wet hydrogen peroxide oxidation of acid dye has been explored in this study. Manganese(III) complex of N,N'-ethylene bis(salicylidene-aminato) (salenH(2)) has been encapsulated in super cages of zeolite-Y by flexible ligand method. The catalyst has been characterized by FT-IR, XRD, TG/DTA and nitrogen adsorption studies. The effects of various parameters such as pH, catalyst and hydrogen peroxide concentration on the oxidation of dye were studied. The results indicate that after 20 min at 30 degrees C, 0.175 M H2O2 and 3 g/L catalyst, about 90% dye removal was obtained. These studies indicate that manganese-salen complex immobilized on zeolite framework can act as a good heterogeneous catalyst for removal of dye from wastewaters. (c) 2006 Elsevier B.V. All rights reserved.
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