Y-type zeolites for the catalytic oxidative degradation of organic azo dyes in wastewater


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Cobalt- and iron-containing catalysts active in the oxidation of organic dyes with hydrogen peroxide have been prepared from granular synthetic NaY and HY zeolites without a binder by ion exchange followed by heat treatment at 350–500°C. It has been demonstrated by X-ray photoelectron spectroscopy that cobalt and iron in these catalysts are in the form of Co2+ and Fe3+ ions on the support surface. The FeHY and CoNaY catalysts are most effective and stable in the oxidation of the anionic dye carmoisine in weakly acidic and alkaline media.

Sobre autores

M. Alekhina

Mendeleev University of Chemical Technology of Russia

Autor responsável pela correspondência
Email: mbalekhina@yandex.ru
Rússia, Moscow, 125047

K. Khabirova

Mendeleev University of Chemical Technology of Russia

Email: mbalekhina@yandex.ru
Rússia, Moscow, 125047

T. Kon’kova

Mendeleev University of Chemical Technology of Russia

Email: mbalekhina@yandex.ru
Rússia, Moscow, 125047

I. Prosvirin

Boreskov Institute of Catalysis, Siberian Branch; Novosibirsk State University

Email: mbalekhina@yandex.ru
Rússia, Novosibirsk, 630090; Novosibirsk, 630090

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