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Issue 11, 2014
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Simultaneous removal of NOX and SO2 with H2O2 over Fe based catalysts at low temperature

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Abstract

Simultaneous flue gas desulfurization and denitrification are achieved with ˙OH radicals generated from H2O2 catalyzed by Fe based transition metal (Fe, Fe–Al, Fe–Ti, Fe–Si) oxides in the duct, followed by purification with ammonia-based glass made washing tower. The main recovered products are the ammonia nitrate and sulfate, which are important fertilizers. In this oxidation-removal process, 100% SO2 and 74% NOX removal efficiencies are achieved at the simulated flue gas temperature of 120–180 °C under the applied conditions with a space velocity of 36 000 h−1. The experimental results show that the enhancement of Lewis acid benefits the generation of O2 without ˙OH radical production. The increase of Fe3+ bonded with hydroxyl group and points of zero charge value are beneficial to produce ˙OH radicals, thus improving the NOX removal efficiency.

Graphical abstract: Simultaneous removal of NOX and SO2 with H2O2 over Fe based catalysts at low temperature

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Publication details

The article was received on 05 Nov 2013, accepted on 09 Dec 2013 and first published on 10 Dec 2013


Article type: Communication
DOI: 10.1039/C3RA46418K
RSC Adv., 2014,4, 5394-5398

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    Simultaneous removal of NOX and SO2 with H2O2 over Fe based catalysts at low temperature

    J. Ding, Q. Zhong and S. Zhang, RSC Adv., 2014, 4, 5394
    DOI: 10.1039/C3RA46418K

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