Experimental Study of NO Reduction by Iron in CO Atmosphere

Ya Xin Su; A Long Su; Hao Cheng

doi:10.4028/www.scientific.net/AMR.518-523.2138

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 518-523Experimental Study of NO Reduction by Iron in CO...

Experimental Study of NO Reduction by Iron in CO Atmosphere

Abstract:

This paper presents the results of reduction of nitric oxide, NO, by metallic iron in a one-dimensional electrically heated ceramic tubular reactor in the temperature range of 300 °C to 1200 °C with simulated flue gas of 0.05% NO in N2 base. Several sizes of iron mesh rolls were used as iron samples and were placed in the centre of the reactor. The effect of CO on NO reduction was examined by introducing 0.1% CO into the flue gas. Effluent NO was measured as a function of temperature by online gas analyzer. The chemical changes of the iron samples after the reaction were analyzed by X-ray diffraction (XRD) methods. Results showed that iron mesh roll was very effective to reduce NO to N2. When the temperature was higher than 900°C, the NO reduction efficiency was observed to exceed 90% for all the mesh rolls used. Fe2O3 was formed at the surface of the iron mesh. The presence of CO increased the NO reduction efficiency by reducing the iron oxide, mainly Fe2O3, to metallic iron.

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Periodical:

Advanced Materials Research (Volumes 518-523)

Pages:

2138-2142

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.518-523.2138

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Online since:

May 2012

Authors:

Ya Xin Su, A Long Su, Hao Cheng

Keywords:

Co, Iron Mesh, Nitric Oxide, Reduction

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