Rapid Reduction of Nitric Oxide by Hydrogen in the Presence of Stainless and Ni Catalyst

Sadakata, Masayoshi; Komiyama, Shinji; Sakai, Takeshi

doi:10.1080/00102208508960303

Cited by 3 publications

(1 citation statement)

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“…Notably, iron or its compounds (alloys, oxides) can be used for the de-NO x process in two types of methods: primary and secondary methods. The application of iron (or/and its alloys/oxides) as a catalyst (secondary measures) in a separate reactor (similar to the concept of selective catalytic reduction, SCR) has been previously proposed [40][41][42][43][44]. For example, Randall et al investigated the reduction of NO and N 2 O by CO over silica-supported iron oxide (Fe 2 O 3 or Fe 3 O 4 ) catalysts.…”

Section: Application Of Iron In the De-nox Process: A Brief Analysismentioning

confidence: 99%

Investigations of the reduction of NO to N2 by reaction with Fe under fuel-rich and oxidative atmosphere

Lasek

2014

Heat Mass Transfer

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The limitation of nitrogen oxides (NO x ) emissions from stationary combustion chambers is still an important issue in the field of the natural environment protection. This paper describes the reduction of NO x in the presence of iron. A few new aspects of research describing the utilization of iron as an additive that influences NO x reduction at high temperatures are presented. In particular, the influence of the excess air number (k) on the NO x removal efficiency in the presence of Armco iron was determined. A [50 % increase in the efficiency was achieved at k = 0.6. The research was conducted using N 2 / NO mixed with a flue gas from carbon monoxide combustion. In addition, a correction factor (Arrhenius-type empirical equation) was determined, which enabled the calculation of the oxygen influence on the inhibition of the de-NO x reaction in the presence of iron. The NO x reduction was also tested using bearing steel samples. Finally, the use of iron in de-NO x processes under different combustion conditions is briefly reviewed and analyzed.

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