Investigations of the reduction of NO to N2 by reaction with Fe

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

“…In this paper, some aspects of the practical application of iron (as Armco iron or steel) for NO x removal are presented. This work complements and continues our previous study [13]. In particular, the influence of excess air on the de-NO x efficiency in the reaction with Fe during CO combustion is determined.…”

“…The experimental setup was similar to that described in our previous work [13]. Investigations were performed in an externally heated cylindrical ceramic reactor with an inside diameter of 18 mm and with a heating zone 380 mm in length.…”

“…The experimental course was similar to earlier research [13]. At the beginning of each experiment, the samples were placed into a cold reactor, and the system was subsequently heated to the proper temperature.…”

“…A survey of the literature [12][13][14] suggests that relatively few studies on the reduction of NO x in the presence of iron (or its oxides) have been reported. NO is assumed to be oxidized by metallic iron via the reaction:…”

“…Additionally, the kinetic coefficients of the chemical reaction between NO and Fe have been determined as a function of temperature [9,13,15,17,19,23]. Recently, Fennell et al [12] reported a study of the latter stages of reaction (1), when the process has been controlled by the diffusion of iron ions through an oxide layer around the iron particle.…”