Local independent oscillation centres present on an iridium field emitter during the NO–H2 reaction

Surface science studies of selective catalytic reduction of NO: Progress in the last ten years

“…However, due to its relatively simpler reaction pathway (in the authors' opinion), in the past decade, surface science studies of this reaction have not been so actively pursued as those of the NO-CO and NO-NH 3 reactions, and the studies which have been carried out mainly focus on its dynamical behavior, i.e., the well-known oscillation phenomena . Nieuwenhuys's group has taken a leading role in this field, having a series of publications related to their studies on various surfaces, including Pt, Rh, Pd, Ir and Ru [107][108][109][110][111][112][113][114][115][116][117][118][119][120]. No oscillations in rate have been observed over Pd(1 1 1) and Ru(0 0 0 1).…”

Nonlinear Behavior in the NO−H2Reaction over Ir(110) Studied by Fast X-ray Photoelectron Spectroscopy

“…Oscillations in the NO−H 2 reaction have been observed over Pt(100), − stepped rhodium surfaces consisting of (111) terraces, − Rh(110), , and more recently over Ir(110) and iridium surfaces consisting of (100) terraces and (110) steps. − Interestingly, these metals show very different behavior. Over Pt(100), the formations of N 2 and NH 3 oscillate in phase with one another, whereas over the Rh(111) surfaces, Ir(110), and Ir(210), there is an anti phase relationship between the formation of NH 3 and N 2 .…”