Oscillations in the N2O–H2 reaction over Ir(1 1 0). Route to chaos

The study described in the present paper is focused on the N2O–H2 reaction on the Ir(1 1 0) surface and, in particular, on different kinds of oscillatory behaviour, including the route to chaos. Oscillations in rate were observed in the temperature range between 460 and 464 K, at a N2O pressure of 1 × 10−6 mbar with H2/N2O ratios close to 1. Upon minor changes in the H2/N2O ratio, a series of period doublings is observed, resulting finally in aperiodic behaviour.