“…5,7 Such analysis was once reported from our group for a steady-state NO (or N 2 O) þ CO reaction on Pd(110) at limited conditions. 11,15,16 This N 2 O species is very reactive on open surfaces such as Cu(110), 17 Ni(110), 18 Ni(100), 19 stepped Ni(557), 20 Rh(110), Ir(110), and Pd(110). [8][9][10][21][22] The decomposition proceeds at around 100 K or even below it.…”