fig5

From: Promoting effect of hydroxyl groups on the CO-SCR activity of Ir-Mo bimetallic catalysts under O₂ and SO₂

Promoting effect of hydroxyl groups on the CO-SCR activity of Ir-Mo bimetallic catalysts under O<sub>2</sub> and SO<sub>2</sub>

Figure 5. In situ DRIFTS results for pre-adsorbed NO, NO+O_2, or NO+O₂+SO₂ at 275 °C over (A) Ir-Mo/Z5 and (B) Ir-Mo@Z5 catalysts. Reaction conditions: [NO] = 400 ppm, [O₂] = 5%, [SO₂] = 200 ppm, and Ar balance; (C) Variation of Si-OH and Si-OH-Al peak areas with pre-adsorption on Ir-Mo/Z5 and Ir-Mo@Z5. In situ DRIFTS: In situ diffuse reflectance infrared Fourier transform spectroscopy.