fig4

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 4. (A) NO-TPD profiles, (B) N2O-TPD profiles, (C) CO-TPD profiles, and (D) CO-TPR profiles of Ir-Mo@Z5, Ir-Mo/Z5 catalysts and Z5 support. TPD: Temperature-programmed desorption; TPR: temperature-programmed reduction‌.