fig7
Figure 7. Relative crystallinity (A) and NH3-SCR curves (B) of hydrothermally-aged zeolite catalysts; (C) Apparent activation energies at low temperatures for aged zeolite catalysts; (D) TORs of different zeolite catalysts at 150 °C; (E) Different Cu species content of aged zeolite catalysts. Z2Cu2+ (■), [ZCu(OH)]+ (●), total Cu sites (▼), CuOx (▲); (F) ΔG for [ZCu(OH)]+ hydrolysis to Cu(OH)2 with and without Na+. This figure is quoted with permission from Elsevier[101]. NH3-SCR: Ammonia-assisted selective catalytic reduction; TORs: turnover rates.
