Fig. 1
From: Unraveling the mysterious failure of Cu/SAPO-34 selective catalytic reduction catalysts
Arrhenius plots for low-temperature standard NH3-SCR. a Cu1-F/LT/HT catalysts; b Cu2-F/LT/HT catalysts. The feed gas contained 360 ppm NO, 360 ppm NH3, 14% O2, 2.5% H2O and balance N2. The total gas flow was 1000 sccm, and the gas hourly space velocity (GHSV) was estimated to be ~650,000 h−1. TOFs were calculated using EPR active Cu(II) contents in each sample
