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. 2022 Jun 28;13(26):6164–6170. doi: 10.1021/acs.jpclett.2c01107

Figure 2.

Figure 2

(a) NOx conversion in the 150–500 °C temperature range for 0.1_5, 0.5_15, and 0.6_29. Amount of catalyst: 5 mg; feed gas: 500 ppm of NO, 533 ppm of NH3, 5% H2O, 10% O2 in N2; flow: 225 N mL/min. The bottom inset correlates residual CuI fractions evaluated by XANES LCF and turnover frequency (TOF) in mol/[molCu s] at 200 °C for the three catalysts. (b) Correlation between the same residual CuI fractions and the volumetric Cu density in Cu-CHA catalysts, comparing experimental values obtained in this work (colored full circles) and literature values by Paolucci et al.6 (empty gray squares).