15% H2 or 1% CO in N2 balance at 500 – 900 ℃ Fig. S1. The scheme of reduction treatment, pretreatment (oxidative), and NO adsorption/desorption process. 2 hr 900 ℃ NO on 30min 30min 500 ℃ NOx desorption Preconditioning Reduction NO adsorption (100s) 120 ℃ (10℃/min) (10℃/min) (10℃/min) Time RT 15% H2 or 1% CO in N2 balance at 500 – 900 ℃ 9.5% O2, 5% H2O, 5% CO2 in N2 balance 9.5% O2, 5% H2O, 5% CO2 , 100 ppm NO in N2 balance

Fig. S2. Magnified XRD patterns from 32 ° to 41 ° of Pd/SSZ-13 catalyst with various reduction temperature.

Fig. S3. Fourier transforms of k3-weighted Pd K edge EXAFS for Pd foil and PdO.

Fig. S4. XRD patterns of HTA Pd/SSZ-13, H2 900 H-SSZ-13, and H2 900 Pd/SSZ-13.