Understanding the chemistry during the preparation of Pd/SSZ-13 for the low-temperature NO adsorption: The role of NH4-SSZ-13 support

[Display omitted] •Improvement effect of NH4-SSZ-13 support on Pd2+ ions dispersion was investigated.•Pd(NO3)2 precursor transformed to Pd(NH3)x2+ intermediate during calcination.•Pd(NH3)x2+ converted to Pd2+ ions by oxidizing NH3 ligands to N2.•Formation of Pd(NH3)x2+ is critical for achieving high...

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