Fig. 4: Characterizations of verifying the effect of hydrogen hopping in ammonia decomposition. | Nature Communications

Fig. 4: Characterizations of verifying the effect of hydrogen hopping in ammonia decomposition.

From: Dispersed surface Ru ensembles on MgO(111) for catalytic ammonia decomposition

Fig. 4

a TPSR over the Ru/MgO(111) and Ru/MgO(100) based on the NH3 decomposition reaction; b H2-TPD profiles of supported Ru samples; c in situ DRIFTS study of NH3 adsorption over Ru/MgO(111) under different temperatures; d time-resolved DRIFTS of NH3 transformation as a function of time over Ru/MgO(111) at 300 °C; e reversible cycles of DRIFTS for NH3 transformation under alternative sweeping between NH3 and Ar at at 300 °C; f O 1s, g Ru 3d and h N 1s of AP-XPS spectra at 300 °C over Ru/MgO(111) under alternative sweeping between 0.9 mbar Ar and 0.9 mbar NH3.

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