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. 2015 May 1;6(7):3965–3974. doi: 10.1039/c5sc00789e

Fig. 7. NH3 evolution via metal nitride hydrogenation at various temperatures: (A) NH3 yield vs. time (arithmetic average of three experiments) from the reactions of Ca3N2, Sr2N, and Mn6N2.58 with H2 at 1 bar, shown on the upper panel, and the corresponding temperature profile, on the lower panel; (B) weight fraction of Ca3N2 heated for 60 min under H2 (XRD analyses in air). Error bars are via error propagation within a 95% confidence interval. Solid lines are a guide only.

Fig. 7