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. 2020 Jan 3;11:61. doi: 10.1038/s41467-019-13691-4

Fig. 1. Catalysts characterizations.

Fig. 1

a XRD patterns of CuxFeyMg4–LDH precursors with three molar ratios of Cu/Fe (1:1, 2:1, 4:1, and 6:1, respectively). b XRD patterns of CuxFeyMg4–MMO calcined samples obtained from calcination of LDHs precursors. c H2-TPR profiles of CuxFeyMg4–MMO samples. d XRD patterns of CuxFey obtained from activation of MMO samples in syngas (25% CO+25% H2+50% CO2) under optimum conditions (300 °C (2 h)+350 °C (1 h); rate: 2 °C min−1) and passivation.