Fig. 4
From: Promoted cobalt metal catalysts suitable for the production of lower olefins from natural gas
XRD analysis of spent Co1Mn3, Co1Mn3–Na2S, Co3Mn1–Na2O. Reaction conditions: 240–280 °C, 10 bar, and H2/CO = 2. a Background corrected XRD patterns and b rietveld QPA-based crystalline phase compositions, which shows the MnxCoyO4 phase (blue), Mn0.95O (cyan), MnCO3 (green), hcp Co (violet) and Co2C (brown)
