Fig. 5
From: Promoted cobalt metal catalysts suitable for the production of lower olefins from natural gas
Electron microscopy images of spent Co1Mn3–Na2S. Reaction conditions: 240–280 °C, 10 bar, and H2/CO = 2. a bright-field TEM image with a scale bar corresponding to 100 nm, and blue arrows to point out the presence of wax, b dark-field TEM images with a scale bar corresponding to 50 nm, c particle size distribution of Co nanoparticles supported on MnO, and d–f STEM-EDX maps of Co and Mn, and the scale bars correspond to 200 nm
