“…A comprehensive treatise (147) based on the investigations of Kolbel et al discusses improvement of catalyst surface, composition of catalysts after use, iron carbides, reaction mechanism, catalyst composition and promoters, and preparation of precipitated catalysts. Phase changes in a reduced, fused, iron catalyst were studied (8) during the Fischer-Tropsch reaction with a synthesis gas containing 1 mole of hydrogen to 1 mole of carbon monoxide at 7.8 atmospheres pressure.…”