Changes in the surface structure and composition of an iron catalyst of reduced or unreduced Fe2O3 during the reaction of carbon monoxide and hydrogen

摘要: Abstract Iron oxide (Fe2O3) prepared by decomposition of iron nitrate acquires a catalytic activity in the CO + H2 (1 atm) reaction at 250 °C even without any reduction pretreatment H2. The nonreduced catalyst and reduced one have their surface bulk compositions modified different ways. In both cases is covered carbon small fraction it directly involved Fischer-Tropsch with H2, whereas remainder transformed into carbide not or stays as inactive carbon. formation faster for sample must be correlated higher rate deactivation this than sample. A sequence steps, catalysts, proposed, accounts former material.