Abstract. Promoting a precipitated FeCuSiO2 catalyst with Mn has been shown to significantly improve its catalytic activity for Fischer–Tropsch synthesis (FTS). Although the impact of K promotion on the activity of Fe catalysts with and without Mn addition has been studied previously, no one has previously delineated how K influences the concentration of active surface intermediates and t…
Abstract. Recently, we reported that Cr, Mn, or Zr promotion of a precipitated Cu-promoted Fe Fischer–Tropsch synthesis (FTS) catalyst significantly improves its catalytic activity. In this study, we used steady-state isotopic transient kinetic analysis (SSITKA) of methanation to investigate the activity of these catalysts at the site level, providing insight into how this promotion enhan…