Catalytically Active CO–H2 Co-adsorption Phases Over the Ru(0001) Surface for Fischer–Tropsch Synthesis: An Ab Initio Atomistic Thermodynamics Investigation
摘要
The ab initio atomistic thermodynamics method was utilized to enhance comprehension of the catalytic Fischer–Tropsch process by clarifying the active phases of co-adsorbed CO and H2 systems on the Ru(0001) surface. This entails investigating the stability of CO/Ru(0001), H/Ru(0001), and H/CO-modified Ru(0001) systems at different coverages of CO and H2. The saturation coverage of CO and atomic H on the Ru(0001) surface was calculated to be 13/16 ML and 1 ML, respectively. At 500 K, among all CO–H configurations over the Ru(0001) surface, a phase comprising 12/16 ML of H and 1/16 ML of CO was identified as an optimum active phase for the FT process, yielding high selectivity and reaction rate.
Graphical Abstract