Interaction between chemisorbed N2 and Li promoter atoms: A comparison between the stepped Ru(109) and the atomically smooth Ru(001) surfaces

Chemical Reactions at Clean and Alkali-Doped Mismatched Metal/Metal Interfaces

“…On the other hand, alkali-metal doping is a powerful tool to manipulate the physical and chemical properties of surfaces and it is widely used for tailoring new catalysts. For these reasons, the study of alkali promotional effects on surfaces and interfaces continues to be one of the main topics of surface science. − In particular, the dissociation of CO is a key catalytic reaction step in the Fischer−Tropsch process, which is strongly influenced by alkali metals added as promoters to transition-metal catalysts. The alkali promotional role on CO dissociation was found to be related to both short-range electrostatic interactions and the direct orbital overlap .…”

Role of Electrostatic Interactions on Engineering Reaction Barriers: The Case of CO Dissociation on Supported Cobalt Particles

“…Similar effects for various adsorbate/substrate systems have been reported in the literature. [19][20][21][22][23][24][25][26][27][28][29][30][31][32] We selected a series of dopants of various electronegativities and found that the larger electronegativity difference between the doping element and cobalt was the stronger the stabilizing effect turned out to be. Our study illustrates the promoter effect by doping a reducing atom, which paves the way to enhance the efficiency of CO activation.…”