Is the methanation reaction over Ru single crystals structure dependent?

Is the methanation reaction over Ru single crystals structure dependent?

The influence of monoatomic steps and defects on the methanation reaction over ruthenium has been investigated. The experiments are performed on a Ru(0 1 54) ruthenium single crystal, which contains one monoatomic step atom for each 27 terrace atoms. The methanation activity is measured at one bar of hydrogen and CO in a high pressure cell, which enables simultaneous measurements of the local r...

Is the methanation reaction over Ru single crystals structure dependent?w

Surface Science Letters Catalytic Methanation over Single Crystal Nickel and Ruthenium: Reaction Kinetics on Different Crystal Planes and the Correlation of Surface Carbide Concentration with Reaction Rate

The kinetics of the reaction of H, and CO over single crystals of nickel ((100) and (111)) and ruthenium ((110) and (001)) have been studied as a function of pressure and Hz/CO ratio. A striking correlation has been observed between the measured surface carbide concentration and the rate of methane production while varying the Ha/CO ratio and the total pressure. This correlation is shown to be ...

Facet-Dependent Photoreduction on Single ZnO Crystals

Photocatalytic reactions occur at the crystal-solution interface, and hence specific crystal facet expression and surface defects can play an important role. Here we investigate the structure-related photoreduction at zinc oxide (ZnO) microparticles via integrated light and electron microscopy in combination with silver metal photodeposition. This enables a direct visualization of the photoredu...

Surface Science Letters Ethane Hydrogenolysis over Single Crystals of Nickel: Direct Detection of Structure Sensitivity *

Single crystal catalysts have been used to investigate ethane hydrogenolysis. The apparatus used in these studies allows for catalyst preparation and surface characterization in ultrahigh vacuum (UHV) with an in vacua transfer to a second UHV chamber designed for high pressure kinetic studies. Kinetic measurements on single crystals of nickel show the hydrogenolysis of ethane to be “structure s...