H2S adsorption on chromium, chromia, and gold/chromia surfaces: Photoemission studies

H2S adsorption on chromium, chromia, and gold/chromia surfaces: Photoemission studies

Investigation of H2 and H2S adsorption on niobium- and copper-doped palladium surfaces.

Alloying or doping Pd may be an option for overcoming sulfur poisoning. The current investigation probes the mechanism associated with sulfur binding to determine if Nb and Cu are appropriate doping metals. In this study, the effect of doping Pd with Cu or Nb on the binding strength of H(2) and H(2)S was investigated using plane-wave density functional theory-based electronic structure calculat...

Dynamics and Separation-based Adsorption of Binary Mixtures of CH4, CO2 and H2S on MIL-47: GCMC and MD Studies

This study aimed to investigate the adsorption of CH4, CO2, H2S at a temperature of 298.15 K and pressurerange of 0.1 to 30 atm, and compare the results with experimental data for MIL-47 using GCMC. Themaximum CH4, CO2 and H2S adsorptions were 3.6, 10.45, and 12.57 mol.kg-1, respectively. In addition, theselectivity for binary mixtures of CH4/CO2 and CH4/H2S was calculated. Th...

Adsorption and thermal decomposition of H2S on Si(100)

Adsorption and thermal decomposition of H2S on Si(1 0 0)-2 1 are studied by means of temperature-programmed desorption (TPD) and X-ray photoemission spectroscopy (XPS) with synchrotron radiation. The H2S molecule dissociates to form H and HS on the Si surface at adsorption temperature of 115 K. The Si(1 0 0)-2 1 surface structure is conserved upon the adsorption of H2S due to bonding of dissoci...

Low-temperature adsorption of H2S on Ag(111).

H(2)S forms a rich variety of structures on Ag(111) at low temperature and submonolayer coverage. The molecules decorate step edges, exist as isolated entities on terraces, and aggregate into clusters and islands, under various conditions. One type of island exhibits a (√37×√37)R25.3° unit cell. Typically, molecules in the clusters and islands are separated by about 0.4 nm, the same as the S-S ...