Low-temperature surface oxidation of hydrogen sulfide by oxygen
Titel:
Low-temperature surface oxidation of hydrogen sulfide by oxygen
Auteur:
Lin, Mei-Jan Lunsford, Jack H.
Verschenen in:
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering
Paginering:
Jaargang 12 (1977) nr. 3 pagina's 127-136
Jaar:
1977
Inhoud:
The oxidation of H2S by O2 at 25°C was investigated over the surface of MgO, NaY and MnNaY zeolites and silica-alumina. X-ray photoelectron spectroscopy (XPS or ESCA) evidence suggests that the oxidation produces elemental sulfur, sulfide ions and sulfite ions on the surface of MgO; whereas, H2S dissociates on zeolites, forming elemental sulfur. The manganese ions in the zeolite enhance the formation of sulfur. The oxidation was negligibly slow on the acidic silica-alumina surface. Electron paramagnetic resonance (EPR) evidence confirms that the ions S3-, S2O-, SO2-, SO3- and Sn- are formed on the surface of MgO during various stages of the oxidation reaction.
Tijdschrift beschrijving