X-ray photoelectron spectroscopy of oxidised pyrrhotite surfaces
1985; Elsevier BV; Volume: 20; Issue: 4 Linguagem: Inglês
10.1016/0378-5963(85)90168-0
ISSN1878-1071
Autores Tópico(s)Iron oxide chemistry and applications
ResumoThe Ovidation in ir-saturatated aqueous solution of fracture surface of a pyrrhotite mineral of composition FE0.89S has been studied by X-ray photoelectron spectroscopy. Elemental sulfur, together with sulfate, was formed when the mineral was oxidized with hydrogen peroxide solution. Oxidation in acetic acid solution resulted in a soluble iron product with a sulfur species which has a S(2p) binding energy only 0.2 eV less than that for elemental sulfur. Possible identification of this species in discused. Iron binded and sulfate, as well as iron-deficient sulfade, were observed at the surface of pyrrhotite treated with air-saturated ammonia solution.
Referência(s)