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- Title
An XPS study of products formed on pyrite and pyrrhotine by reacting with palladium(II) chloride solutions.
- Authors
Romanchenko, A.; Mikhlin, Yu.
- Abstract
X-ray photoelectron spectroscopy (XPS) is used to study the products formed by reacting the main iron sulfide minerals-pyrite and pyrrhotine-with an HPdCl solution (pH 2, 25 °C). Palladium deposition data are obtained depending on time and the pretreatment of the surface of the minerals. Palladium is shown to be bonded as PdS sulfide nanoparticles and, to a small degree, as an adsorbed Pd(II) chloride complex. Preoxidation of the minerals has little effect on the composition of Pd-containing surface products on pyrrhotine, but on pyrite a part of Pd(II) is reduced to metal and lower sulfides. No reduced products form if oxidation results in a metal-deficient polysulfide layer on the surface.
- Subjects
X-ray photoelectron spectroscopy; PYRITES; PYRRHOTITE; PALLADIUM compounds; CHLORIDES; IRON sulfides; OXIDATION
- Publication
Journal of Structural Chemistry, 2015, Vol 56, Issue 3, p531
- ISSN
0022-4766
- Publication type
Article
- DOI
10.1134/S002247661503021X