Mechanochemical transformation of pyrolusite via manganese reduction

The effects of dry grinding, in air, of pyrolusite (beta-MnO2) are examined and the changes in the oxidation states of manganese during the process and the structural transformations that result from the treatment are studied. The ground product is examined by X-ray powder diffraction, infrared abso...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials science letters 1993-03, Vol.12 (5), p.314-317
Main Author: MENDELOVICI, E
Format: Article
Language:English
Subjects:
Applied sciences
Chemical industry and chemicals
Exact sciences and technology
Industrial chemicals
Inorganic industry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The effects of dry grinding, in air, of pyrolusite (beta-MnO2) are examined and the changes in the oxidation states of manganese during the process and the structural transformations that result from the treatment are studied. The ground product is examined by X-ray powder diffraction, infrared absorption spectroscopy, surface area and chemical analysis. According to preliminary results, oxygen loss is the most plausible mechanism to explain the reduction of manganese during the grinding process, which may lead to non-stoichiometric manganese oxide phases. 14 refs.
ISSN:0261-8028
1573-4811
DOI:10.1007/BF01910088