Ferric-ferrous equilibrium in low-iron sodium-silicate glasses

摘要：

M(o)ssbauer and Electron paramagnetic resonance measurements have been performed on iron-containing sodium-silicate glasses with Na2O/SiO2 ratio equal to 19/81 and Fe2O3 content up to 7 wt. ％.. The influence of total iron content on local environment of ferric and ferrous ions and ferric/ferrous ratio were investigated by the combination of both spectroscopic methods. Fe2+ behaves as a network modifier occupying predominantly octahedral sites while Fe3+ is a network former occupying tetrahedral sites. It was also observed solated Fe3+ (broad hyperfine magnetic splitting) in low-iron samples by M(o)ssbauer spectroscopy. Ferrous/ ferric ration decreases with increasing total iron content.

关键词： silicate glass melt RedOx ratio EPR M(o)ssbauer spectroscopy

作者: E. Dunaeva K.Pokholok N. Efimov V. Minin E. Brunet S. Müller

作者单位: Faculty of Materials Science, Moscow State University, Moscow, Russia Dept. of Chemistry, Moscow State University, Moscow, Russia Kurnakov Institute of General and Inorganic Chemistry, Russian academy of science, Moscow, Russia Saint-Gobain Recherche, 93303 Aubervilliers cedex, France

会议类型: 国际会议

会议名称: Ninth International Conference on Molten Slags,Fluxes and Salts(第九届国际熔渣、溶剂与熔盐学术会议 MOLTEN12)

会议地点: 北京

会议语种:英文

页码: 1-9

在线出版日期: 2012-05-27（万方平台首次上网日期，不代表论文的发表时间）