SEARCH Articles Figures Tables Highly Dispersed Transition Metal Ions in Oxides or Zeotype-Systems by PL Spectroscopy Metal ions oxidation Oxidation of transition metal ions in sedimentary processes Oxidation states of transition metal ions Oxidation, by transition-metal ions Transition ions Transition metal ions Transition metal oxide Transition metal oxide oxides Transition metals oxidation Transition oxides Transition-metal ions, oxidative polymerization