Hunan Yiyang Rare Earth General Factory is located inYiyang city,Hunan province,having transportation facilitiesfor train and vessel.It is also within easy reac
Fine powders of γ-Fe<sub>2</sub>O<sub>3</sub>,doped with Y<sub>2</sub>O<sub>3</sub>,CeO<sub>2</sub>,Eu<sub>2</sub>O<sub>3</sub> or Tb<sub>2</sub>O<sub>3&
Four monoalkyl esters of isoalkylphosphonic acids have been studied for the chromatographic separation ofrare earths (RE).The relationship between distribution ra