Gadolinium oxide 

 Chemical Formula Gd2O3 
 White amorphous powder. Density 7.407g/cm3. Melting point of 2330 ± 20 ℃ (with information that is 2420 ℃). Insoluble in water, soluble in acid to generate the corresponding salt. Easy to absorb water and carbon dioxide in the air, with ammonia, generating gadolinium hydrate deposits. 
 By the rare earth chloride solution by extraction, stripping, zinc reduction, plus oxalic acid precipitation, separation, derived from burning. 

 Nature 
 White amorphous tasteless powder, insoluble in water, soluble in acid. Easily when exposed in air to absorb moisture and carbon dioxide in the air and deterioration. 

 Preparation 
 Or mixed rare earth in monazite ore as raw material, extraction and other purification steps, a system of mixed rare earth samarium gadolinium solution. Gadolinium oxalate with oxalic acid to precipitate out, separation, drying, burning, obtained gadolinium oxide. 
 Gd2 (C2O4) 3 → Gd2O3 +3 CO2 ↑ +3 CO ↑ 

 Use 
 As yttrium aluminum and yttrium iron garnet mixing agents, medical devices in the sensitized fluorescence materials, nuclear reactor control materials, metal gadolinium Preparation of raw materials, manufacturing magnetic bubble materials and optical prism additives 


 Yttrium oxide (Y2o3) 99.9% 280 元 / kg 99.99% 330 yuan / kg 
 Lanthanum oxide (La2o3) 99.9% 120 元 / kg 99.99% 150 yuan / kg 
 Cerium oxide (Ceo2) 99.9% 130 元 / kg 99.99% 320 yuan / kg 
 Praseodymium oxide (Pr6on) 99.9% 500 元 / kg 99.99% 700 yuan / kg 
 Neodymium oxide (Nd2o3) 99.9% 750 元 / kg 99.99% 1000 yuan / kg 
 Samarium oxide (Sm2o3) 99.9% 150 元 / kg 99.99% 260 yuan / kg 
 Europium oxide (Eu2o3) 99.9% 13500 元 / kg 99.99% 17500 yuan / kg 
 Gadolinium oxide (Gd2o3) 99.9% 320 元 / kg 99.99% 450 yuan / kg 
 Terbium oxide (Tb4o3) 99.9% 13500 元 / kg 99.99% 17000 yuan / kg 
 Dysprosium oxide (Dy2o3) 99.9% 8500 元 / kg 99.99% 11500 yuan / kg 
 Holmium oxide (Ho2o3) 99.9% 2800 元 / kg 99.99% 3500 yuan / kg 
 Erbium oxide (Er2o3) 99.9% 750 元 / kg 99.99% 1200 yuan / kg 
 Thulium oxide (Tm2o3) 99.9% 6500 元 / kg 99.99% 9500 yuan / kg 
 Ytterbium oxide (Yb2o3) 99.9% 350 元 / kg 99.99% 500 yuan / kg 
 Lutetium oxide (Lu2o3) 99.9% 12000 元 / kg 99.99% 14500 yuan / kg