酸化ネオジム,3N5

化学的特性Neodymium Oxide, Nd2O3 is a blue-grey powder that is composed of the rare earth neodymium and oxygen. hygroscopic; absorbs atmospheric CO2; hexagonal; has slightly red fluorescence. Water insoluble, soluble in acids. It has special properties that make it very useful to the glass and ceramics industries. Neodymium Oxide gives a good aqua color in most glaze bases at 1-2%. At 4-7% it gives a pleasant lavender/grape color that appears as a different color under different artificial light sources. It is very strongly affected by iron, particularly in oxidation, giving a reliable perfect neutral transparent gray. Avoid trace iron impurities to achieve the brightest blue and lavender colors.

解説酸化ネオジム(Ⅲ)Nd2O3(336.48)．ネオジムの水酸化物や硝酸塩を空気中で強熱すると得られる．青紫色の結晶．密度7.24 g cm－3．融点2300 ℃．水，アルカリに不溶，酸に可溶．特殊光学ガラス(ネオジムガラス)，固体レーザー発光材，セラミックコンデンサー，ネオジム磁石，耐熱るつぼ，セラミックスなどに用いられる．

用途ファインセラミックス、超電導材料用

使用Neodymium oxide (Nd2O3) is a light-blue powder used to color glass and as a pigment for ceramics. It is also used to make color TV tubes.

Neodymium oxide is produced from the two principal rare earth minerals, monazite, and bastnasite. The oxide is obtained as an intermediate in the recovery of neodymium metal (See Neodymium).The oxide also may be formed by thermal dissociation of neodymium oxalate, hydroxide or carbonate:Nd2(C2O4)3 → Nd2O3 + 6CO22Nd(OH)3 → Nd2O3 + 3H2ONd2(CO3)3 → Nd2O3 + 3CO2.

合成方法混合希土類溶液から溶媒抽出法で分離したネオジム溶液をシュウ酸で沈殿させ，焙焼して酸化ネオジムとする

純化方法Dissolve it in HClO4, precipitate it as the oxalate with doubly recrystallised oxalic acid, wash it free of soluble impurities, dry it at room temperature and ignite it in a platinum crucible at higher than 850o in a stream of oxygen. It is a blue powder. [Tobias & Garrett J Am Chem Soc 80 3532 1958.]