Neodymium(III) hydroxide explained

Neodymium(III) hydroxide is an insoluble inorganic compound with the chemical formula Nd(OH)3.[1] [2]

Preparation

Neodymium(III) nitrate and ammonia water will react to produce neodymium(III) hydroxide:[3]

Nd(NO3)3 + 3 NH3·H2O → Nd(OH)3↓ + 3 NH4NO3If the amount of Nd(NO3)3 is 40g/L, the amount of ammonia water needed is 0.50 mol/L. The ammonia water is mixed into the Nd(NO3)3 solution at the speed of 1.5mL/min, and polyethylene glycol is used to control pH. The process will produce neodymium(III) hydroxide powder with grain size ≤1μm.[4]

Chemical properties

Neodymium(III) hydroxide can react with acid and produce neodymium salts:

Nd(OH)3 + 3 H+ → Nd3+ + 3 H2OFor example, to create neodymium acetate with neodymium(III) hydroxide:

Nd(OH)3 + 3CH3COOH → Nd(CH3COO)3 + 3H2O

See also

Notes and References

  1. Web site: PubChem . Neodymium hydroxide (Nd(OH)3) . 2022-11-24 . pubchem.ncbi.nlm.nih.gov . en.
  2. Web site: Elements . American . Neodymium Hydroxide . 2022-11-24 . American Elements . en.
  3. 《无机化合物制备手册》. 朱文祥 主编. 化学工业出版社. 【III-119】氢氧化钕(neodymium hydroxide)
  4. 刘治平, 王晓铁. 氢氧化镧和氢氧化钕微粉的制备[J]. 《稀土》. Vol.25 No.3 Jun.2004