Neodymium(III) hydroxide is an insoluble
inorganic compound
In chemistry, an inorganic compound is typically a chemical compound that lacks carbon–hydrogen bonds, that is, a compound that is not an organic compound. The study of inorganic compounds is a subfield of chemistry known as '' inorganic chemist ...
with the
chemical formula
In chemistry, a chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, ...
Nd(OH)
3.
Production
Neodymium(III) nitrate
Neodymium nitrate is a chemical compound with the formula Nd(NO3)3. It is typically encountered as the hexahydrate, Nd(NO3)3·6H2O, which is more accurately formulated as d(NO3)3(H2O)42H2O to reflect the crystal structure. It decomposes to NdO ...
and
ammonia water
Ammonia solution, also known as ammonia water, ammonium hydroxide, ammoniacal liquor, ammonia liquor, aqua ammonia, aqueous ammonia, or (inaccurately) ammonia, is a solution of ammonia in water. It can be denoted by the symbols NH3(aq). Although ...
will react to produce neodymium(III) hydroxide
[《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）]
: Nd(NO
3)
3 + 3 NH
3·H
2O → Nd(OH)
3↓ + 3 NH
4NO
3
If the amount of Nd(NO
3)
3 is 40g/L, the amount of ammonia water needed is 0.50 mol/L. The ammonia water is mixed into the Nd(NO
3)
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.
[刘治平, 王晓铁. 氢氧化镧和氢氧化钕微粉的制备 《稀土》. Vol.25 No.3 Jun.2004]
Chemical properties
Neodymium(III) hydroxide can react with
acid
In computer science, ACID ( atomicity, consistency, isolation, durability) is a set of properties of database transactions intended to guarantee data validity despite errors, power failures, and other mishaps. In the context of databases, a sequ ...
and produce
neodymium
Neodymium is a chemical element with the symbol Nd and atomic number 60. It is the fourth member of the lanthanide series and is considered to be one of the rare-earth metals. It is a hard, slightly malleable, silvery metal that quickly tarnishes i ...
salts:
: Nd(OH)
3 + 3 H
+ → Nd
3+ + 3 H
2O
For example, to create
neodymium acetate
Neodymium acetate is an inorganic salt composed of a neodymium atom trication and three acetate groups as anions where neodymium exhibits the +3 oxidation state. It has a chemical formula of Nd(CH3COO)3 although it can be informally referred to ...
with neodymium(III) hydroxide:
:Nd(OH)
3 + 3CH
3COOH → Nd(CH
3COO)
3 + 3H
2O
See also
*
Neodymium
Neodymium is a chemical element with the symbol Nd and atomic number 60. It is the fourth member of the lanthanide series and is considered to be one of the rare-earth metals. It is a hard, slightly malleable, silvery metal that quickly tarnishes i ...
*
Hydroxide
Hydroxide is a diatomic anion with chemical formula OH−. It consists of an oxygen and hydrogen atom held together by a single covalent bond, and carries a negative electric charge. It is an important but usually minor constituent of water. I ...
*
Lanthanide
The lanthanide () or lanthanoid () series of chemical elements comprises the 15 metallic chemical elements with atomic numbers 57–71, from lanthanum through lutetium. These elements, along with the chemically similar elements scandium and yttr ...
References
{{hydroxides
Neodymium compounds
Hydroxides