Trinickel boride is a compound of
nickel
Nickel is a chemical element with symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel is a hard and ductile transition metal. Pure nickel is chemically reactive but large pieces are slow to ...
and
boron
Boron is a chemical element with the symbol B and atomic number 5. In its crystalline form it is a brittle, dark, lustrous metalloid; in its amorphous form it is a brown powder. As the lightest element of the ''boron group'' it has th ...
with
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, ...
. It is one of the
borides of nickel.
The compound was described in 1959 by
R. Fruchart,
[ S. Rundquist,][ and L. H. Anderson and R. Kiessling.][ It is a hard solid with the ]cementite
Cementite (or iron carbide) is a compound of iron and carbon, more precisely an intermediate transition metal carbide with the formula Fe3C. By weight, it is 6.67% carbon and 93.3% iron. It has an orthorhombic crystal structure. It is a hard, brit ...
crystal structure
In crystallography, crystal structure is a description of the ordered arrangement of atoms, ions or molecules in a crystal, crystalline material. Ordered structures occur from the intrinsic nature of the constituent particles to form symmetric pat ...
.[
]
Synthesis
Trinickel boride can be obtained, as grains embedded in a nickel matrix, by heating Brown
Brown is a color. It can be considered a composite color, but it is mainly a darker shade of orange. In the CMYK color model used in printing or painting, brown is usually made by combining the colors orange and black. In the RGB color model used ...
's P-1 and P-2 "nickel boride"catalyst to 250 °C. This catalyst is produced by reduction of nickel salts with sodium borohydride.[
Trinickel boride can be obtained also by compressing nickel and boron powders with ]explosive
An explosive (or explosive material) is a reactive substance that contains a great amount of potential energy that can produce an explosion if released suddenly, usually accompanied by the production of light, heat, sound, and pressure. An expl ...
s.[
Recently it has been found that can be formed (together with other nickel borides) by heating sodium borohydride with powdered nickel metal to 670 °C in a closed vessel, so that the released ]hydrogen
Hydrogen is the chemical element with the symbol H and atomic number 1. Hydrogen is the lightest element. At standard conditions hydrogen is a gas of diatomic molecules having the formula . It is colorless, odorless, tasteless, non-toxic, an ...
creates a pressure of up to 3.4 MPa. The main reactions can be summarized as
: 2 ↔ 2NaH +
: 3Ni + 2 + NaH ↔ + 3 + 2 + Na
but other reactions occur, yielding other borides.[
]
See also
* Dinickel boride
Dinickel boride is a chemical compound of nickel and boron with formula . It is one of the borides of nickel.
The formula "" and the name "nickel boride" are often used for a nickel-boron catalyst obtained by reacting nickel salts with sodiu ...
References
US National Institutes of Health
The National Institutes of Health, commonly referred to as NIH (with each letter pronounced individually), is the primary agency of the United States government responsible for biomedical and public health research. It was founded in the late ...
(2020):
Nickel boride (Ni3B)
. Compound page at the NCBI PubChem site. Accessed on 2020-07-18.[Mahboobeh Shahbazi, Henrietta Cathey, Natalia Danilova and Ian D.R. Mackinnon (2018): "Single Step Process for Crystalline Ni-B Compounds". ''Materials'', volume 11, issue 7, article 1259-. ]
[L. H. Anderson and R. Kiessling, Acta Chem. Scand., 4, 160 (1950).]
[S. Rundquist, Acta Chem. Scand., 12, 658 (1959).]
[R. Fruchart, Ann. Chim., 4, 1247 (1959).]
[Michail A. Korchagin, Dina V. Dudina, Boris B. Bokhonov, Natalia V. Bulina, Arina V. Ukhina, and Igor S. Batraev (2018): "Synthesis of nickel boride by thermal explosion in ball-milled powder mixtures". ''Journal of Materials Science'', volume 2018, issue 19. ]
[L. J. E. Hofer, J. F. Shultz, R. D. Panson, and R. B. Anderson (1964): "The nature of the nickel boride formed by the action of sodium borohydride on nickel salts". ''Inorganic Chemistry'', volume 3, issue 12, pages 1783–1785. ]
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Borides
Nickel compounds