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HomeProduct name listCopper chromite

Copper chromite

Synonym(s):Copperchromium oxide

  • CAS NO.:12018-10-9
  • Empirical Formula: CrCuH2O
  • Molecular Weight: 133.56
  • MDL number: MFCD00044868
  • EINECS: 234-634-6
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-10-25 23:13:37
Copper chromite  Structural

What is Copper chromite ?

Chemical properties

copper chromite is a black, tetragonal powder that is insoluble in water. It is prepared by the heating to 400°C of copper(II) chromate(VI).

Physical properties

Grayish-black tetragonal crystals; density 5.4 g/cm3. When heated to elevated temperatures (above 900°C) copper(II) chromite decomposes to cupric chromate(II), CuCrO2 and chromium (VI) oxide, CrO3. Copper(II) chromite is insoluble in water and dilute acids.

The Uses of Copper chromite

Copper chromite is used as a hydrogenation catalyst.

Preparation

Copper(II) chromite is obtained by heating copper chromate, CuCrO4 at 400°C. The Adkin catalyst, a mixture of copper oxide and copper chromite, is prepared by mixing aqueous solutions of copper nitrate, sodium dichromate and ammonium hydroxide; the orange precipitate of copper ammonium chromate formed is dried and then heated below 400°C.

What are the applications of Application

Copper chromite is primarily used as a catalyst forhydrogenation reactions because of its ability to hydrogenate functional groupsin aliphatic and aromatic compounds selectively. Industrially, copper chromiteis used to reduce furfural to furfuryl alcohol and butyraldehyde to 1-butanol,partially reduce conjugated dienes to monoenes, and selectively reduce carbonylgroups in vegetable oils. This CuCr catalyst is studied for a variety ofcatalytic applications including converting the hydrogenolysis of cellulose.It is also used as a catalyst for combustion to help control burn rate and as alight-absorbing pigment.

General Description

Copper chromite is a black powder and inorganic pigment thatadopts a spinel crystal structure. It can be made by the high-temperaturecalcination of copper(II) oxide and chromium(III) oxide or the thermaldecomposition of copper chromate, which evolves oxygen at higher temperaturesand decomposes to copper chromite.

Properties of Copper chromite

Density  5.400
vapor pressure  0-0.08Pa at 190-200℃
solubility  insoluble in H2O, dilute acid solutions
form  Powder
color  Brown to black
Water Solubility  insoluble H2O, dilute acids, conc HCl [MER06]
InChI InChI=1S/2Cr.Cu.4O
EPA Substance Registry System Chromium copper oxide (Cr2CuO4) (12018-10-9)

Safety information for Copper chromite

Computed Descriptors for Copper chromite

InChIKey FULFYAFFAGNFJM-UHFFFAOYSA-N
SMILES O([Cr]=O)[Cr]=O.O=[Cu]

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