| Identification | Back Directory | [Name]
Copper chromite | [CAS]
12018-10-9 | [Synonyms]
CUPRICCHROMITE
COPPER CHROMITE
COPPER(II) CHROMITE
chromium copper oxid
COPPERCHROMIUM OXIDE
COPPER(II)CHROMATE(III)
COPPER CHROMITE CATALYST
tetraoxid dichromito-me?naty
chromiumcopperoxide(cr2cuo4)
copper dichromium tetraoxide
COPPER(II)DICHROMATE,DIHYDRATE
CopperchromitebariumpromotedCrCuOCuOBaO
62-64%Cr2CuO4,22-24%CuO,6%BaO,0-4%graphite1%CrO31%Cr2O3CrO31%Cr2O3
Copperchromite,bariumpromoted(62-64%Cr2CuO4,22-24%CuO,6%BaO,0-4%Graphite,1%CrO3,1%Cr2O3) | [EINECS(EC#)]
235-000-1 | [Molecular Formula]
CrCuO3 | [MDL Number]
MFCD00044868 | [MOL File]
12018-10-9.mol | [Molecular Weight]
163.54 |
| Chemical Properties | Back Directory | [Appearance]
fine brown to black powder | [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 | [InChIKey]
FULFYAFFAGNFJM-UHFFFAOYSA-N | [SMILES]
O([Cr]=O)[Cr]=O.O=[Cu] | [EPA Substance Registry System]
Chromium copper oxide (Cr2CuO4)(12018-10-9) |
| Hazard Information | Back Directory | [Chemical Properties]
fine brown to black powder | [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. | [Uses]
Copper chromite is used as a hydrogenation catalyst. | [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. | [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. | [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. |
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