Classification: | High Purity Material |
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Grade: | AR |
Specific Usage: | Pratical Use |
Content: | Standard |
Usage: | Laboratory Reagents |
Source: | Extract Natural Things |
Samples: |
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Customization: |
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Copper chromite Basic information |
Product Name: | Copper chromite |
Synonyms: | tetraoxid dichromito-me?naty;chromium copper oxid;CopperchromitebariumpromotedCrCuOCuOBaO;Copperchromite,bariumpromoted(62-64%Cr2CuO4,22-24%CuO,6%BaO,0-4%Graphite,1%CrO3,1%Cr2O3);CUPRICCHROMITE;COPPER(II)CHROMATE(III);COPPER(II)DICHROMATE,DIHYDRATE;chromiumcopperoxide(cr2cuo4) |
CAS: | 12018-10-9 |
MF: | CrCuH2O |
MW: | 133.56 |
EINECS: | 234-634-6 |
Product Categories: | Inorganics;inorganic compound;12018-10-9 |
Mol File: | 12018-10-9.mol |
Copper chromite Chemical Properties |
density | 5.400 |
vapor pressure | 0-0.08Pa at 190-200ºC |
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) ( |
Copper chromite Usage And Synthesis |
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. |
uses | 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, ------ and ammonium hydroxide; the orange precipitate of copper ammonium chromate formed is dried and then heated below 400°C. |
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 --- to 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. |
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