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209317

Sigma-Aldrich

Copper chromite

Synonym(s):

Copperchromium oxide

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About This Item

Linear Formula:
2CuO · Cr2O3
CAS Number:
Molecular Weight:
311.08
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:
EC Index Number:
2346346
NACRES:
NA.23

form

powder

Quality Level

application(s)

battery manufacturing

SMILES string

O=[Cu].O=[Cr]O[Cr]=O

InChI

1S/2Cr.Cu.4O

InChI key

FULFYAFFAGNFJM-UHFFFAOYSA-N

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.

Application

Copper chromite is primarily used as a catalyst for hydrogenation reactions because of its ability to hydrogenate functional groups in aliphatic and aromatic compounds selectively. Industrially, copper chromite is used to reduce furfural to furfuryl alcohol and butyraldehyde to 1-butanol,partially reduce conjugated dienes to monoenes, and selectively reduce carbonyl groups in vegetable oils. This CuCr catalyst is studied for a variety of catalytic 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. Copper chromite/graphene oxide nanocomposite canbe used in energy storage applications.

Signal Word

Danger

Hazard Statements

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1 - Ox. Sol. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

5.1B - Oxidizing hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Deactivation mechanistic studies of copper chromite catalyst for selective hydrogenation of 2-furfuraldehyde.
Liu D, et al.
J. Catal., 299, 336-345 (2013)
Conversion of highly concentrated cellulose to 1,2-propanediol and ethylene glycol over highly efficient CuCr catalysts.
Xaio Z, et al.
Green Chemistry, 15, 891-895 (2013)
Pravin P Upare et al.
ChemSusChem, 13(18), 5050-5057 (2020-07-15)
We report for the first time the selective production of mannitol, a low-calorie sweetener and an important pharmaceutical ingredient, from fructose using Cu-SiO2 nanocomposite as catalyst and 1-butanol as solvent. When compared with water and ethanol, a lower fructose solubility
Maura Koehle et al.
ChemSusChem, 10(1), 91-98 (2016-12-13)
A four-step catalytic process was developed to produce p-methylstyrene from methylfuran, a biomass-derived species. First, methylfuran was acylated over zeolite H-Beta with acetic anhydride. Second, the acetyl group was reduced to an ethyl group with hydrogen over copper chromite. Third

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