12053-18-8 Usage
Description
Copper chromite, also known as CuCr2O4, is a black powder inorganic pigment that adopts a spinel crystal structure. It is created through high-temperature calcination of copper(II) oxide and chromium(III) oxide or the thermal decomposition of copper chromate. Copper chromite is one of the most efficient materials and has a wide range of commercial applications, particularly as catalysts in various unit processes of organic synthesis.
Uses
Used in Catalyst Applications:
Copper chromite is used as a catalyst for hydrogenation reactions due to its ability to selectively hydrogenate functional groups in aliphatic and aromatic compounds. It plays a crucial role in industrial processes such as reducing furfural to furfuryl alcohol, butyraldehyde to 1-butanol, partially reducing conjugated dienes to monoenes, and selectively reducing carbonyl groups in vegetable oils.
Used in Combustion Control:
Copper chromite is used as a catalyst for combustion to help control burn rate, making it a valuable component in various industrial applications where precise control of combustion is necessary.
Used in Light-Absorbing Pigments:
Copper chromite is utilized as a light-absorbing pigment, taking advantage of its black powder properties for various applications in the pigment industry.
Used in Pollution Abatement:
Copper chromite serves as a catalyst to remove aqueous organic wastes, volatile organic compounds (VOCs), and vehicular primary emissions such as carbon monoxide (CO), unburned hydrocarbons, nitrogen oxides (NOx), and soot, contributing to environmental protection and pollution control.
Used in Organic Synthesis:
In the field of organic synthesis, copper chromite is used as a catalyst for various unit processes, including hydrogenation, dehydrogenation, hydrogenolysis, oxidation, alkylation, cyclization, and more, showcasing its versatility and efficiency in chemical reactions.
Preparation
Copper chromite is produced by thermal decomposition of one of three substances. The traditional method is by the ignition of copper chromate:2CuCrO4 → 2CuCrO3 + O2Copper barium ammonium chromate is the most commonly used substance for production of copper chromite. The resulting copper chromite mixture produced by this method can only be used in procedures that contain materials inert to barium, as barium is a product of the decomposition of copper barium ammonium chromate, and is thus present in the resulting mixture. The by-product copper oxide is removed using an acetic acid extraction, consisting of washing with the acid, decantation and then heat drying of the remaining solid to yield isolated copper chromite. Copper chromite is produced by the exposure of copper barium ammonium chromate to temperatures of 350-450 °C, generally by a muffle furnace:Ba2Cu2(NH4)2(CrO4)5 → CrCuO3 + CuO + 2Ba + 4H2O + 4Cr + N2 + 6O2
Check Digit Verification of cas no
The CAS Registry Mumber 12053-18-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,0,5 and 3 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 12053-18:
(7*1)+(6*2)+(5*0)+(4*5)+(3*3)+(2*1)+(1*8)=58
58 % 10 = 8
So 12053-18-8 is a valid CAS Registry Number.
InChI:InChI=1/2Cr.2Cu.5O/rCr2O3.2CuO/c3-1-5-2-4;2*1-2
