Application
Copper chromite serves as an efficient catalyst across various industrial applications, primarily recognized for its role in organic synthesis and pollution abatement. This black, spinel-structured inorganic pigment can be synthesized by the high-temperature calcination of copper(II) oxide and chromium(III) oxide or by decomposing copper chromate. The core utility of copper chromite lies in catalyzing processes such as hydrogenation, dehydrogenation, and oxidation. It is adept at selectively hydrogenating functional groups in aliphatic and aromatic compounds, making it indispensable in converting substances like furfural to furfuryl alcohol and butyraldehyde to 1-butanol. Beyond these, it also partially reduces conjugated dienes to monoenes and targets carbonyl groups in vegetable oils. The environmental benefits of copper chromite extend to its ability to remove pollutants such as aqueous organic wastes, volatile organic compounds (VOC), and vehicular emissions like CO, unburned hydrocarbons, NOx, and soot. Moreover, it plays a role in controlling burn rates in combustion reactions and acts as a light-absorbing pigment.