![]() Crescentini, Lamberto & Fisher, William B. "Principal magnetic susceptibilities and uniaxial stress experiments in CoO". It is used extensively in the ceramics industry as an. In this work, ultrafine cobalt oxide (CoO x) co-catalysts with specific Co valence states have been successfully synthesized, which are anchored on a tantalum oxynitride (TaON) host photocatalyst via a photochemical metalorganic deposition method. "Percolation effects and magnetic properties of the randomly diluted fcc system CopMg1-pO". Cobalt(II) oxide is an inorganic compound that has been described as an olive-green or gray solid. Ullmann's Encyclopedia of Industrial Chemistry. ^ a b Donaldson, John Dallas Beyersmann, Detmar (2005).^ Advanced Search – Alfa Aesar – A Johnson Matthey Company Archived at the Wayback Machine.CRC Handbook of Chemistry and Physics (87th ed.). The additive provides a deep shade of blue named cobalt blue. It may also be prepared by precipitating the hydroxide, followed by thermal dehydration: CoX 2 + 2 KOH → Co(OH) 2 + 2 KX Co(OH) 2 → CoO + H 2O Reactions Īs can be expected, cobalt(II) oxide reacts with mineral acids to form the corresponding cobalt salts: CoO + 2 HX → CoX 2 + H 2O Applications Ĭobalt(II) oxide has for centuries been used as a coloring agent on kiln fired pottery. Cobalt dioxide (CoO2) is not marketed for. Ĭobalt(II,III) oxide decomposes to cobalt(II) oxide at 950 ☌: 2 Co 3O 4 → 6 CoO + O 2 Grey cobaltic oxide (Co2O3) is 90 CoO and mauve cobalt carbonate (CoCO3) has 63 effective stain content. Preparation Ĭobalt(II) oxide is prepared by oxidation of cobalt powder with air or by thermal decomposition of cobalt(II) nitrate or the carbonate. A related material is cobalt(II,III) oxide, a black solid with the formula Co 3O 4.ĬoO crystals adopt the periclase ( rock salt) structure with a lattice constant of 4.2615 Å. The XRD pattern of the as-prepared CoSAC/GNRs shows a main diffraction peak at about 26.1 without discernible diffraction peaks of cobalt metal or oxides (SI. ![]() It is used extensively in the ceramics industry as an additive to create blue-colored glazes and enamels, as well as in the chemical industry for producing cobalt(II) salts. Cobalt(II) oxide is an inorganic compound that has been described as an olive-green or gray solid.
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