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Cerium(IV) oxide, also known as ceric oxide, ceric dioxide, ceria, cerium oxide or cerium dioxide, is an oxide of the rare-earth metal cerium. It is a pale yellow-white powder with the chemical formula CeO 2. It is an important commercial product and an intermediate in the purification of the element from the ores.
Cerium(IV) oxide ("ceria") has the fluorite structure, similarly to the dioxides of praseodymium and terbium. Ceria is a nonstoichiometric compound, meaning that the real formula is CeO 2−x, where x is about 0.2. Thus, the material is not perfectly described as Ce(IV). Ceria reduces to cerium(III) oxide with hydrogen gas. [25]
Cerium(III) oxide, also known as cerium oxide, cerium trioxide, cerium sesquioxide, cerous oxide or dicerium trioxide, is an oxide of the rare-earth metal cerium. It has chemical formula Ce 2 O 3 and is gold-yellow in color. According to X-ray crystallography, the Ce(III) ions are seven-coordinate, a motif typical for other trivalent lanthanide ...
Print/export Download as PDF; Printable version; In other projects ... move to sidebar hide. Cerium oxide may refer to: Cerium(III ) oxide, Ce 2 O 3, also known as ...
Print/export Download as PDF; Printable version; In other projects Wikidata item; Appearance. ... cerium: Ce +2 +3 +4: f-block groups [10] 59
The high concentration and mobility of the oxide ion vacancies results in a high ionic conductivity in this material. In addition to its high ionic conductivity GDC is an attractive alternative to YSZ as an electrolyte due to low reactivity and good chemical compatibility with many mixed conducting cathode materials . [ 4 ]
Cerium nitrates also form 4:3 and 1:1 complexes with 18-crown-6 (the ratio referring to that between cerium and the crown ether). Classically CAN is a primary standard for quantitative analysis. [8] [9] Cerium(IV) salts, especially cerium(IV) sulfate, are often used as standard reagents for volumetric analysis in cerimetric titrations. [10]
Cerium(IV) sulfate, also called ceric sulfate, is an inorganic compound. It exists as the anhydrous salt Ce ( SO 4 ) 2 as well as a few hydrated forms: Ce(SO 4 ) 2 (H 2 O) x , with x equal to 4, 8, or 12.