Open links in new tab
  1. Copilot Answer
    Wikipedia
    https://en.wikipedia.org › wiki › Cerium(IV)_oxide

    Cerium(IV) oxide - Wikipedia

    • 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 CeO2. It is an important commercial product and an intermediate in the purification of the element from the ores. The distinctive property of this material is its reversibl… See more

    Production

    Cerium occurs naturally as oxides, always as a mixture with other rare-earth elements. Its principal ores are
    Cerium(IV) … See more

    Characteristics

    CeO2 is one of the most widely studied oxides of Cerium. CeO2 is the most-oxidized form of Cerium, 4f states strongly hybridizes with the O 2p states making 4f electrons delocalized. These states form a wide disper… See more

    CAS Number1306-38-3 · 12014-56-1 (hydrate)
    3D model (JSmol)Interactive image
    ChEBICHEBI:79089
    ChemSpider8395107
    Structure and defect behavior

    Cerium oxide adopts the fluorite structure, space group Fm3m, #225 containing 8-coordinate Ce and 4-coordinate O . At high temperatures it releases oxygen to give a non-stoichiometric, anion deficient form that retains the … See more

    Natural occurrence

    Cerium(IV) oxide occurs naturally as the mineral cerianite-(Ce). It is a rare example of tetravalent cerium mineral, the other examples being stetindite-(Ce) and dyrnaesite-(La). The "-(Ce)" suffix is known as Levinso… See more

    Applications

    Cerium has two main applications, which are listed below.
    The principal industrial application of ceria is for polishing, especially chemical-mechanical planarization (CMP). For this purpose, it … See more

    Safety aspects

    Cerium oxide nanoparticles (nanoceria) have been investigated for their antibacterial and antioxidant activity.
    Nanoceria is a prospective replacement of zinc oxide and titanium dioxide in sunscreens, as it has lo… See more

    Wikipedia text under CC-BY-SA license
    Table of Contents
    Production
    Characteristics
    Quick Facts
    Structure and defect behavior
    Natural occurrence
    Applications
    Safety aspects
     
  2. Some results have been removed