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  2. Cerium compounds - Wikipedia

    en.wikipedia.org/wiki/Cerium_compounds

    Cerium forms all four trihalides CeX 3 (X = F, Cl, Br, I) usually by reaction of the oxides with the hydrogen halides. The anhydrous halides are pale-colored, paramagnetic, hygroscopic solids. Upon hydration, the trihalides convert to complexes containing aquo complexes [Ce(H 2 O) 8-9] 3+. Unlike most lanthanides, Ce forms a tetrafluoride, a ...

  3. Cerium - Wikipedia

    en.wikipedia.org/wiki/Cerium

    Cerium forms all four trihalides CeX 3 (X = F, Cl, Br, I) usually by reaction of the oxides with the hydrogen halides. The anhydrous halides are pale-colored, paramagnetic, hygroscopic solids. Upon hydration, the trihalides convert to complexes containing aquo complexes [Ce(H 2 O) 8-9] 3+. Unlike most lanthanides, Ce forms a tetrafluoride, a ...

  4. Cerium(IV) oxide - Wikipedia

    en.wikipedia.org/wiki/Cerium(IV)_oxide

    Cerium(IV) oxide occurs naturally as the mineral cerianite-(Ce). [16] [17] It is a rare example of tetravalent cerium mineral, the other examples being stetindite-(Ce) and dyrnaesite-(La). The "-(Ce)" suffix is known as Levinson modifier and is used to show which element dominates in a particular site in the structure. [18]

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  7. Cerium(III) oxide - Wikipedia

    en.wikipedia.org/wiki/Cerium(III)_oxide

    These applications exploit the facility of the Ce(III)/Ce(IV) redox couple. [2] It is used in catalytic converters ("three-way catalytic converter") for the minimisation of CO emissions in the exhaust gases from motor vehicles. When there is a shortage of oxygen, cerium(IV) oxide is oxidizes carbon monoxide to the benign dioxide: [3] [4]

  8. Cerium(IV) sulfate - Wikipedia

    en.wikipedia.org/wiki/Cerium(IV)_sulfate

    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. These salts are yellow to yellow/orange solids that are moderately soluble in water and dilute acids. Its neutral solutions slowly decompose, depositing the light yellow oxide CeO 2. Solutions of ceric sulfate have a ...

  9. Cerimetry - Wikipedia

    en.wikipedia.org/wiki/Cerimetry

    Cerimetry or cerimetric titration, also known as cerate oximetry, is a method of volumetric chemical analysis developed by Ion Atanasiu.It is a redox titration in which an iron(II)–1,10-phenanthroline complex color change indicates the end point.