Dysprosium halides, such as DyF3 and DyBr3, tend to take on a yellow color. Dysprosium oxide, also known as dysprosia, is a white powder that is highly magnetic, more so than iron oxide.[1]
Dysprosium combines with various non-metals at high temperatures to form binary compounds with varying composition and oxidation states +3 and sometimes +2, such as DyN, DyP, DyH2 and DyH3; DyS, DyS2, Dy2S3 and Dy5S7; DyB2, DyB4, DyB6 and DyB12, as well as Dy3C and Dy2C3.[2]
Dysprosium carbonate, Dy2(CO3)3, and dysprosium sulfate, Dy2(SO4)3, result from similar reactions.[3] Most dysprosium compounds are soluble in water, though dysprosium carbonate tetrahydrate (Dy2(CO3)3·4H2O) and dysprosium oxalate decahydrate (Dy2(C2O4)3·10H2O) are both insoluble in water.[4][5] Two of the most abundant dysprosium carbonates, Dy2(CO3)3·2–3H2O (similar to the mineral tengerite-(Y)), and DyCO3(OH) (similar to minerals kozoite-(La) and kozoite-(Nd), are known to form via a poorly ordered (amorphous) precursor phase with a formula of Dy2(CO3)3·4H2O. This amorphous precursor consists of highly hydrated spherical nanoparticles of 10–20 nm diameter that are exceptionally stable under dry treatment at ambient and high temperatures.[6]
References edit
- ^ Krebs, Robert E. (1998). "Dysprosium". The History and Use of our Earth's Chemical Elements. Greenwood Press. pp. 234–235. ISBN 978-0-313-30123-0.
- ^ Patnaik, Pradyot (2003). Handbook of Inorganic Chemical Compounds. McGraw-Hill. pp. 199–200. ISBN 978-0-07-049439-8.
- ^ Heiserman, David L. (1992). Exploring Chemical Elements and their Compounds. TAB Books. pp. 236–238. ISBN 978-0-8306-3018-9.
- ^ Perry, D. L. (1995). Handbook of Inorganic Compounds. CRC Press. pp. 152–154. ISBN 978-0-8493-8671-8.
- ^ Jantsch, G.; Ohl, A. (1911). "Zur Kenntnis der Verbindungen des Dysprosiums". Berichte der Deutschen Chemischen Gesellschaft. 44 (2): 1274–1280. doi:10.1002/cber.19110440215.
- ^ Vallina, B., Rodriguez-Blanco, J.D., Brown, A.P., Blanco, J.A. and Benning, L.G. (2013). "Amorphous dysprosium carbonate: characterization, stability and crystallization pathways". Journal of Nanoparticle Research. 15 (2): 1438. Bibcode:2013JNR....15.1438V. CiteSeerX 10.1.1.705.3019. doi:10.1007/s11051-013-1438-3. S2CID 95924050.
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