Yttrium(III) phosphate
{{Chembox
| ImageFile = YPO4.png
| ImageSize =
| IUPACName = Yttrium phosphate
| OtherNames =
|Section1={{Chembox Identifiers
| CASNo = 13990-54-0
| PubChem = 10313406
| ChemSpiderID = 8488871
| EC_number = 237-790-3
| SMILES = [O-]P(=O)([O-])[O-].[Y+3]
| InChI = 1/H3O4P.Y/c1-5(2,3)4;/h(H3,1,2,3,4);/q;+3/p-3
| InChIKey = UXBZSSBXGPYSIL-DFZHHIFOAS
| StdInChI = 1S/H3O4P.Y/c1-5(2,3)4;/h(H3,1,2,3,4);/q;+3/p-3
| StdInChIKey = UXBZSSBXGPYSIL-UHFFFAOYSA-K
}}
|Section2={{Chembox Properties
| Formula = YPO4
| MolarMass = 183.877
| Appearance =
| Density =
| MeltingPt =
| BoilingPt =
| Solubility =
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|Section3={{Chembox Hazards
| MainHazards =
| FlashPt =
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Image:Xenotímio1.jpeg (YPO4)]]
Yttrium phosphate, YPO4, is the phosphate salt of yttrium.{{Greenwood&Earnshaw2nd|page=526}} It occurs in nature as minerals xenotime{{Cite book |last1=Macintyre |first1=Jane Elizabeth |title=Dictionary of inorganic compounds |last2=Daniel |first2=F. M. |last3=Stirling |first3=V. M. |date=1992 |publisher=Chapman & Hall |isbn=978-0-412-30120-9 |location=London Glasgow New York [etc.]}} and weinschenkite.minsocam.org: [http://www.minsocam.org/ammin/AM29/AM29_92.pdf WEINSCHENKITE, YTTRIUM PHOSPHATE DIHYDRATE], retrieved 16 May 2014
Preparation
Yttrium phosphate can be obtained by reacting yttrium chloride and sodium phosphate, or by reacting yttrium nitrate and diammonium hydrogen phosphate in solution:
:{{Chem2|YCl3 + (NH4)3PO4 → YPO4 ↓ + 3 NH4Cl}}
:{{Chem2|Y(NO3)3 + (NH4)2HPO4 → YPO4 ↓ + 2 NH4NO3 + HNO3}}
Yttrium phosphate can also be prepared by the reaction of yttrium(III) oxide and diammonium hydrogen phosphate:Georg Brauer: Handbuch der Präparativen Anorganischen Chemie. 3., umgearb. Auflage. Band I. Enke, Stuttgart 1975, ISBN 3-432-02328-6, S. 1114.
:{{Chem2|Y2O3 + 2 (NH4)2HPO4 → YPO4 + 2 NH3 + 3 H2O}}
Yttrium chloride and phosphoric acid are mixed at 35~40°C, and then ammonia solution is added dropwise to react:{{cite book| author = | chapter = | chapter-url = | format = | url = | title = Руководство по неорганическому синтезу: В 6-ти т. | orig-year = | editor = Ред. Брауэр Г. | edition = |location= М. |date = 1985 |publisher= Мир |at= |volume= 4 | pages = | page = | series = | isbn = }}
:{{Chem2|YCl3 + H3PO4 + 3NH3•H2O}} {{su|b=→|p=35-40°C}} {{Chem2|YPO4 + 3NH4Cl + 3H2O }}
Properties
Yttrium phosphate belongs to the tetragonal crystal system, and the unit cell parameters are a=0.68832 nm, c=0.60208 nm. It can exist as a monohydrate, dihydrate or the anhydrous form. The dihydrate belongs to the monoclinic crystal system, the space group is B 2/b, and the unit cell parameters are a=0.648 nm, b=1.512 nm, c=0.628 nm, β=129.4°, Z=4.{{cite book| author = | chapter = | chapter-url = | format = | url = | title = Справочник химика | orig-year = | editor = Редкол.: Никольский Б.П. и др. | edition = 2-е изд., испр |location= М.-Л. |date = 1966 |publisher= Химия |at= |volume= 1 | pages = | page = | series = | isbn = }}
Yttrium phosphate reacts with concentrated alkali to form yttrium hydroxide.{{Cite book |last1=Yi |first1=Xianwu |title=Kang |last2=Huang |first2=Chunhui |date=2011 |publisher=Ke xue chu ban she |isbn=978-7-03-030574-9 |edition=Di san ci yin shua |series=Wu ji hua xue cong shu |location=Bei jing}}
Uses
Yttrium phosphate is used as a catalyst and is a potential containment material for nuclear waste. Ce3+-doped yttrium phosphate shows luminescence in the UV range and can be used for tanning lamps.{{Cite book |last=Alsfasser |first=Ralf |url=https://books.google.com/books?id=HwY4be5bH_sC&pg=PA318 |title=Moderne anorganische Chemie: mit CD-ROM |date=2007 |publisher=de Gruyter |isbn=978-3-11-019060-1 |language=de}}{{Cite web |title=铈激活磷酸钇发光材料_爱学术 |url=https://www.ixueshu.com/document/66a4b6e64603bc3697507f7cd6ff1242318947a18e7f9386.html |access-date=2023-06-21 |website=www.ixueshu.com}} Double-doped materials such as Ce3+-Tb3+ have also been reported.
References
{{Reflist}}
{{Yttrium compounds}}
{{Phosphates}}
{{DEFAULTSORT:Yttrium Phosphate}}