Yttrium(III) phosphate

Yttrium(III) phosphate

Names
IUPAC name Yttrium phosphate
Identifiers
CAS Number	13990-54-0
3D model (JSmol)	Interactive image
ChemSpider	8488871
ECHA InfoCard	100.034.341
EC Number	237-790-3
PubChem CID	10313406
CompTox Dashboard (EPA)	DTXSID80884522
InChI InChI=1S/H3O4P.Y/c1-5(2,3)4;/h(H3,1,2,3,4);/q;+3/p-3 Key: UXBZSSBXGPYSIL-UHFFFAOYSA-K InChI=1/H3O4P.Y/c1-5(2,3)4;/h(H3,1,2,3,4);/q;+3/p-3 Key: UXBZSSBXGPYSIL-DFZHHIFOAS
SMILES [O-]P(=O)([O-])[O-].[Y+3]
Properties
Chemical formula	YPO4
Molar mass	183.877
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

A sample of the mineral xenotime (YPO₄)

Yttrium phosphate, YPO₄, is the phosphate salt of yttrium. ^[1] It occurs in nature as minerals xenotime ^[2] and weinschenkite. ^[3]

Preparation

Yttrium phosphate can be obtained by reacting yttrium chloride and sodium phosphate, or by reacting yttrium nitrate and diammonium hydrogen phosphate in solution: ^[2]

${\displaystyle \mathrm {YCl_{3}+(NH_{4})_{3}PO_{4}\longrightarrow YPO_{4}\downarrow +3\ NH_{4}Cl} }$

${\displaystyle \mathrm {Y(NO_{3})_{3}+(NH_{4})_{2}HPO_{4}\longrightarrow YPO_{4}\downarrow \ +2\ NH_{4}NO_{3}+HNO_{3}} }$

Yttrium phosphate can also be prepared by the reaction of yttrium(III) oxide and diammonium hydrogen phosphate: ^[4]

${\displaystyle \mathrm {Y_{2}O_{3}+2\ (NH_{4})_{2}HPO_{4}\longrightarrow YPO_{4}+2\ NH_{3}+3\ H_{2}O} }$

Yttrium chloride and phosphoric acid are mixed at 35~40°C, and then ammonia solution is added dropwise to react: ^[5]

${\displaystyle \mathrm {YCl_{3}+H_{3}PO_{4}+3NH_{3}\cdot H_{2}O\ {\xrightarrow {35-40^{o}C}}\ YPO_{4}+3NH_{4}Cl+3H_{2}O} }$

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. ^[6]

Yttrium phosphate reacts with concentrated alkali to form yttrium hydroxide. ^[7]

Uses

Yttrium phosphate is used as a catalyst and is a potential containment material for nuclear waste. ^[2] Ce³⁺-doped yttrium phosphate shows luminescence in the UV range and can be used for tanning lamps. ^{[8] [9]} Double-doped materials such as Ce³⁺-Tb³⁺ have also been reported.

References

1. Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 526. ISBN   978-0-08-037941-8.
2. Macintyre, Jane Elizabeth; Daniel, F. M.; Stirling, V. M. (1992). Dictionary of inorganic compounds. London Glasgow New York [etc.]: Chapman & Hall. ISBN   978-0-412-30120-9.
3. minsocam.org: WEINSCHENKITE, YTTRIUM PHOSPHATE DIHYDRATE, retrieved 16 May 2014
4. Georg Brauer: Handbuch der Präparativen Anorganischen Chemie. 3., umgearb. Auflage. Band I. Enke, Stuttgart 1975, ISBN 3-432-02328-6, S. 1114.
5. Руководство по неорганическому синтезу: В 6-ти т. Vol. 4. М.: Мир. Ред. Брауэр Г. 1985.
6. Справочник химика. Vol. 1 (2-е изд., испр ed.). М.-Л.: Химия. Редкол.: Никольский Б.П. и др. 1966.
7. Yi, Xianwu; Huang, Chunhui (2011). Kang. Wu ji hua xue cong shu (Di san ci yin shua ed.). Bei jing: Ke xue chu ban she. ISBN   978-7-03-030574-9.
8. Alsfasser, Ralf (2007). Moderne anorganische Chemie: mit CD-ROM (in German). de Gruyter. ISBN   978-3-11-019060-1.
9. "铈激活磷酸钇发光材料_爱学术". www.ixueshu.com. Retrieved 2023-06-21.