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Praseodymium(III) oxalate is an inorganic compound, a salt of praseodymium metal and oxalic acid, with the chemical formula C6O12Pr2.[1] The compound forms light green crystals that are insoluble in water. It also forms crystalline hydrates.
Preparation
Praseodymium(III) oxalate can be prepared from the reaction of soluble praseodymium salts with oxalic acid:
Properties
Praseodymium(III) oxalate forms crystalline hydrates (light green crystals): Pr2(C2O4)3•10H2O. The crystalline hydrate decomposes stepwise when heated:[2][3]
![{\displaystyle {\mathsf {Pr_{2}(C_{2}O_{4})_{3}\cdot 10H_{2}O\ {\xrightarrow[{-H_{2}O}]{T}}\ Pr_{2}(C_{2}O_{4})_{3}\ {\xrightarrow {T}}\ Pr_{2}O(CO_{3})_{2}\ {\xrightarrow {T}}\ Pr_{2}O_{2}CO_{3}\ {\xrightarrow {800^{o}C}}\ Pr_{6}O_{11}}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/2c21f385e441049c8861a748efcc11d5787c2ed3)
Uses
Praseodymium(III) oxalate is used as an intermediate product in the synthesis of praseodymium. It is also applied to colour some glasses and enamels. If mixed with certain other materials, the compound paints glass intense yellow.[4]
References
- ^ "Praseodymium oxalate". National Institute of Standards and Technology. Retrieved 17 June 2021.
- ^ Hussein, Gamal A.M. (1994-06-01). "Formation of praseodymium oxide from the thermal decomposition of hydrated praseodymium acetate and oxalate". Journal of Analytical and Applied Pyrolysis. 29: 89–102. doi:10.1016/0165-2370(93)00782-I. Retrieved 17 June 2021.
- ^ Lv, Peng; Zhang, Liangjing; Koppala, Sivasankar; Chen, Kaihua; He, Yuan; Li, Shiwei; Yin, Shaohua (2020-09-01). "Decomposition Study of Praseodymium Oxalate as a Precursor for Praseodymium Oxide in the Microwave Field". ACS Omega. 5 (34): 21338–21344. doi:10.1021/acsomega.0c00505. PMC 7469113. PMID 32905250.
- ^ "Praseodymium Oxalate 99%-99.999% from Metall Rare Earth Limited". metall.com.cn. Retrieved 17 June 2021.
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