钨酸镧：修订间差异
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| Name = 钨酸镧 |
| Name = 钨酸镧 |
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| Appearance = 无色晶体 |
| Appearance = 无色晶体 |
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| Density = 6.60 g·cm<sup>-3</sup><ref>D. Gras, F. Schröder, and S. Waschk, Gmelins’Handbook of Inorganic Chemistry, 8th ed., Tungstate, Suppl. B5, 1984</ref><br>6.63 g·cm<sup>−3</sup><ref>{{cite journal|journal=Ceramics International|volume=38|issue=4|language=en|date=2012-05|pages=2951–2956|doi=10.1016/j.ceramint.2011.11.072|url=https://linkinghub.elsevier.com/retrieve/pii/S027288421101042X|title=Synthesis and negative thermal expansion properties of solid solutions Yb2−xLaxW3O12 (0≤x≤2)|accessdate=2020-01-18|author=Hongfei Liu, Wei Zhang, Zhiping Zhang, Xiaobing Chen}}</ref> |
| Density = 6.60 g·cm<sup>-3</sup><ref>D. Gras, F. Schröder, and S. Waschk, Gmelins’Handbook of Inorganic Chemistry, 8th ed., Tungstate, Suppl. B5, 1984</ref><br>6.63 g·cm<sup>−3</sup><ref>{{cite journal|journal=Ceramics International|volume=38|issue=4|language=en|date=2012-05|pages=2951–2956|doi=10.1016/j.ceramint.2011.11.072|url=https://linkinghub.elsevier.com/retrieve/pii/S027288421101042X|title=Synthesis and negative thermal expansion properties of solid solutions Yb2−xLaxW3O12 (0≤x≤2)|accessdate=2020-01-18|author=Hongfei Liu, Wei Zhang, Zhiping Zhang, Xiaobing Chen|archive-date=2018-06-29|archive-url=https://web.archive.org/web/20180629092558/https://linkinghub.elsevier.com/retrieve/pii/S027288421101042X|dead-url=no}}</ref> |
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| ⚫ | '''钨酸镧'''是一种[[无机化合物]]，属于稀土[[钨酸盐]]，[[化学式]]为La<sub>2</sub>(WO<sub>4</sub>)<sub>3</sub>。它是单斜晶系晶体，空间群C2/c，晶胞参数a=7.871, b=11.837, c=11.686 A。<ref>{{cite journal|journal=Solid State Sciences|volume=6|issue=12|language=en|date=2004-12|pages=1313–1319|doi=10.1016/j.solidstatesciences.2004.07.023|url=https://linkinghub.elsevier.com/retrieve/pii/S1293255804002353|title=Role of crystal structure on the thermal expansion of Ln2W3O12 (Ln = La, Nd, Dy, Y, Er and Yb)|accessdate=2020-01-18|author=S. Sumithra, A.M. Umarji|archive-date=2018-06-28|archive-url=https://web.archive.org/web/20180628235736/https://linkinghub.elsevier.com/retrieve/pii/S1293255804002353|dead-url=no}}</ref>白色，无定型固体，难溶于水。<ref>{{cite book |author1=马世昌 |title=化学物质辞典 |date=1999.04 |publisher=陕西科学技术出版社 |location=西安 |isbn=7-5369-2982-X |page=517}}</ref> |
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| ⚫ | '''钨酸镧'''是一种[[无机化合物]]，[[化学式]]为La<sub>2</sub>(WO<sub>4</sub>)<sub>3</sub>。它是单斜晶系晶体，空间群C2/c，晶胞参数a=7.871, b=11.837, c=11.686 A。<ref>{{cite journal|journal=Solid State Sciences|volume=6|issue=12|language=en|date=2004-12|pages=1313–1319|doi=10.1016/j.solidstatesciences.2004.07.023|url=https://linkinghub.elsevier.com/retrieve/pii/S1293255804002353|title=Role of crystal structure on the thermal expansion of Ln2W3O12 (Ln = La, Nd, Dy, Y, Er and Yb)|accessdate=2020-01-18|author=S. Sumithra, A.M. Umarji}}</ref> |
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==制备== |
==制备== |
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: La<sub>2</sub>O<sub>3</sub> + 3 WO<sub>3</sub> → La<sub>2</sub>(WO<sub>4</sub>)<sub>3</sub> |
: La<sub>2</sub>O<sub>3</sub> + 3 WO<sub>3</sub> → La<sub>2</sub>(WO<sub>4</sub>)<sub>3</sub> |
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==参见== |
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* [[钨酸]] |
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==参考文献== |
==参考文献== |
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2022年7月22日 (五) 06:37的最新版本
| 钨酸镧 | ||
|---|---|---|
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| 识别 | ||
| CAS号 | 13939-41-8 
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| 性质 | ||
| 化学式 | La2(WO4)3 | |
| 摩尔质量 | 1021.33 g·mol⁻¹ | |
| 外观 | 无色晶体 | |
| 密度 | 6.60 g·cm-3[1] 6.63 g·cm−3[2] | |
| 若非注明，所有数据均出自标准状态（25 ℃，100 kPa）下。 | ||
钨酸镧是一种无机化合物，属于稀土钨酸盐，化学式为La2(WO4)3。它是单斜晶系晶体，空间群C2/c，晶胞参数a=7.871, b=11.837, c=11.686 A。[3]白色，无定型固体，难溶于水。[4]
制备
[编辑]- La2O3 + 3 WO3 → La2(WO4)3
参见
[编辑]参考文献
[编辑]- ^ D. Gras, F. Schröder, and S. Waschk, Gmelins’Handbook of Inorganic Chemistry, 8th ed., Tungstate, Suppl. B5, 1984
- ^ Hongfei Liu, Wei Zhang, Zhiping Zhang, Xiaobing Chen. Synthesis and negative thermal expansion properties of solid solutions Yb2−xLaxW3O12 (0≤x≤2). Ceramics International. 2012-05, 38 (4): 2951–2956 [2020-01-18]. doi:10.1016/j.ceramint.2011.11.072. （原始内容存档于2018-06-29） （英语）.
- ^ S. Sumithra, A.M. Umarji. Role of crystal structure on the thermal expansion of Ln2W3O12 (Ln = La, Nd, Dy, Y, Er and Yb). Solid State Sciences. 2004-12, 6 (12): 1313–1319 [2020-01-18]. doi:10.1016/j.solidstatesciences.2004.07.023. （原始内容存档于2018-06-28） （英语）.
- ^ 马世昌. 化学物质辞典. 西安: 陕西科学技术出版社. 1999.04: 517. ISBN 7-5369-2982-X.
- ^ Melitta Gärtner, Dirk Abeln, Allan Pring, et al. Synthesis, Structure, and Reactivity of Novel Lanthanum Tungstates. Journal of Solid State Chemistry, 1994. Vol.111, Iss.1: 128-133