钨酸镧
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
钨酸镧可由氧化镧 和三氧化钨 在1100℃反应得到:[5]
La2 O3 + 3 WO3 → La2 (WO4 )3
参见
参考文献
^ 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
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