【摘要】 <正> EuSO₄不同于一般的二价稀土化合物,对水、空气稳定,便于实用。已报道的EuSO₄制备均为湿法。EuS₄的干法合成的结果有助于考察湿法合成中水对EuSO₄的结构与性质的可能影响。 1 实验部分 1.1 仪器 LCT4-1型差热分析仪,Guinier-de-Wolff粉末X衍射相机;比长仪;IBM-PC计算机与粉末X衍射更多还原

【Abstract】 EuSO4 was prepared by a dry way reaction for the first time as follows:EuCl2 (s)+HgSO4(s) EuSO4(s)+HgCl2(g)Pure EuSO4 was obtained, orthorhombic barite structure (Prima, Z = 4), with α = 838.69± 0.15pm, b = 534.95 ± 0.09pm, c - 688.18±0.13pm. Atom positions of Eu,S and O were proposed, resulting in a set of calculated intensities coincided well with the observed.更多还原