杂多化合物研究 Ⅳ.钼钒磷杂多酸铵蓝的合成和性质  

Studies on the HeteropOly Compounds——Ⅳ.Syntheses and Properties of Ammonium Molybdovanadophosphate Blue

作　　者：黄闻新[1] 林惠文[1] 奚干卿[2] 

机构地区：[1]海南师范学院化学系 [2]海南大学

出　　处：《海南大学学报（自然科学版）》1993年第3期1-6,共6页Natural Science Journal of Hainan University

基　　金：This work was supported by Science Foundation of Hainan

摘　　要：本实验用分步反应的方法,以不同的磷钼钒比,直接合成了三种1∶12系列钼钒磷杂多酸铵蓝,并详细考察了它们的生成条件。通过元素分析和电位滴定,确定阴离子的组成分别为:H_2[PMo_2~ⅤMo_9~ⅥVO_(40)]^(4-),H_2[PMo_2~ⅤMo_8~ⅥV_2O_(40)]^(5-)和H_2[PMo_2~ⅤMo_7~ⅥV_3O_(40)]^(6-)。根据电子光谱和X射线粉末衍射结果研究了它们的性质和结构。Three specimens of ammonium molybdovanadophosphate blue have been synthesized by a method of stepwise adding raw materials in the different molar ratio of P—Mo—V. The effect of reactional condition on the formation of these ammonium molybdovanadophosphate blue has been studied. It was shown by means of the elemental analysis and potentiometric titration, that the constitutions of these heteropolyanions are H_2 [PMo_2~Ⅴ Mo_9~Ⅵ V_2O_(40)]^(4-), H_2[PMo_2~Ⅴ Mo_5~Ⅵ V_2O_(40)]^(5-) and H_2 [PMo_2~Ⅴ Mo_7~Ⅵ V_3O_(40)]^(6-). The electronic spectra and X—ray powder diffraction was also studied.

关 键 词：钒 杂多化合物 钼 磷 杂多酸 合成 

分 类 号：O641.4[理学—物理化学]