杂多化合物研究——Ⅱ.钼锑磷杂多化合物的合成和性质研究  

Studeis on the Heteropoly Compounds Ⅱ.Synthesis and Properties of Molybdostibopho sphoric

作　　者：黄闻新[1] 林惠文[1] 奚干卿[2] 

机构地区：[1]海南师院 [2]海南大学

出　　处：《海南大学学报（自然科学版）》1991年第1期51-57,共7页Natural Science Journal of Hainan University

基　　金：海南省自然科学基金

摘　　要：本实验以简单酸铵盐为原料,采用不同的磷钼锑比,在控制酸度、温度的条件下,进行分步反应的方法,合成了以锑原子取代的钼锑磷杂多酸铵盐,并用稀酸溶液、乙醇溶液蒸发结晶。又以钼锑磷杂多酸铵盐为原料,用离子交换、真空抽吸等提纯方法,制得了相应的固体钼锑磷杂多酸。通过元素分析,确定了它们的组成;用滴定曲线、电子吸收光谱、X 射线衍射等方法初步地研究了它们的性质。By the method of adding raw materal stepwise,the ammonium salts of molybdostibophosphorie acid with stibium atoms were prepared as crystalline solid,under eomtrolling temperature of reaction about 70—80℃ and acidity about 3.ON,with diluent acidic solution and ethanol solution evaporated to yield crystals.By the way of ion-exchange,corresponding free acids have been obtained first time with the ammonium salts of molybdostibophosphoric acids as raw material.Using the method of elemental analysis,their com- position have been determined as geen(NH_4)_6(PM_(011)SbO_(40))·11H_2O, yellow(NH_4)_6(PM_(09)Sb_3O_(40))·14H_2O,blue(NH_4)_3(PM_(09)Sb_2O_(30))·21 H_2O. The properties of molybdostibo phosphoric compounds were investigated. The PH titration curve of various molybdostibophosphoric acids have been determined in the aqueous solution with NaOH as titrant.Also,the visible electronic absorption spectra,X—Ray diffraction were studied.These com- pounds seems to have the keggin structure.

关 键 词：杂多化合物 钼 锑 磷 杂多酸铵盐 

分 类 号：O641.4[理学—物理化学]