摘要
合成了三个碱金属，二个碱土金属的钼钒砷三元杂多酸盐。经IR、TG-DTA、pH电位滴定等手段表征，确定钾盐、铷盐、铯盐具有Keggin结构，并推断其组成分别为K4[AsVMo11O40]·H2O、H2Rb2[AsVMo11O40]·9H2O和H3Cs[AsVMo11O40]·10H2O。锶盐和钡盐不具有Keggin结构。五种盐皆不溶于水，其中锶盐和钡盐还不溶于稀酸和稀碱。
Five new salts of molybdovanadoarsenic acid were synthesized and characterized by IR spectra, differential thermal analysis and thermogravimetry and pH potentiometric titration. Their IR spectra revealed that potassium. rubidium and cesium salts had keggin structure, but strontium and barium salts had not. The composition of potassium, rubidium and cesium salts were inferred by pH potentiometric titration and heat losed weight, which are K4[AsVMo11O40]·H2O, H2Rb2[AsVMo11O40]·9H2O, H3Cs[AsVMo11O40]·10H2O respectively. Five salts did not dissolve in water and strontium.Barium salts dissoved neither thin acid nor thin base.
出处
《湘潭师范学院学报（社会科学版）》
2000年第6期3-6,共4页
Journal of Xiangtan Normal University(Social Science Edition)
基金
湖南省教委资助!(99C227)
关键词
合成
钼钒砷杂多酸
碱金属
碱土金属
表征
synthesis
molybdovanadoarsenic Heteropolyacid
alkali metal
alkaline-earth metal
