Anderson结构稀土钼铬多金属氧酸盐的合成与表征  

Synthesis and Characterization of Rare Earth Elements SubstitutedChromium Molybdates of the Anderson Type

作　　者：郭元茹[1] 周百斌[1] 马慧媛[1] 徐学勤[1] 韦永德[2] 

机构地区：[1]哈尔滨师范大学化学系,哈尔滨150080 [2]哈尔滨工业大学应用化学系,哈尔滨150001

出　　处：《无机化学学报》2003年第2期183-186,共4页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金资助项目(No.29671009)

摘　　要：A new kind of Anderson type chromium molybdates containing the rare earth elements are synthesized, which have the general molecular formula of (NH4)6[CrMo5Ln(OH2)2O24H6]·xH2O (Ln=La,Ce,Pr,Nd,Sm,Gd and Yb). The components of theseheteropoly complexes are determined by chemical elemental analysis, ICP and TG DTA. And IR, UV, ESR,XPS and 1H NMR are also applied to characterize the complexes as well. The results indicate that the structures of these complexes are Anderson B type and the rare earth elements are in the inner sphere of the heteropoly salts. The thermal stabilities of these complexes studied by TG DTA show that the range of pyrolysis temperature is between 490℃and 500℃.A new kind of Anderson-type chromium-molybdates containing the rare earth elements are synthesized, which have the general molecular formula of (NH4) (6)[CrMo(5)Ln(OH2)(2)O24H6] (.) xH(2)O Mn = La, Ce, Pr, Nd, Sm, Gd and Yb). The components of these heteropoly complexes are determined by chemical elemental analysis, ICP and TG-DTA. And IR, UV, ESR, XPS and H-1 NMR are also applied to characterize the complexes as well. The results indicate that the structures of these complexes are Anderson B type and the rare earth elements are in the inner sphere of the heteropoly salts. The thermal stabilities of these complexes studied by TG-DTA show that the range of pyrolysis temperature is between 490degreesC and 500degreesC.

关 键 词：稀土 钼铬多金属氧酸盐 合成 表征 ANDERSON结构 

分 类 号：O614.33[理学—无机化学] O641.4[理学—化学]