稀土学报(英文版)
稀土學報(英文版)
희토학보(영문판)
JOURNAL OF RARE EARTHS
2002年
6期
596-601
,共6页
周百斌%韦永德%马慧媛%王玉和%单永奎
週百斌%韋永德%馬慧媛%王玉和%單永奎
주백빈%위영덕%마혜원%왕옥화%단영규
rare earths%molybdotungstovanadophosphoric heteropoly complexes%Keggin structure%actalytic cativity
Seven new-type pentabasic heteropoly complexes with the general molecular formula K10H5[Ln(PMo5W4V2O39)2]*nH2O(Ln=La, Ce, Pr, Nd, Eu, Gd, Dy) were synthesized. The results of IR, UV, 31P, 51V NMR and X-ray powder diffraction pattern demonstrate that the product still maintains Keggin structure. The thermal stability studied by water solubility test, TG-DTA, XRD and IR at various temperature shows that the range of pyrolysis temperature is from 500～550 ℃. The catalytic action varies according to the contents of rare earths which are used to catalyze the decomposition of hydrogen peroxide.
