Lanthanum Phosphotungstate

?? ????: 磷鎢酸鑭
?? ?????: Lanthanum Phosphotungstate
????? ?????: LaPW₁₂O₄₀

Lanthanum phosphotungstate ??? ????? ???? ???? ??????? heteropolyphosphatotungstate, ??? ??????? ?????? ???? ?? ??????? ?????. Lanthanum phosphotungstate ?? ????? ????? ?? ?? ????? heteropolyanion ??? ?? ??? ????? ??????? ?? ???? ??????. ???? ?? phanthhotungstate lanthanum ???? ??? ???? phosphotungstic ????? lanthanum ???? ??? ???? ????, ??? ???? metathesis ?? ????? ????? ?????, ???? lanthanum phosphotungstate ????? ?????? ????? ????? ???? ?????? ?????.

???? Lanthanum Phosphotungstate

1. ???? ???? ?????? ?? ????? phosphotungstic (PWA) ??????? ??? ??? ?????? ??? ????? ???? ???? ??? ????? ????? ???? ????;
2. ??????? ???? ?????? ?? ???? ????? ???? ?????? ?? 60 ~ 80 ℃ ???????? ????? 120 ???? ???? ?? reflux;
3. ??????? ??? ????? ??????? ???? ??? ???? ????????, ????? ??? ????? ????? ????????? ????, ?????? ??????, ??????? ??? ??? ???? LaPW₁₂O₄₀?nH₂O；
4. ????? ???? 2.0 ???? ??? ???????? ?? 150 ℃, ????? ??? ???? calcination ???? 3.0 ???? ? 300 ℃ ??? ????? phanthhotungstate lanthanum.

Lanthanum Phosphotungstate ??????

Lanthanum phosphhotungstate ??? ?? ?????? ??????? ????? ??????? ?? lanthanum acetal (????) ?????, ?? ??? ????? ???, ????? ????, ?????? ??? ??????? ??????, ?????? ?? ??? ???? ??? ???? ?????? ???????? ?? ???? ????? (????). ?????? ???? ?? ??? lanthanum phosphotungstate ???? ?? ?????? ?? ₂ O ₂ ???? cyclohexanone ?????? ????? ?????? ???? ?? ?????? ??????????, ?????? ?? ????? ?????? ??? 68.0% ?? ???? lanthanum Phosphotungstate ??????? ?????? ????? ??? ???? ????? ???? ??? ?????. ?????, ???? ????? lanthanum phosphotungstate calyzed ????? ?????? ???? ?? ?????? ?????? ??????????, ?????? ?? ????? ?????? ???? ?? 86.5%, ????? ???? 5 ?????, ?????? ?? ????? ?????? ????? ????? ?? 74.1%.

?? ?? ?? ???? ???? ?? ????? ?? lanthanum phosphotungstate, ??? ??? ????? ??????? ?????? ?????:
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