metatungstate ????????? ?? ???? ????? ???????? ?????? ??????? ????? ????? ?? ????? ??????? ???????? ??????? ?????? ???? ???. ?? ?????? ?????? ??????? ??????? ???????? ????????????? ?????? ?? ????????? ???????? metatungstate ????????? ?? ????? ???? ???. ?? ???? ??????? ???????? ???????? ??????? ??????????? ????????? ????? ???? ??????? ????? ??????? ?????? metatungstate ?????????. ??? ??????? ????? ?????? ???????? ??????? ????????? ???? ?? ?????? ????? ??? ????? ?? ??? ??????? ?????? ??????? ????????.

????? ?????? metatungstate ????????? ???????? ??????????? ????????? ???? ???? ?????? ?????: (A) ????? ??????????? ????????? ????? ?? ??? ???????? ?????? ??? ????? ???? ?? metatungstate ?????????. (B) ????? ????? ???? ?? metatungstate ????????? ????? ????? metatungstate ?????????. ? (C) ?? ????? metatungstate ????????? ????? ???? ?????? ??? ????? ?? metatungstate ?????????.

?. ?????? ??????????? ????????? ??????: ???? ????? ????? ??? ??????? ????? ????? ???????. ??????????? ????????? ?????? [5 (NH4) 2O12WO35H2O] ???? ???? ??? ????? ????? ????? 150-200 ?? / ???? ?? ???????. ??? ????? ??????????? ????????? ?????? 1: ???? 3 ???? ??? ???????? (HNO3) ???? ??????? ??? ???? ?? ???? ??????? 3-5. ?? ????? ??????? ???????? ????? ????? ???? ????? WO3 ?? ???? ??? 150 ???? / ???. ??? ??????? ????? ????? ???? ??? ????? ????? ?????? ???? ??? ??? ???? ??? ??????? ???????? ?? ??? ????? ????? ???? ?? metatungstate ?????????.

?. ????? ????? ????? ???? ?? metatungstate ????????? ??? ????? metatungstate ?????????: ?? ????? ???? ?? metatungstate ????????? ?? ?????? A ??? ????? ???? 4 ?????? ????? ??????? ??????? ?? ?????? ????? ?????? ??? ??????? 1? ??? ?? ??????? ????? 1 ??? ????? ?? ??? ???? ??????? ??? ??????? ????? ?? ?? ??? ??? ?? ??????? 1? ??? ???? ???????? (NH3H2O) ?? 1: 5 ?????? ???? ???? ?? ???? ??????? 3-4. ????? ????? ??????? ??? 2? ?? ????? ???? ?? ?????? 1 ??? 1 ???? ?? ???????? ???? ?????? ?????? ?? ???? ???? ??? ???????? ??????? ????? ?????? ??? ??????? 2? ??? ?? ??????? ????? 2 ??? ???? ???????? ??????? ????? ???? 8 ?????? ?? ???? ?????? ?????? ?? ???? ???? ??? ???????? ??????? tertiarily ?????? ??? ????? metatungstate ?????????.

???? ????? metatungstate ????????? ?? ?????? B ??? ???? ?????? ?? metatungstate ????????? ?? ???? ??????? ????? ????? ????? ?????? ????? ??????? ????? ???? ??????? ???????? ?? ??????? ????: ?. ??????? ????? ?? ????? ???? ?? metatungstate ????????? ????. ??? ?????? ?? ???? ??????? ????? ??: ???? ???? ????? ?????? 220-280 ???? ?????? ????? ??????? ???? ?????? 110-160 ???? ?????? ????? ??????? 300-400 ??? / ????.