metatungstate ????????? ???? (AMT) ???? ????? ??? ????? ???? ???? ?? metatungstate ????????? ?? ????? ?????? ?????? ???? ???? ???? ????????. ??? metatungstate ????????? ???? ?????????? ?????? ????? ???????? ???? ??????????? ???????? ???? ?? ?????? ?????? ????? ???? ????????. ??????? ???? AMT ?????? ????? ???????? ???? ???????.

??? ????? ??????? metatungstate ??????? ???????? ????????? ?????? ????? ???????? ????? ???? metatungstate ????????? ???? ??? ????? ???? ???????? ??????? ???? ?????? ??????? ?????? ????? 0.1 ~ 5wt?? ?????? ??? ???? ??? ????? ????? ???? ??? ?? ???????? ??????? ????? ??????? ????? ???? ???? ?? ??????? ???? ?? ????? ?? ??? ????? ?????? ?? ?? ?????? 580 ~ 620 ℃ ???????? ????? 2 ~ 3H? ???? ?????? ???????? ????? ????? ????????. ???? ?????? ????? ????? ???????? ?? ?? ????? ?????? ?? ?? ?????? ??????????? 5 ℃ / ????? ???????? ????? ??????? ???? ?? 780 ~ 820 ℃? ????? 3 ~ 4H? ???? ???? ????? ????????.