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用分步法制备出高纯度、高产率的混配型钼钨磷杂多酸H_3PMo_6W_6O_(40)·xH_2O晶体,并合成出4种通式为Ln[PMo_6W_6O_(40)]·xH_2O(Ln=La,Ce,Pr,Nd)钼钨混配型稀土杂多酸盐及ZnHPMo_6W_6O_(40)·xH_2O杂多酸盐。
The high-purity and high-yield mixed heteropoly molybdotungstophosphoric acid H_3PMo_6W_6O_ (40) · xH_2O crystals were prepared by a fractional step method and four kinds of crystals of general formula Ln [PMo_6W_6O_ (40)] xH_2O (Ln = La , Ce, Pr, Nd) molybdenum and tungsten mixed rare earth heteropoly acid salt and ZnHPMo_6W_6O_ (40) · xH_2O heteropoly acid salt.