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制备了仲钨酸钠Na（10）H2W（12）O（42）·27H2O，用X射线衍射、Raman光谱及化学分析进行了表征．热分析的研究表明：该化合物热分解过程包括六个步骤．其中前四步为脱水步骤，温度分别为331，353，403及588K左右，而失水数分别为10H2O，9H2O，5H2O及4H2O；第五步可能为中间产物的相转变，温度为691K左右，第六步生成Na2W2O7和Na2W4O（13）的混合物，温度为733K左右．前五步中每一步的产物在标题化合物馆和溶液的气相中平衡处理之后，又都能得到标题化合物．
Sodium paratungstate Na (10) H2W (12) O (42) · 27H2O was prepared and characterized by X-ray diffraction, Raman spectroscopy and chemical analysis. Thermal analysis of the study showed that: the compound thermal decomposition process includes six steps. The first four steps are the dehydration step, the temperatures are about 331, 353, 403 and 588K respectively, and the water loss numbers are 10H2O, 9H2O, 5H2O and 4H2O, respectively. The fifth step may be the phase transition of the intermediate product, the temperature is about 691K, The sixth step generates a mixture of Na2W2O7 and Na2W4O (13) at a temperature of about 733K. The product of each step of the first five steps gave the title compound after both the title compound and the gas phase of the solution were equilibrated.