Anhydrous samarium chloride and preparation method thereof

The invention provides anhydrous samarium chloride and a preparation method thereof. The method comprises the steps: removing the crystal water in samarium chloride hydrate under the vacuum condition; enabling the anhydrous samarium chloride to react with metal M, and obtaining the anhydrous samarium chloride extremely high in absolute purity through the impurity removal and vacuum distillation process. The impurity removal and distillation processes are carried out in a high vacuum environment, so water and oxygen are strictly isolated, and the product is prevented from being polluted; in addition, the technological process is short, operation is easy, and industrial production is easy. 本发明创造提供了一种无水氯化亚钐及其制备方法，所述方法首先在真空条件下脱去水合氯化钐中的结晶水，然后将无水氯化钐与金属M反应，并经过除杂及真空蒸馏过程，得到绝对纯度极高的无水氯化亚钐。除杂及蒸馏过程中在高真空环境中进行，严格隔绝了水和氧，避免产品被污染；此外工艺流程较短，操作简便，易于工业化生产。