贫化水合醋酸锌-64合成研究

Study on the synthesis process of depleted zinc acetate-64

贫化水合醋酸锌-64作为核电反应堆冷却水回路添加剂,可有效减缓设备腐蚀并降低四周辐射。本研究以贫化二乙基锌-64为原料,通过醇化、酸化、水合结晶等工艺得到高纯度贫化醋酸锌-64产品。系统考察了有机醇种类和用量、酸化合成反应条件、结晶母液密度等因素对产品制备的影响,获得了高收率转化工艺和高纯度的贫化水合醋酸锌-64产品,产品收率最高达到96.7%,产品纯度最高为99.96%。通过X射线衍射、红外光谱、扫描电镜和热重分析等技术对产品进行了充分表征。本文的研究结果应用于贫化水合锌-64同位素产品的批量生产中,该技术也适用于用金属有机盐原料制备无机盐类同位素产品的过程。

Depleted zinc acetate(with the abundance of 64Zn<1%)can effectively mitigate corrosion of equipment and reduce ambient radiation as an additive in reactor cooling water circuit.In this study,depleted anhydrous zinc acetate was synthesized in one step from depleted diethyl zinc-64 through the process of alcoholization and acidification,and high purity depleted zinc-64 acetate was obtained by hydrocrystallization.The factors of the reaction system such as the type and amount of organic alcohols,synthesis reaction conditions and the crystallization liquor density were systematically investigated,and the synthesis technology with high yield for depleted zinc acetate was obtained.The product was fully characterized by X-ray diffraction,infrared spectroscopy,scanning electron microscopy and thermal gravimetric analyzer through analytical techniques.The highest yield of 96.7% and the highest purity of 99.96% can be achieved by selecting isopropyl alcohol as the intermediate,and depleted zinc acetate is obtained through hydrocrystallization.These research consequences are applied to the mass production of depleted zinc-64 products,and this technology is also applicable to the preparation of inorganic salt isotope products using metal organic salt raw materials.