Abstract Zirconium phosphosilicate (ZPS) has been prepared by gelation route for its ion exchange applications. ZPS was characterised by X-ray diffraction technique (XRD), thermogravimetry (TG), scanning electron microscopy (SEM), Fourier transformed Infrared Spectrometry (FTIR) and surface area analysis. K+ ion exchange behaviour was studied by pH titration. The material was found to extract Pu selectively over U from different mineral acids. Pu sorption behaviour on ZPS packed column was also been carried out. The pore volume was evaluated as 0.1336 mL g−1. The FTIR revealed the presence of –OH and PO43− groups on the surface of the material, while the SEM image indicates the irregular morphology and size of the sorbent. Different isotherm model: Langmuir, Freundlich, Dubinin–Rodushkevich and Temkin were used to understand the nature of sorption, while Lagergren 1st order, Intraparticle diffusion and pseudo 2nd order kinetics were used for modelling sorption kinetics. Suitable elution method was used for quantitative stripping of plutonium from sorbent. The radiolytic stability of the sorbent was evaluated upto 1500 kGy. A comparative evaluation of the sorption process has also been carried out with that reported in literature.

中文翻译：

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了解Pu/U在凝胶法制备的磷硅酸锆上的吸附行为

摘要 磷硅酸锆（ZPS）已通过凝胶化途径制备用于其离子交换应用。ZPS通过X射线衍射技术(XRD)、热重(TG)、扫描电子显微镜(SEM)、傅里叶变换红外光谱(FTIR)和表面积分析来表征。通过 pH 滴定研究 K+ 离子交换行为。发现该材料从不同的无机酸中选择性地提取 Pu 而不是 U。还进行了 ZPS 填充柱的吸附行为。孔体积评估为 0.1336 mL g-1。FTIR 显示材料表面存在 –OH 和 PO43- 基团，而 SEM 图像显示吸附剂的不规则形态和尺寸。不同的等温线模型：Langmuir、Freundlich、Dubinin-Rodushkevich 和 Temkin 用于理解吸附的性质，而拉格伦一阶、粒子内扩散和伪二阶动力学用于模拟吸附动力学。使用合适的洗脱方法从吸附剂中定量汽提钚。吸附剂的辐射稳定性评估高达 1500 kGy。吸附过程的比较评价也已与文献报道的评价进行了比较。