三聚氰胺磷钼钒酸盐的制备和离子交换性能的研究

STUDY OF SYNTHESIS AND PROPERTIES OF MELAMINE-PHOSPHO-MOLYDIC VANADATE AS INORGANIC ION EXCHANGER

一、前言 杂多酸盐是一种无机离子交换剂。文献[1—2]报道了三聚氰胺磷钼酸盐的制备和离子性能的研究。它对^(137)Cs有很高的离子交换容量,是颗粒状的结晶,适合柱分离操作,但淋洗效果和耐辐照性能较差。本文研究了三聚氰胺磷钼钒酸盐(MPMV)的制备方法与对^(137)Cs的离子交换性能,并和三聚氰胺磷钼酸(MMP)的离子交换性能作了对比,得到相应的实验结果。

This article described the synthesis methods and ion exchange behaviour of crystalline melamine-phosphomolybdic vanadate(MPMV). Extensive studies of this material have been carried out by X-ray, TG-DTA, IR and chemical analysis. Based on these analyses, the molecular composition and the parameter of unit cell of MPMV were determinated. Some ion exchange characteristics of the MPMV can be explained by these results. This material shows cation exchange behaviour with high ion exchange capacity of 0. 42 mmol/g for Cs from simulated solution.