摘要
采用大角度Χ射线衍射技术和径向分布函数法,对焦磷钨酸锡(SWPP)的结构进行了分析,获得有关SWPP的结构信息。结果表明,交换剂的主链是焦磷酸链,杂原子W的引入有利于提高交换剂的化学稳定性。在广泛试验的基础上,提出SWPP的结构模型。根据这一模型较好地解释了SWPP离子交换反应的一些基本特征。
The structure of an amorphous inorganic ion exchanger--Stannic tungsto- pyrophosphate (SWPP) is postulated with radial distribution function (RDF) by X-ray diffracticn, The results show that the main chain of the SWPP is pyrophosphate, and the presence of tungsten in the SWPP is favourable for improvement the chemical stabilities of the SWPP. The structural model of the exchenger is sugested, and the ion exchange characteristic of the exchanger is explained in accordance with this structural model.
出处
《武汉大学学报（自然科学版）》
CSCD
1992年第3期63-68,共6页
Journal of Wuhan University(Natural Science Edition)
关键词
无机
离子交换剂
结构分析
SWPP
磷
inorganic icn exchanger
stannic tungstopyrophosphate
radial distribution function
