水合二氧化钛-磷钼酸铵微球复合无机离子交换剂的结构与性能  

STRUCTURE AND PROPERTIES OF HYDRATED TITANIUM DIOXIDE-AMMONIUM MOLYBDOPHOSPHATE SPHERICAL COMPLEX INORGANIC ION EXCHANGER

作　　者：臧春梅[1] 储昭升[1] 孙兆祥[1] 

机构地区：[1]北京师范大学化学系,北京100875

出　　处：《北京师范大学学报（自然科学版）》2000年第1期89-93,共5页Journal of Beijing Normal University(Natural Science)

基　　金：国家自然科学基金资助项目!(5 95 72 0 2 4)

摘　　要：水合二氧化钛磷钼酸铵 (HTO AMP)球形复合无机离子交换剂在一定条件下具有对Cs+ 和Sr2 + 同时交换的性能 .从对复合交换剂组成分析看 ,有一部分基体二氧化钛在复合过程中转变为磷酸钛 ;结构分析表明 ,复合交换剂很稳定 ,与HTO和AMP的混合样品存在很大差异 ,在复合材料中可能形成新化学键Ti—O—Mo键 .将HTO AMP和磷酸钛磷钼酸铵 (TiPAMP)对Cs+ 的交换性能作了比较 ,发现前者的交换速率快 ,后者的交换容量则更大 ,但洗脱效果不如前者 .Spherical hydrated titanium dioxide ammonium molybdophosphate(HTO AMP) can adsorb Cs + and Sr 2+ simultaneously in definite conditions. Composition analysis shows that part of HTO changes into titanium phosphate(TiP). Structure analysis proves the complex exchanger is very stable and different from the mixed sample (HTO+AMP). Ti—O—Mo new chemical bond may form in complex materials. By comparing exchange properties of HTO AMP and TiP AMP, it is found that TiP AMP has the higher exchange capacity for Cs + and HTO AMP has higher ion exchange rate and spherical appearance.

关 键 词：水合二氧化钛-磷钼酸铵 无机离子交换剂 

分 类 号：O647.316.2[理学—物理化学]