磷酸钛─磷钨酸铵的合成及性能研究  

STUDY ON SYNTHESIS AND CHARACTER OF COMPLEX INORGANIC ION EXCHANGER TITANIUM PHOSPHATE－AMMONIUM TUNGSTOPHOSPHATE

作　　者：余心田[1] 孙兆祥[1] 孙翔东 

机构地区：[1]北京师范大学化学系,100875

出　　处：《离子交换与吸附》1997年第3期239-243,共5页Ion Exchange and Adsorption

基　　金：国家自然科学基金

摘　　要：本文研究了磷酸钦─磷钨酸铵（TiP－AWP）的合成，离子交换性能及化学结构等方面的性质。实验结果表明，该交换剂对CS+具有很高的选择性和交换容量，在0．1mol／LNO3介质中，该交换剂对CS+的交换容量可达0．95mmol／g，在1AW模拟废液中，对Cs+离子仍保持较高的交换容量。动态研究表明，该物质交换、淋洗、再生后交换容量基本不变，结构完整，对于放射性核素的分离和提取具有重要的意义。另外，该交换剂具有良好的辐射和热稳定性。In this paper, complex inorganic ion－ exchanger Titanium Phosphate－Ammo nium Tungstophosphate (TiP－AWP) was synthesized．This material was investi gated by means of thermal analysis, infrared spectroscopy, X— ray diffraction and chemical analysis．This compound exhibits high exchange capacity and selectivity for Cs+, its exchange capacity is 0． 95 mmol/ g in the medium of 0．1mol/ L HNO3, and it is almost without change in the 1 AW imitated waste water． There is no change in exchange capacity and structure after several times of exchanging, elution and regeneration, which is important for separation and uptaking radio nuclides. Furthermore, this exchanger has good thermal and radioactive stability.

关 键 词：磷酸钛 磷钨酸铵 离子交换剂 铯 TiP-AWP 

分 类 号：O647.316.2[理学—物理化学] TL941.19[理学—化学]