摘要
采用溶解平衡法研究了(NH_4)_2HPO_4-NH_3·H_2O-H_2O系APT的溶解性能。随着氨水浓度增大,APT溶解度由略微下降转为较快上升,溶液中磷钨杂多酸浓度大幅降低,而同多钨酸根和正钨酸根浓度大幅升高。相同磷酸氢二铵浓度下(NH_4)_2HPO_4-NH_3·H_2O-H_2O系APT溶解度远大于(NH_4)_2HPO_4-H_2O系。
The solubility of ammonium paratungstate in（NH4）2HPO4-NH3·H2O-H2O system was studied with dissolution equilibrium method.As the ammonia concentration increases,the solubility of APT drops slightly at first and then rapidly rises,and tungstophosphoric acid concentration is significantly reduced in the solution,while the concentration of isopolytungstate and normal tungstate ions significantly increases.With the same concentration of diammonium phosphate,the solubility of APT in（NH4）2HPO4-NH3·H2O-H2O system is much higher than that in（NH4）2HPO4-H2O system.
作者
万林生
金先文
赖星任
杨亮
刘鹏
梁勇
WAN Lin-sheng JIN Xian-wen LAI Xing-ren YANG Liang LIU Peng LIANG Yong(School of Metallurgy and Chemical Engineering,Jiangxi University of Science and Technology, Ganzhou 341000, China Chongyi Zhangyuan Tungsten Co. , Ltd, Chongyi 341300, China Ganzhou Haichuang Tungsten Co. , Ltd, Dayu 341200, China Engineering Research Center of High-efficiency Development and Application Technology of Tungsten Resources under Education Ministry, Ganzhou 341000, China)
出处
《稀有金属与硬质合金》
CAS
CSCD
北大核心
2016年第5期6-10,共5页
Rare Metals and Cemented Carbides
基金
资源与环境领域国家863计划课题(2012AA061902)
中国博士后基金特别资助项目(2015T80694)
中国博士后基金项目(2013M541879)
江西省博士后择优资助项目(2013ky37)
关键词
仲钨酸铵(APT)
磷酸氢二铵
氨水
溶解性能
磷钨杂多酸
溶解平衡法
ammonium paratungstate（APT）
diammonium phosphate
ammonia
solubility
tungstophosphoric acid
dissolution equilibrium method
