氯化钇阳离子膜电解制备Y(OH)3并热处理合成Y2O3
Yttrium Hydroxide was Prepared by Electrolysis of Y(OH)3 Cation Membrane and Heat Treated to Generate Y2O3
洑阳成真 1林胜男 1徐太宇 1张峰 1张廷安1
作者信息
- 1. 东北大学冶金学院,辽宁沈阳 024110
- 折叠
摘要
通过电化学方法制备稀土氧化物在环保和经济上极具优势,阳离子交换膜电解氯化稀土转化技术还未应用于Y2O3的制备过程,对于YCl3转化过程的参数和优化方法仍不清楚.本研究以氯化钇水溶液为原料通过阳离子交换膜电解技术,在阴极得到了片层状Y(OH)3沉积物.用DSC-TG,FTIR和XRD研究了 Y(O11)3的热分解过程,得到了继承前驱体结构的Y2O3产物.使用SEM和XRD测试了不同极距、阴极钇离子浓度、电流密度、温度对电解产物的晶体和形貌的影响.得到最佳实验条件为:5 cm极距、0.025 mol·L-1阴极钇离了浓度、31.3 mA·cm-2电流密度和55 ℃电解温度 下,产物具有最好的形貌和粒子结构.
Abstract
The preparation of rare earth oxides by electrochemical method has great advantages in environmental protection and economy,and the cation exchange membrane electrolytic rare earth chloride conversion technolo-gy has not been applied to the preparation process of Y2O3,and the parameters and optimization methods of the Y(OH)3 conversion process are still unclear.In this study,Y(OH)3 aqueous solution was used as raw material,and flake yttrium hydroxide deposits were obtained at the cathode by cation exchange membrane electrolysis technology.The thermal decomposition process of yttrium hydroxide was studied by DSC-TG,FTIR and XRD,and yttria products inherited from the precursor structure were obtained.SEM and XRD were used to test the ef-fects of different pole pitches,cathode yttrium ion concentration,current density,and temperature on the crys-tals and morphology of the electrolyte.The best experimental conditions are as follows:5 cm pole distance,0.025 mol·L-1 cathode yttrium ion concentration,31.3 mA·cm-2 current density and 55 ℃ electrolysis temperature,the product has the best morphology and particle structure.
关键词
离子交换膜电解/Y(OH)3/Y2O3/水溶液电解/稀土Key words
ion exchange membrane electrolysis/Y(OH)3/Y2O3/electrolysis of aqueous solutions/rare earths引用本文复制引用
基金项目
国家重点研发计划项目(2022YFB3504502)
出版年
2024
NETL
NSTL
万方数据