当前位置: X-MOL 学术Ind. Eng. Chem. Res. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Quantitative Study on Dissolution Behavior of Nd2O3 in Fluoride Melts
Industrial & Engineering Chemistry Research ( IF 4.2 ) Pub Date : 2018-01-27 00:00:00 , DOI: 10.1021/acs.iecr.7b04125
Xiaoling Guo 1 , Zhi Sun 1, 2 , Jilt Sietsma 1 , Bart Blanpain 3 , Muxing Guo 3 , Yongxiang Yang 1
Affiliation  

The dissolution of rare earth oxides in molten fluorides is a critical step in the preparation of the corresponding rare earth metals by oxide-fluoride electrolysis. However, quantitatively understanding the nature of dissolution, especially in the case of molten salts, is usually difficult to be achieved by postmortem characterization. In this paper, the dissolution behavior of Nd2O3 particles in molten fluorides was studied via in situ observation with confocal scanning laser microscopy. Combining direct observation with thermodynamic analyses on the oxide dissolution, the rate-limiting step(s) and the effects of parameters like temperature, salt type, and composition on the dissolution rate are identified. This study provides a methodology to estimate the dissolution kinetics of rare earth oxides in molten fluorides during their primary and secondary processing.

中文翻译:

Nd 2 O 3在氟化物熔体中溶解行为的定量研究

稀土氧化物在熔融氟化物中的溶解是通过氧化物-氟化物电解制备相应稀土金属的关键步骤。但是,通常难以通过事后鉴定来定量地理解溶解的本质,尤其是在熔融盐的情况下。本文通过原位研究了Nd 2 O 3颗粒在熔融氟化物中的溶解行为。共聚焦扫描激光显微镜观察。结合对氧化物溶解的直接观察和热力学分析,确定了限速步骤以及温度,盐类型和组成等参数对溶解速率的影响。这项研究提供了一种方法,可以估算稀土氧化物在熔融氟化物的一级和二级加工过程中的溶解动力学。
更新日期:2018-01-27
down
wechat
bug