• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Joint Conference on Chemistry >Separation of Gadolinium (Gd) using Synergic Solvent Mixed Topo-D2EHPA with Extraction Method.
【24h】

Separation of Gadolinium (Gd) using Synergic Solvent Mixed Topo-D2EHPA with Extraction Method.

机译：用萃取方法使用协同溶剂混合TOPO-D2ehpa分离钆（GD）。

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The main problem to obtain Gd with high purity is the similarity of chemical properties and physical properties with the other rare earth elements (REE) such as Y and Dy, it is necessary to do separation by the extraction process. The purpose of this research to determine the best solvent type, amount of solvent, feed and solvent ratio in the Gd extraction process, to determine the rate order and the value of the rate constant of Gd concentration based on experimental data of aqueous phase concentration as a function of time and to know the effect of temperature on the reaction speed constant. This research was conducted on variation of solvent, amount of solvent, feed and solvent ratio in the extraction process of Gd separation, extraction time to determine the order value and the rate constant of Gd concentration in extraction process based on the aqueous phase concentration data as a function of time, to the rate constant of decreasing concentration of Gd. Based on the calculation results, the solvent composition was obtained with the best feed to separate the rare earth elements Gd in the extraction process is 1 : 4 with 15% concentration of TOPO and 10% concentration of D2EHPA. The separation process of Gd using extraction method by solvent TOPO-D2EHPA 2 : 1 comparison is better than single solvent D2EHPA/TOPO because of the synergistic effect. The rate order of separation process of Gd follows order 1. The Arrhenius Gd equation becomes k = 1.46 x 10-7 exp (-6.96 kcal/mol/RT).
机译：获得高纯度的GD的主要问题是化学性质和物理性质与其他稀土元素（REE）的相似性，例如Y和Dy，有必要通过提取过程进行分离。该研究的目的是确定GD提取过程中最好的溶剂类型，溶剂，饲料和溶剂比，以确定Gd浓度的速率顺序和基于水相浓度的实验数据的速率常数。时间的函数，并了解温度对反应速度恒定的影响。该研究在GD分离的提取过程中的溶剂，溶剂，进料和溶剂比中的变化，提取时间基于水相浓度数据，提取时间来确定萃取过程中的GD浓度的顺序值和速率常数时间的函数，到Gd浓度降低的速率常数。基于计算结果，用最佳进料得到溶剂组合物，以将稀土元素Gd分离在提取过程中为1：4，具有15％的TOPO浓度和10％的D2ehPa浓度。通过溶剂TOPO-D2EHPA 2：1的萃取方法使用萃取方法的分离过程，比单一溶剂D2EHPA / TOPO更好，因为协同效应。 GD的分离过程的速率顺序遵循顺序1. Arrhenius GD方程变为k = 1.46 x 10-7 exp（-6.96 kcal / mol / Rt）。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号