P<sub>350</sub>从硝酸介质中萃取Nd(Ⅲ)的动力学研究

引用本文: 孙都成, 古丽, 李德谦. P₃₅₀从硝酸介质中萃取Nd(Ⅲ)的动力学研究[J]. 应用化学, 1993, 10(6): 76-79. shu

Citation: Sun Ducheng, Gu Li, Li Deqian. KINETIC STUDY ON THE EXTRACTION OF NEODYMIUM BY P₃₅₀ IN NITRIC ACID SOLUTION[J]. Chinese Journal of Applied Chemistry, 1993, 10(6): 76-79. shu

P₃₅₀从硝酸介质中萃取Nd(Ⅲ)的动力学研究

1.
1. 新疆大学化学系, 乌鲁木齐;
2.
2. 中国科学院长春应用化学研究所稀土化学与物理开放实验室, 130022 长春
基金项目:
国家自然科学基金

摘要: 本文采用恒界面池法研究了诸因素对甲基磷酸二甲庚酯(P₃₅₀)从硝酸体系中萃取Nd(Ⅲ)动力学的影响,求得反应的表观活化能为11.8kJ/mol,从实验结果推论出萃取过程为界面化学反应的控制机理,得出萃取反应速率方程,并提出中性磷氧萃取剂在萃取金属离子过程中可能存在阳离子交换反应机理。

关键词:

English

KINETIC STUDY ON THE EXTRACTION OF NEODYMIUM BY P₃₅₀ IN NITRIC ACID SOLUTION

1.
1. Department of Chemistry, Xingjiang University, Urumqi;
2.
2. Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun
Received Date: 22 December 1992
Fund Project:
国家自然科学基金

Abstract: The kinetics of the extraction of Nd(Ⅲ) by di-(1-methyl heptyl)methyl phosphonate (P₃₅₀) in nitric acid solution has been studied by using the constant-interface cell technique. The effects of the stirring speed,interfacial area between two phases,temperature,and concentration of P₃₅₀,NO₃^-,amd H⁺ on the extraction rate have been examined. The apparent activation energy was found to be 11.8kJ/mol. The experimental results showed that the rate-controlling step may be the chemical reaction at the interface. A cation exchange mechanism has been proposed.

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P₃₅₀从硝酸介质中萃取Nd(Ⅲ)的动力学研究

English

KINETIC STUDY ON THE EXTRACTION OF NEODYMIUM BY P₃₅₀ IN NITRIC ACID SOLUTION

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

P350从硝酸介质中萃取Nd(Ⅲ)的动力学研究

English

KINETIC STUDY ON THE EXTRACTION OF NEODYMIUM BY P350 IN NITRIC ACID SOLUTION

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

P₃₅₀从硝酸介质中萃取Nd(Ⅲ)的动力学研究

KINETIC STUDY ON THE EXTRACTION OF NEODYMIUM BY P₃₅₀ IN NITRIC ACID SOLUTION

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs