二-(2-乙基己基)磷酸萃取锰(Ⅱ)的研究

高等学校化学学报 ›› 1984, Vol. 5 ›› Issue (1): 7.

二-(2-乙基己基)磷酸萃取锰(Ⅱ)的研究

沈静兰, 蒋德华, 孙思修

山东大学化学系

收稿日期:1982-05-05 出版日期:1984-02-24 发布日期:1984-02-24

STUDIES ON THE EXTRACTION OF MANGANESE (Ⅱ) FROM SULFATE SOLUTION WITH Di-(2-ETHYLHEXYL) PHOSPHORIC ACID IN KEROSENE

Shen Jinglan, Jiang Dehua, Sun Sixiu

Department of Chemistry, Shandong University, Jinan

Received:1982-05-05 Online:1984-02-24 Published:1984-02-24

摘要/Abstract

摘要： 在25±1℃下用分配法研究了HDEHP-煤油从硫酸盐介质中萃取Mn(Ⅱ)以及HDEHP-TOPO-煤油协同萃取Mn(Ⅱ)的机理;考察了介质pH、金属浓度、萃取剂浓度、温度和中性膦氧试剂对萃取的影响。

Abstract: The partition equilibria for the following systemsMn²⁺/(Na₂·H₂)SO₄(0.1M)/HDEHP-Kerosenc and Mn²⁺/(Na₂·H₂)SO₄(0.1M)/(HDEHP-TOPO)-Kerosene have been studied at 25℃. The extraction reactions were found to be respectively.The effects of temperature and additives, TBP, P₃₅₀, TOPOon the extraction of Mn(Ⅱ) from 0.1M (Na₂,H₂)SO₄ with the solution of HDEHPin kerosene have also been investigated. The synergism of the additives has been found to decrease in the order TOPO>P₃₅₀>TBP. By using the temperature coefficient method, ΔH° of ( i ) was calculated to be-2.90 Kcal/mol in the range of 20-60℃. Thus the extraction of Mn(Ⅱ) from aqueous solution with HDEHPis an exothermic reaction. The increase of distribution ratio Dwith temperature, may be partly due to the increase in pHof the sulfate medium.

TrendMD:

沈静兰, 蒋德华, 孙思修. 二-(2-乙基己基)磷酸萃取锰(Ⅱ)的研究. 高等学校化学学报, 1984, 5(1): 7.

Shen Jinglan, Jiang Dehua, Sun Sixiu . STUDIES ON THE EXTRACTION OF MANGANESE (Ⅱ) FROM SULFATE SOLUTION WITH Di-(2-ETHYLHEXYL) PHOSPHORIC ACID IN KEROSENE. Chem. J. Chinese Universities, 1984, 5(1): 7.