甲基膦酸二(1-甲庚)酯萃取硝酸的平衡常数
DETERMESfATION OF EQUILIBRIUM CONSTANTS FOR THE SYSTEM DMHMP-C_6H_6-HNO_3
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摘要: <正> 甲基膦酸二(1-甲庚)酯(DMHMP)为一性能优良的萃取剂。1964年,袁承业等报道了该试剂的合成及对铀、钍的萃取性能。这种萃取剂与磷酸三丁酯相比,其分子中甲基直接与磷原子相连,甲基的推电子效应使P=O键上的电子云密度增大,因此具有更大的络合能力,它已成功地被用于稀土元素的萃取分离。Abstract: The equilibria for the extraction of nitric acid with DMHMP were studied. The complex formation constants for the extraction of nitric acid βt were calculated by the method of corresponding solution with the following results:β1 = 10.0;β2=0.13.
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