2-羟基-5-仲辛基-二苯甲酮肟与P_(538)对钯的协同萃取

Synergistic Extraction of Palladium(Ⅱ)with P_(538) and 2-hydroxyl-5-sec-n-octy1-diphenyloxime

通过 2 -羟基 - 5-仲辛基 -二苯甲酮肟 ( N510 )与 P53 8的氯仿溶液 ,从高氯酸介质中对钯协同萃取的研究 ,采用斜率法确定了萃合物的组成为 :L· Pd· A.协萃反应平衡常数为 lg K12 =3.114,协同萃取配合物生成常数为β12 =91.6.

The synergistic extraction of Pd(Ⅱ) from perchloric acid system with 2 hydroxy1 5 sec n octy1 diphenyloxime(N 510 )and P 538 has been investigated. By the method of slope analysis, the compsition of the synergistic extracting complexes have been determined to be L·Pd·A. The mechanism of the synergistic extraction of Pd(Ⅱ) has been proposed as follows: Pd 2+ (A) +H 2A (o) =K 12 L·Pd·A (o) +3H + (A) Moreover, the equilibrium constants and the thermodynamic functions of the synergistic reactions have been calculated.