CAJ | 학술논문

研究了P204(二-(2-乙基己基)磷酸,HA)和N235(三烷基叔胺,R_3N)二元体系在HCl介质中对金属钼的萃取. 结果表明,P204和N235混合萃取剂在萃取钼时存在协同效应,并且在N235摩尔分数为0.7时协萃系数为2.24;考察了溶液酸度、P204或N235浓度及温度对萃取钼的影响,确定了协萃络合物为(R_3NH)_3·HMo_8O_(26)·(HA)_2,并比较了负载前后有机相的红外光谱.
연구료P204(이-(2-을기기기)린산,HA)화N235(삼완기숙알,R_3N)이원체계재HCl개질중대금속목적췌취. 결과표명,P204화N235혼합췌취제재췌취목시존재협동효응,병차재N235마이분수위0.7시협췌계수위2.24;고찰료용액산도、P204혹N235농도급온도대췌취목적영향,학정료협췌락합물위(R_3NH)_3·HMo_8O_(26)·(HA)_2,병비교료부재전후유궤상적홍외광보.
Synergistic effect on the extraction of molybdenum by the mixed extractants of di-2-ethylhexyl phosphoric acid ( P204) and trialkylamine N235 was investigated. The mixed system showed an obvious enhancement on the extraction of molybdenum with a mole fraction of N235 being about 0. 7. The effects of the aqueous acidity, the concentration of P204 or N235 and temperature on the extraction of molybdenum were further studied. The reaction mechanism was deduced and the extracted species was determined to be (R_3NH)_3 o HMo_8O_(26) o (HA)_2. FT-IR spectra of the mixed extractants and the loaded organic phase were examined.