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在盐酸介质中伯胺在低酸度下可近于定量地萃取铂与钯,但对锗的萃取则不能令人满意。铑在盐酸中以配阴离子存在,理应易以离子对缔合形式为胺类萃取,故其萃取率很低令人费解。国产长链仲碳伯胺N_(1923)是含19～23个碳原子的伯胺的混合物,与国外的Primene-JMT相当,主要用于钍的萃取,对贵金属的萃取未见报道。本文研究了N_(1923)在盐酸中对铂、钯和铑的萃取,并初步探讨了其萃取机理。
In hydrochloric acid medium, primary amines can extract platinum and palladium at low acidity, but the extraction of germanium is unsatisfactory. Rhodium in hydrochloric acid with anions exist, it should be easy to ion-association form of amine extraction, so the extraction rate is very puzzling. The domestic long chain secondary amyl amine N_ (1923) is a mixture of primary amines containing 19 ~ 23 carbon atoms, which is equivalent to Primene-JMT abroad. It is mainly used for the extraction of thorium, and no extraction of precious metals has been reported. In this paper, the extraction of platinum, palladium and rhodium from N_ (1923) in hydrochloric acid was studied and its extraction mechanism was discussed.