在这项研究中,三个配体C 5 H 4 NOCONRR'的配位化学(其中R,R'= i C 3 H 7(L1); R,R'= i C 4 H 9(L2);和R =用硝酸铀酰和一些选定的镧系元素(La,Sm和Eu)硝酸盐探索了由N-氧化物和羧酰胺基组成的H,R'= t C 4 H 9(L3),所有合成的配体及其配合物(1 - 12)型的UO 2(NO 3)2 L(其中,L = L1,L2,和L3为1,2和3)和Ln(NO 3)3(H 2 O)L 2(其中Ln = La,L = 4的L1 , L = 5的L2 , L 6的L3,Ln = Sm, L = L1代表7, L = L2代表8, L = L3代表9; Ln = Eu,L = L1代表10, L = L2代表11, L = L3代表12)已通过元素分析,光谱法表征分析,例如FTIR,1 H-NMR和电喷雾电离质谱(ESI-MS)。固态L1
Process for the extraction of metal values and novel metal extractants
申请人:IMPERIAL CHEMICAL INDUSTRIES PLC
公开号:EP0057797A2
公开(公告)日:1982-08-18
Metal values are extracted from aqueous solutions of metal salts containing halide or pseudo halide ions by pyridine derivatives containing the substituent -(COX)A where X is the group-OR, or -NR2R3 and n is 1,2 or 3. R, is a hydrocarbyl group containing from 5 to 36 carbon atoms and R2 and R3 are hydrogen or a hydrocarbyl group wherein R2 and R3 together contain from 5 to 36 carbon atoms. The process is especially useful for the recovery of metals from leach solutions derived from sulphur-containing ores such as chalcopyrite.