N_己基异辛酰胺萃取铑和铱.PDF

34 Precious Metals 1998 , 19 (3) Ξ N- ( , 510641) Extraction of Rhodium( ) and Iridium( ) by N - hexyl isooctylamide Dong Zhengqing , Gu Guobang , Cheng Fei , Wei Xiaolan (Department of Applied Chemistry , Sout h China University of Technology , Guang Zhou 510641 , China) Abstract N - hexyl isooctylamide was used as an ext ractant of Ir ( ) for separation f rom Rh. The influence of t hinner on phase separation and of component s in organic phase on t he ext rac2 tion has been investigated. Under selecting TB P - octane as a t hinner , t he influence of H + , Cl - ions concent ration in aqueous medium on t he ext raction , and ext ractive behaviour of Cu2 + , Fe3 + , Ni2 + ions have been investigated. The water was t he most efficient st ripping agent . Keywords Iridium , Rhodium , N - hexyl isooctylamide , Solvent ext raction N- , H + Cl - Ir ( ) Cu2 + Fe3 + Ni2 + TB P - Rh Ir , , , , NTF837 , 1 Rh Ir , 12, , () P538 Rh 3 Ir Ir ( ) 4, Ir ( ) , Ir ( ) Rh ( ) 9919 % , Rh Ir 105 , N - ( MNA Ir ( ) Rh ( ) , TB P TB P TRP , Rh Ir , Ir Ir ) Ir ( ) Cu2 + , Fe3 + , Ni2 + , 2 211 : N - : , , 142 145 Ξ 1997 - 07 - 14 ? 1994-2009 China Academic Journal Electronic Publishing House. All rights reserved. (400Pa) , 212 , : Ir Rh , Rh 5 , :, XG - 125 11 Rh Rh , 7 , Ir Ir 2% Ir , Rh :, 20min , - 3 311 (1) , : : N- , Ir 8, Ir ( ) 200 g/ ml 3mol/ L HCl , TB P - ( MNA 014mol/ L) Phase separations in t he ext raction wit h different t hinners , Ir , 35 581 G Rh Ir , 6 , Rh , 330 g/ m l I r 3 , 20s 3, 5 % 20 % ( v/ v) TB P 3, 3, 25 % TB P 3 185 g/ ml Ir 10 % TB P , TB P 3, , (2) : TB P - Rh Ir Ir ( ) 5mol/ L HCl 8611 % Ir ( ) 15 %TB P - 2mol/ L HCl , HCl 2mol/ L 8915 % 15 %TB P - Ir 1 7mol/ L HCl Rh 90 190 , 3mol/ L 105 TB P - Rh Rh Rh , RhCl6 3 - 014mol/ L MNA HCl , HCl , HCl 5mol/ L , , 15 %TB P Rh , , RhCl5 ( H2O) 2 - ? 1994-2009 China Academic Journal Electronic Publishing House. All rights reserved. 36 RhCl4 ( H2O) 2 , RhCl6 3 - RhCl6 3 3 ( Z2/ r) , , , TB P - Rh Ir , TB P - (3) T