The sorption behavior of N- methyl- 2 - thio- imidazole resin (MTIR ) for Rh(Ⅲ ) ans investigated. The optimum sorption conditiorl of MTIR for Rh (Ⅲ ),sorption rate t1/2 = 84min, sorption capacity 1. 37mmol Rh (Ⅲ )...The sorption behavior of N- methyl- 2 - thio- imidazole resin (MTIR ) for Rh(Ⅲ ) ans investigated. The optimum sorption conditiorl of MTIR for Rh (Ⅲ ),sorption rate t1/2 = 84min, sorption capacity 1. 37mmol Rh (Ⅲ ) /g MTIR, [140.5mg Rh(Ⅲ ) /g MTIR], sorption molar ratio 0. 34 Rh(Ⅲ )/functional group, distribution coefficient D = 2. 05 × 103 mg. g- 1 were determined. The sorption selectivity of MTIR for Rh(Ⅲ ) in the presence of common metal ions, Fe3+, Co2+, Ni2+and Cu2+ was examined. Rh(Ⅲ ) adsorbed on MTIR can be eluted quantitatlvely byusing a mixed solution composed of 20% thio-urea-acetone: 6mol HCl. dm-3 (1: 1vol. ) used as an eluent. Rh(Ⅲ ) can be separated from the mixture of Rh(Ⅲ ) and Fe3+, Co2+, Ni2+,Cu2+ by using D72 resin and MTIR successively.展开更多
文摘The sorption behavior of N- methyl- 2 - thio- imidazole resin (MTIR ) for Rh(Ⅲ ) ans investigated. The optimum sorption conditiorl of MTIR for Rh (Ⅲ ),sorption rate t1/2 = 84min, sorption capacity 1. 37mmol Rh (Ⅲ ) /g MTIR, [140.5mg Rh(Ⅲ ) /g MTIR], sorption molar ratio 0. 34 Rh(Ⅲ )/functional group, distribution coefficient D = 2. 05 × 103 mg. g- 1 were determined. The sorption selectivity of MTIR for Rh(Ⅲ ) in the presence of common metal ions, Fe3+, Co2+, Ni2+and Cu2+ was examined. Rh(Ⅲ ) adsorbed on MTIR can be eluted quantitatlvely byusing a mixed solution composed of 20% thio-urea-acetone: 6mol HCl. dm-3 (1: 1vol. ) used as an eluent. Rh(Ⅲ ) can be separated from the mixture of Rh(Ⅲ ) and Fe3+, Co2+, Ni2+,Cu2+ by using D72 resin and MTIR successively.