中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 20 No. 8 August 2010 |
Cyanex272-P507 impregnated resin
（School of Materials and Chemistry Engineering,
Jiangxi University of Science and Technology, Ganzhou 341000, China）
Abstract:Instrument of IR spectrometer and methods of saturation, equimolar series change and slope were applied to study the extraction mechanism of Cyanex272-P507 impregnated resin for heavy rare earths from hydrochloric acid solution. The results show that the molar ratio of Cyanex272-P507 to rare earth in the extraction complex is 3. Chlorine ions do not participate in coordination.
The extraction reaction can be expressed as = (where HA represents
Cyanex272 and HL represents P507). The synergic extractant formed in extraction chromatography is in a form of monopolymer and with a chemical structure of REA3/2L3/2.
Key words: Cyanex272; P507; impregnated resin; heavy rare earth elements; adsorption−extraction mechanism
