摘要:

Purification of yttrium from dysprosium, holmium, erbium and ytterbium has been studied on the strongly basic anion exchenger Dowex 1×4 in an acetate form and for comparison in an iminodiacetate form. The rare earth element solutions complexed with iminodiacetate acid Ln (imda)2were separated using frontal analysis. The obtained results show the significant effect of en anion exchanger form on separation of Ln(imda)2complexes. An acetate form of the anion ex changer proves particularly effective and economical in yttrium separation from dysprosium, holmium and erbium but IDA form for yttrium separation from ytterbium.

ISSN:0736-6299    

DOI:10.1080/07366298808917942

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor

摘要:

Solutions of tetraalkylammonium thiocyanates in dichloro-methane are hydrolysed by concentrated sulphuric acid in two stages; the first is transfer of thiocyanate ion to the aqueous layer independently of the pairing ion and the second is a homogeneous hydrolysis: the process is important for the regeneration of phase transfer extractants.

ISSN:0736-6299    

DOI:10.1080/07366298808917943

出版商:Taylor & Francis Group    

年代:1988

数据来源: Taylor