Selective Separation of Palladium from Organic Solutions Containing Nickel or Platinum using Polythioamide as a Sorbent

The feasibility of the selective recovery of Pd from organic liquid waste using polythioamide (PTA) as a sorbent has been investigated. PTA effectively sorbed Pd(II) in some organic solutions under not only acidic conditions but also basic conditions. PTA was also able to sorb Pd from organic soluti...

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Bibliographic Details
Published in:Journal of inorganic and organometallic polymers and materials 2009-03, Vol.19 (1), p.67-73
Main Authors: Kagaya, Shigehiro, Tanaka, Erika, Kawai, Nobuhiro, Masore, Ikumi, Sato, Emi, Hasegawa, Kiyoshi, Kishi, Masato, Kanbara, Takaki
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Inorganic Chemistry
Organic Chemistry
Polymer Sciences
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Summary:The feasibility of the selective recovery of Pd from organic liquid waste using polythioamide (PTA) as a sorbent has been investigated. PTA effectively sorbed Pd(II) in some organic solutions under not only acidic conditions but also basic conditions. PTA was also able to sorb Pd from organic solutions containing PdCl 2 (PhCN) 2 and Pd 2 (dba) 3 . The results for the molecular structure of a model compound ([Pd(C 11 H 15 NS) 4 ]Cl 2 ) suggest that the presence of a S donor plays an important role in the sorption of Pd(II) by PTA. The sorbed Pd was quantitatively eluted using 1,3-bis(diphenylphosphino)propane in MeOH, and the recovered PTA can be reused at least five times. The selective separation of Pd(II) was achieved even from organic solutions containing a 100 times larger amount of Ni(II) or Pt(IV) under acidic conditions or basic conditions, respectively.
ISSN:1574-1443
1574-1451
DOI:10.1007/s10904-008-9250-8