Structural influences on the lanthanide-actinide selectivity of some aminocarboxylates

Powell, J.E.; Potter, Michael Wayne; Burkholder, H.R.; Potter, E.D.H.; Tse, Pui-Kwan

doi:10.1016/s0277-5387(00)87165-x

Cited by 11 publications

(7 citation statements)

References 12 publications

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“…3 The complex formation constants of rare earth metal ions in aqueous solution have been reported and are relatively large with the ligands having carboxylic group .4,5 From this view point, the complexation with poly(acrylic acid) (PAA) and the PAA grafted on polyethylene (PE) was studied in this paper, using samarium ion (Sm3+) as the example of rare earth metal ions.…”

Section: Introductionmentioning

confidence: 99%

Complexation of samarium ion with poly(acrylic acid) grafted onto polyethylene by radiation‐induced method

Maekawa

Nishide

Tsuchida

et al. 1984

J of Applied Polymer Sci

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Acrylic acid was graft‐polymerized onto polyethylene powder by preirradiation method. The grafted powder (PE‐g‐AA) rapidaly adsorbed Sm3− ion in high efficiency. The poly(acrylic acid) grafted to the surface region of PE acted as an effective chelating site for the relatively large Sm ion. The complex formation constant of Sm ion with PE‐g‐AA was much larger than those of Sm ion with poly(acrylic acid) and propionic acid and of Cu2+ ion with PE‐g‐AA.

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Section: Introductionmentioning

confidence: 99%

Complexation of samarium ion with poly(acrylic acid) grafted onto polyethylene by radiation‐induced method

Maekawa

Nishide

Tsuchida

et al. 1984

J of Applied Polymer Sci

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“…Comparing the values of BCPA and PMDTA (65) in Figure 9 and Figure 5» it is seen that the stability constants of BCPA are about ten times lower than those of PMDTA which is a hexadentate ligand. That the dipolar ligand, BCPA, exhibits properties similar to PMDTA indicates that BCPA is also a hexa dentate ligand.…”

Section: Tedta and Beata Cation-exchange Elutionsmentioning

confidence: 96%

“…As predicted, from the same stability constants, the separation factor equals one. Therefore, Am cannot be separated from Eu and Tb with TEDTA as was done in the case of the EEDTA system (65). However, with BEATA, Am was eluted slightly ahead of Eu, but there was a considerable amount of overlapping ( Figure 8).…”

Section: Tedta and Beata Cation-exchange Elutionsmentioning

confidence: 97%

“…bility constants decrease tremendously CLO with respect to EEDTA, Figure 5) (65). Because of this, it appears that the gradual down turn (in the case of DTFA, EEDTA and TEDTA) midway through the stability sequences must mean that one of the four terminal carboxylate groups is partially or completely detached so that one five-membered chelate ring is removed.…”

Section: Experimental Protonation Constants Of Polyaminopolycarboxylamentioning

confidence: 97%

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Design and synthesis of some polyaminopolycarboxylic acids and the structural influence of their anions on the separation of actinides and lanthanides

Tse

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INFORMATION TO USERSThis reproduction was made from a copy of a document sent to us for microfilming. While the most advanced technology has been used to photograph and reproduce this document, the quality of the reproduction is heavily dependent upon the quality of the material submitted.The following explanation of techniques is provided to help clarify markings or notations which may appear on this reproduction. 1.The sign or "target" for pages apparently lacking from the document photographed is "Missing Page(s)". If it was possible to obtain the missing page(s) or section, they are spliced into the film along with adjacent pages. This may have necessitated cutting through an image and duplicating adjacent pages to assure complete continuity.2. When an image on the film is obliterated with a round black mark, it is an indication of either blurred copy because of movement during exposure, duplicate copy, or copyrighted materials that should not have been filmed. For blurred pages, a good image of the page can be found in the adjacent frame. If copyrighted materials were deleted, a target note will appear listing the pages in the adjacent frame.3. When a map, drawing or chart, etc., is part of the material being photographed, a definite method of "sectioning" the material has been followed. It is customary to begin filming at the upper left hand comer of a large sheet and to continue from left to right in equal sections with small overlaps. If necessary, sectioning is continued again-beginning below the first row and continuing on until complete.

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“…Upon replacing the ethylene linkages of EEDTA by propylene in BPETA, the acidity of the chelating agent is lessened (Table 10) In reducing dentate character from heptadentate to hexadentate, it is more likely that a terminal (carboxylate) 0 will detach rather than either the ether 0 or a tertiary amine N, because ruination of fewer rings occurs. The destruction of two chelate rings would decrease the stability of a complex tremendously (65). Therefore, it appears to be more reasonable to assume that one of the carboxylate group is released rather than an atom associated with a greater number of rings.…”

Section: Tedta and Beata Cation-exchange Elutionsmentioning

confidence: 99%

Design and synthesis of some polyaminopolycarboxylic acids and the structural influence of their anions on the separation of actinides and lanthanides

Tse

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This reproduction was made from a copy of a document sent to us for microfilming. While the most advanced technology has been used to photograph and reproduce this document, the quality of the reproduction is heavily dependent upon the quality of the material submitted. The following explanation of techniques is provided to help clarify markings or notations which may appear on this reproduction. 1.The sign or "target" for pages apparently lacking from the document photographed is "Missing Page(s)". If it was possible to obtain the missing page(s) or section, they are spliced into the film along with adjacent pages. This may have necessitated cutting through an image and duplicating adjacent pages to assure complete continuity. 2. When an image on the film is obliterated with a round black mark, it is an indication of either blurred copy because of movement during exposure, duplicate copy, or copyrighted materials that should not have been filmed. For blurred pages, a good image of the page can be found in the adjacent frame. If copyrighted materials were deleted, a target note will appear listing the pages in the adjacent frame. 3. When a map, drawing or chart, etc., is part of the material being photographed, a definite method of "sectioning" the material has been followed. It is customary to begin filming at the upper left hand comer of a large sheet and to continue from left to right in equal sections with small overlaps. If necessary, sectioning is continued again-beginning below the first row and continuing on until complete. 4. For illustrations that cannot be satisfactorily reproduced by xerographic means, photographic prints can be purchased at additional cost and inserted into your xerographic copy. These prints are available upon request from the Dissertations Customer Services Department. 5. Some pages in any document may have indistinct print. In all cases the best available copy has been filmed.

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Structural influences on the lanthanide-actinide selectivity of some aminocarboxylates

Cited by 11 publications

References 12 publications

Complexation of samarium ion with poly(acrylic acid) grafted onto polyethylene by radiation‐induced method

Complexation of samarium ion with poly(acrylic acid) grafted onto polyethylene by radiation‐induced method

Design and synthesis of some polyaminopolycarboxylic acids and the structural influence of their anions on the separation of actinides and lanthanides

Design and synthesis of some polyaminopolycarboxylic acids and the structural influence of their anions on the separation of actinides and lanthanides

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