Ion exchange equilibrium on impregnated sulfonate ion-exchangers with different capacities

Muraviev, Dmitri; Omarova, F.; Дроздова, Н. В.

doi:10.1016/0923-1137(92)90616-a

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“…Hence, the heat treatment of the SISIE sample at T(I) < T '" 373 K < T(2) to a constant weight must lead to the complete removal of the solvent from the polymer and has to result in the stabilization of its capacity.The comparison of the stabilities of untreated SISIE samples with those of resins after a 4 hours "wet drying" is shown inFig.ll. The results presented indicate the substantial stabilization of the SISIE capacities after the heat treatment[48,49].2.5. Improvement of Kinetic Parameters of SISIEAnother positive result which is achieved by the "wet drying" treatment of SISIE is illustrated by the data given inFig.12, where the concentration-volume histories obtained by displacement of H+ with o. IM KCL solution from the untreated (curves I) and heated (curves 2) SISIE samples are shown.…”

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confidence: 84%

“…then is subjected to a heat treatment in a thermostat at T~3 73 K for several Downloaded by [University of Saskatchewan Library] at 11:45 13 June 2016 hours [44,45,47,48]. The capacity stabilization under these conditions follows from the stabilization mechanism mentioned above and can be ascribed to the removal of the solvent from the swollen polymer.…”

Section: Stabilization Of Sisie Capacity By Wet Drying Techniquementioning

confidence: 99%

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Surface Impregnated Sulfonate Ion Exchangers: Preparation, Properties and Application

Muraviev

1998

Solvent Extraction and Ion Exchange

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This paper reviews the results obtained by studying Surface Impregnated Sulfonate Ion Exchangers (SISIE) obtained by modification of macroporous or gel polysterene-divinylbenzene polymers with toluene solutions of dinonylnaphthalene sulfonic acids. Capacities of SISIE of the first type are directly proportional to the concentration of the modifying solution and to the specific surface area of the matrix. Capacities of gel SISIE are much less than those of macroporous samples and depend on the crosslinking of the matrix.Stabilization of SISIE capacity and improvement of their kinetic properties can be achieved using "wet drying " technique. Successive impregnation of the same SISIE sample may be used to increase the capacity of the resin. The ionexchange properties of SISIE are mainly determined by their micellar structure which also defines the areas of possible applications of these ion-exchange materials such as, e.g. ion chromatography and some others Several models have been successfully applied to describe the features of ion exchange processes on SISIE. Application of SISIE as convenient model systems to study aminecarboxylate interaction of amino acid molecules is illustrated by suspension effects measured in SISIE-zwitterlyte and SISIE-HCI suspensions and by the results obtained by the laser-acoustic study of these systems. ') Present address:

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confidence: 84%

Section: Stabilization Of Sisie Capacity By Wet Drying Techniquementioning

confidence: 99%

Surface Impregnated Sulfonate Ion Exchangers: Preparation, Properties and Application

Muraviev

1998

Solvent Extraction and Ion Exchange

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“…This difference in the elution efficiency can be attributed to the specific interaction mechanism of an organic solution containing an extractant with the water-swollen (aqua-impregnated) ion exchanger. This type of ion-exchange mechanism was studied first by Muraviev and Omarova and is known as a “contact granulo-micellar exchange”, , which can be considered as a version of a “contact ion exchange” (proceeding between contacting resin beads in different ionic forms) investigated by Nikolaev and Bogatyrev − and later by Bunzl and Schultz …”

Section: Discussionmentioning

confidence: 99%

Aqua-Impregnated Resins. 2. Separation of Polyvalent Metal Ions on Iminodiacetic and Polyacrylic Resins Using Bis(2-ethylhexyl) Phosphoric and Bis(2-ethylhexyl) Dithiophosphoric Acids as Organic Eluents

1999

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This paper dedicated to the further development of the novel aqua-impregnated-resin (AIR) technique reports the results obtained by studying the column separation of equimolar mixtures of Cu(2+), Al(3+), and Zn(2+) on iminodiacetic (IDA) and polyacrylic (PAR) resins by using 0.2 M heptane solutions of either bis(2-ethylhexyl) phosphoric acid (DEHPA) or bis(2-ethyhexyl) dithiophosphoric acid (DEHDTPA) as selective eluents for extractive desorption of metal ions from the resin phase. The quantitative separation of Cu(2+)-Al(3+) mixtures has been achieved by sequential elution of metals from PAR with DEHDTPA and H(2)SO(4) solutions. Purification of Cu(2+) from Al(3+) and/or Zn(2+) and Al(3+) from Cu(2+) and Zn(2+) is achieved by extractive elution of metal mixtures from IDAR or PAR with DEHPA or DEHDTPA solutions, respectively, followed by stripping of the purified metals with 1.1 M H(2)SO(4). The resulting purity of metals obtained with the yield of >96% exceed 95%.

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Surface Impregnated Sulfonate Ion Exchangers

Muraviev¹

1999

Ion Exchange

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Ion exchange equilibrium on impregnated sulfonate ion-exchangers with different capacities

Cited by 3 publications

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Surface Impregnated Sulfonate Ion Exchangers: Preparation, Properties and Application

Surface Impregnated Sulfonate Ion Exchangers: Preparation, Properties and Application

Aqua-Impregnated Resins. 2. Separation of Polyvalent Metal Ions on Iminodiacetic and Polyacrylic Resins Using Bis(2-ethylhexyl) Phosphoric and Bis(2-ethylhexyl) Dithiophosphoric Acids as Organic Eluents

Surface Impregnated Sulfonate Ion Exchangers

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