Preparation and Use of Snake-Cage Polyelectrolytes

Hatch, Melvin J.; Dillon, John A.; Smith, Hugh B.

doi:10.1021/ie50575a021

Cited by 95 publications

(41 citation statements)

References 3 publications

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“…As a result of the change, the resin now retains a variable amount of DON (Bronk 2002). The resin used in this study was manufactured in the Bronk lab by chemically altering another resin (Dowex anion exchange resin, BioRad AG1-X8) to produce AG 11 A8 using the method of Hatch et al (1957). The resin produced in the lab did not retain DON, but had an isolation efficiency comparable to the original BioRad AG 11 A8 resin as described in Bronk & Glibert (1991).…”

Section: Methodsmentioning

confidence: 99%

Dinitrogen fixation and release of ammonium and dissolved organic nitrogen by Trichodesmium IMS101

Mulholland¹,

Bronk²,

Capone³

2004

Aquat. Microb. Ecol.

168

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Section: Methodsmentioning

confidence: 99%

Dinitrogen fixation and release of ammonium and dissolved organic nitrogen by Trichodesmium IMS101

Mulholland¹,

Bronk²,

Capone³

2004

Aquat. Microb. Ecol.

168

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“…Unless otherwise noted, usual reagents were special grade chemicals. 2.2 Synthesis of amphoteric ion exchange resin of snake cage type 3) Dowex 1X4 was conditioned in a column-mode. To the Dowex 1X4 (500 mL or 1 L) packed column, electrolyte solutions and water were supplied in the order of 1 M NaCl, water, 1 M NaOH, water, 1 M HCl, and water.…”

Section: Methodsmentioning

confidence: 99%

“…As far as we searched, such kind of amphoteric ion exchange resin was not commercially available. Thus, we prepared an amphoteric resin of snake cage type by polymerizing p-styrenesulfonate ions contained in the strong-base anion exchange resin as counter ion 3) FT-IR spectra of the resulting resins showed the strong adsorption band of sulfonate ions at 1180 cm . A strong-base anion exchange resin Diaion MA03SS is provided by the ordering production, and then it is difficult to use it as parent resin for the synthesis of more than 2.4 L of the amphoteric resin for the SMBC study.…”

Section: Characterization Of Dowex 1x4-ssmentioning

confidence: 99%

“…These two works 1,2) led us to a study on behavior of an amphoteric ion exchange resin containing both quaternary ammonium and sulfonate groups because it was expected that the quaternary ammonium groups give high efficiency of the separation of sulfuric acid and sugars, and sulfonate groups prevent the marked tailing of sulfuric acid. Unfortunately, we were not able to find such kind of commercially available amphoteric resin and then prepared an amphoteric resin of snake cage type 3) (hereafter abbreviated as Dowex 1X4-SS), in which a strong-base anion exchange resin Dowex 1X4 was used as parent resin and polystyrenesulfonate ions were contained as polymeric counter ion (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

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Separation of Sulfuric Acid and Monosaccharides with a Strong-Base Anion Exchange Resin Containing Polystyrenesulfonate as Polymeric Counter Ion to Reduce Tailing of Sulfuric Acid

Matsuura¹,

Sun²,

Yanase³

et al. 2014

J.I.E.

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This paper describes the separation of sulfuric acid and monosaccharides with an amphoteric ion exchange resin to reduce the tailing of sulfuric acid. The amphoteric ion exchange resin of snake cage type was prepared by polymerizing p-styrenesulfonate ions contained in a strong-base anion exchange resin (Dowex 1X4) as counter ion. First, chloride form Dowex 1X4 (100-200 mesh) was changed into pstyrenesulfonate ion form. Then, p-styrenesulfonate ions in the resin were polymerized for 3 h at 72.5± 2.5°C and for more 3 h at 82.5±2.5°C using a water soluble radical initiator. The resulting resin named Dowex 1X4-SS was treated with 1 M (M = mol dm 3 ) NaCl and finally washed with water in a columnmode. FT-IR spectra and elemental analyses of Dowex 1X4-SS suggested its amphoteric structure of snake cage type. The separation of glucose and sulfuric acid was tested by using a column (i.d. 1.5 cm, resin bed length 29-30 cm) at 50°C. The tailing of sulfuric acid was markedly reduced in case of Dowex 1X4-SS, compared to that of the parent resin Dowex 1X4. In addition, the newly developed Dowex 1X4-SS successfully applied to the continuous separation of monosaccharides and sulfuric acid in concentrated sulfuric acid hydrolyzates of bamboo by means of a simulated moving bed chromatography.

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“…Diese Selektivit~it yon Retardion ist normalerweise dieselbe wie bei den Ionenaustauschern. Daher lassen sich auch verschiedene anorganische Ionen mit Retardion trennen (HATCH et al 1957). Je st~irker ein Ion festgehalten wird, um so gr6ger mug abet die Wassermenge sein, um es auszuwaschen.…”

Section: Na CLunclassified

Beiträge zur Entsalzung mit Retardion 11A8

Schaefer¹

1964

Helgolander Wiss. Meeresunters

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Contributions to desalting with Retardion llA8. The isolation and determination of the soluble organic substances in sea water is very difficult because of the presence of large amounts of inorganic .alts. In order to desalt the water, ion retardation with Retardion 11A8 seems to be a very efficient method. Since this procedure is at the present almost unknowr~, the optimal conditions of separation which have been found are described in this paper. The selectivity of the resin for different ions occurring in sea water is studied. The elution curves of a large number of organic substances (amino acids, carbohydrates, organic phosphorus compounds and organic acids) are described. Recovery of given concentrations of these substances, added to 50 ml of a salt solution similar to sea water, is 95 to 100°/0 for most of the amino acids, carbohydrates and organic phosphorus compounds but less for other substances. Using ion retardation as a desalting means, more than 90 °/0 of the inorganic salts may be removed from the "organic fraction" by a one-step procedure. These experiments may be done on a larger scale in desalting larger volumes of sea water. Ion retardation has proved to be an excellent separation method for biochemistry and water chemistry. Work is in progress to use Retardion 11A8 as a desalting means in the isolation of organic matter from sea water. EINLEITUNG

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Preparation and Use of Snake-Cage Polyelectrolytes

Cited by 95 publications

References 3 publications

Dinitrogen fixation and release of ammonium and dissolved organic nitrogen by Trichodesmium IMS101

Dinitrogen fixation and release of ammonium and dissolved organic nitrogen by Trichodesmium IMS101

Separation of Sulfuric Acid and Monosaccharides with a Strong-Base Anion Exchange Resin Containing Polystyrenesulfonate as Polymeric Counter Ion to Reduce Tailing of Sulfuric Acid

Beiträge zur Entsalzung mit Retardion 11A8

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