Ion Exchanger-Solvent Interactions: Properties and Methodology

Pietrzyk, Donald J.; Marcus, Yizhak

doi:10.1080/10408347608542691

Cited by 13 publications

(2 citation statements)

References 144 publications

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“…The dehydrating action of the organic solvent can also promote the formation of neutral species and anionic complexes of metals (Moody and Thomas, 1968a). Exchange rates generally decrease with increasing concentration of the organic solvent in the system, because the swelling of the exchanger decreases with decrease in polarity of the solvent (Chance, 1951;Pietrzyk and Marcus, 1976). The exchanger can remain swollen also in less polar solvents if pre-swelling is done in water.…”

Section: Introductionmentioning

confidence: 99%

Removal of copper and iron from ethanolic solutions by an anion exchange resin and its implication to rare-earth magnet recycling

et al. 2023

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Section: Introductionmentioning

confidence: 99%

Removal of copper and iron from ethanolic solutions by an anion exchange resin and its implication to rare-earth magnet recycling

et al. 2023

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“…While the porosity of a polymer generally increases as a function of crosslink content, as seen in sp 3 carbon linker groups, 12 a three-dimensionally crosslinked framework reduces its ability to swell, and thus decreases the accessibility of the active sites. High swellability is usually obtained in polymers with lower crosslink content, 30,31 which pore formation is difficult due to close stacking of the linear chains. This further hinders the formation of highdensity active sites in the polymer matrix.…”

Section: ■ Introductionmentioning

confidence: 99%

Polyphenylene-Based Solid Acid as an Efficient Catalyst for Activation and Hydration of Alkynes

et al. 2020

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Porous polymer catalysts possess the potential to combine the advantages of heterogeneous and homogeneous catalysis, namely, easy postreaction recycling and high dispersion of active sites. Here, we designed a −SO 3 H functionalized polyphenylene (PPhen) framework with purely sp 2 -hybridized carbons, which exhibited high activity in the hydration of alkynes including challenging aliphatic substrates such as 1-octyne. The superiority of the structure lies in its covalent crosslink in the xyplane with a π−π stacking interaction between the planes, enabling simultaneously high swellability and porosity (653 m 2 •g −1 ). High acidic site density (2.12 mmol•g −1 ) was achieved under a mild sulfonation condition. Similar turnover frequencies (0.015 ± 0.001 min −1 ) were obtained regardless of acidic density and crosslink content, suggesting high accessibility for all active sites over PPhen. In addition, the substituted benzene groups can activate alkynes through a T-shape CH/π interaction, as indicated by the 8 and 16 cm −1 red shift of the alkyne C−H stretching peak for phenylacetylene and 1-octyne, respectively, in the infrared (IR) spectra. These advantages render PPhen-SO 3 H a promising candidate as a solid catalyst replacing the highly toxic liquid phase acids such as the mercury salt.

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Hétérocycles dioxinniques. Nouvelle méthode de synthèse des benzo (4H) dioxinnes‐1,3

Denis

Delmas

Gaset

1984

Journal of Heterocyclic Chem

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show abstract

Ion Exchanger-Solvent Interactions: Properties and Methodology

Cited by 13 publications

References 144 publications

Removal of copper and iron from ethanolic solutions by an anion exchange resin and its implication to rare-earth magnet recycling

Removal of copper and iron from ethanolic solutions by an anion exchange resin and its implication to rare-earth magnet recycling

Polyphenylene-Based Solid Acid as an Efficient Catalyst for Activation and Hydration of Alkynes

Hétérocycles dioxinniques. Nouvelle méthode de synthèse des benzo (4H) dioxinnes‐1,3

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