Anion-exchange ability of neutral hydrophobic hypercrosslinked polystyrene

Penner, Natasha; Nesterenko, Pavel N.

doi:10.1039/a902449b

Cited by 17 publications

(8 citation statements)

References 8 publications

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“…The O 1s photoelectron peak (532.9 eV) of the polymer could be due to such bonds as C-O-C, O-C-O, and C-OH [48,49]. The Cl 2p3/2 binding energy corresponds to chlorine in aro matic rings [50].…”

Section: Resultsmentioning

confidence: 99%

Effect of the conditions of thermal reduction on the formation, stability, and catalytic properties of polymer-stabilized palladium nanoparticles in the selective hydrogenation of acetylene alcohols

et al. 2014

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This work is dedicated to studying the thermal degradation of palladium acetate in commercial MN270 hypercrosslinked polystyrene in the temperature range of 200 to 325°C by means of TGA and XPS. It is shown that palladium acetate distributed in hypercrosslinked polystyrene is destroyed with the formation of palladium metal at lower temperatures than the pure salt powder. It is established that the formation and stabilization of Pd 7 -Pd 10 palladium clusters and their partial aggregation with the formation of palladium nanoparticles occur in the course of destruction. Catalytic testing of the resulting systems in selective triple bond hydrogenation in dimethylethynylcarbinol in a toluene solution at 90°C reveals their considerable supe riority in activity and selectivity over commercial Lindlar catalyst: a more than twofold increase in TOF at 97.8% selectivity.

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Section: Resultsmentioning

confidence: 99%

Effect of the conditions of thermal reduction on the formation, stability, and catalytic properties of polymer-stabilized palladium nanoparticles in the selective hydrogenation of acetylene alcohols

et al. 2014

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“…It could be the reason for lower dye adsorption by activated carbon from the neutral solution when compared to MN 200. At pH lower than pH pzc the presence of significant positive zeta potential on the MN 200 surface was attributed only to the presence of oxygen in the framework of this adsorbent [18,36]. Oxygencontaining groups (carbonyl, esters and alcohols) on the surface of polymer beads might originate from grafted or entangled chains of the surfactants employed in suspension polymerization.…”

Section: Effect Of Initial Solution Concentration and Ph On The Dye Rmentioning

confidence: 94%

Comparison of the efficiency of activated carbon and neutral polymeric adsorbent in removal of chromium complex dye from aqueous solutions

Kaušpėdienė¹,

Kazlauskienė²,

Gefenienė³

et al. 2010

Journal of Hazardous Materials

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“…A new polymeric material, so-called hypercrosslinked polystyrene (HCPS), is of interest as a stationary phase for HPLC. [1][2][3] HCPS has better mechanical properties than other polymers used in HPLC. High rigidity and a unique bimodal porous structure are typical of this material.…”

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confidence: 99%

“…1 Being a hydrophobic adsorbent, HCPS has a good wetting ability by water, and fine particles of HCPS can form a compact precipitate. It was found 2,3 that non-modified HCPS (a neutral polymer) exhibits strong anion-exchange ability towards inorganic anions. This property was attributed 4 to the presence of carbonyl groups at the surface of HCPS, which, under acid conditions, are protonated and can be responsible for the anion-exchange properties of HCPS.…”

mentioning

confidence: 99%