Results 281 to 290 of about 256,888 (333)

New Chelating Ion-Exchange Resin Synthesized via the Cyclopolymerization Protocol and Its Uptake Performance for Metal Ion Removal

, 2015
Azoisobutyronitrile-initiated cycloterpolymerization of [(diallylamino)propyl]phosphonic acid hydrochloride (90 mol %), cross-linker 1,1,4,4-tetraallylpiperazinium dichloride (10 mol %), and SO2 (100 mol %) afforded a new pH-responsive cross-linked ...
Shaikh A. Ali, I. W. Kazi, N. Ullah
semanticscholar   +1 more source

PREPARATION OF ION-EXCHANGE RESINS

Canadian Journal of Chemistry, 1954
Ion-exchange resins as membranes and in granular form have been prepared by the copolymerization of divinylbenzene with various esters of p-styrene-sulphonic acid and subsequent hydrolysis. The synthesis of the sulphonated styrene monomers is described.
J. Ciric, I. H. Spinner, W. F. Graydon
openaire   +2 more sources

Hypercrosslinked Ion-Exchange Resins

2011
Publisher Summary This chapter reviews the ion exchange capacity and swelling behavior of hypercrosslinked strong acidic ion-exchange resins. The swelling of hypercrosslinked sulfonated ion-exchanger in nonpolar benzene, heptane, and ethylene dichloride is only insignificantly smaller than that in water or polar methanol.
Vadim A. Davankov, Maria Tsyurupa
openaire   +2 more sources

Kinetics of the Epoxidation of Castor Oil with Peracetic Acid Formed in Situ in the Presence of an Ion-Exchange Resin

, 2014
The kinetics of the epoxidation of castor oil in benzene with peracetic acid formed in situ from acetic acid and hydrogen peroxide in the presence of an ion-exchange resin as a catalyst was studied.
M. Janković, Snežana Sinadinović-Fišer, Olga M. Govedarica   +2 more
semanticscholar   +1 more source

REMOVAL OF FLUORIDE IONS BY ION EXCHANGE RESIN: KINETIC AND EQUILIBRIUM STUDIES

, 2014
The extent of the problem of the excessive fluoride in drinking water remains an important health issue. In the present work, strong-base anion resins were investigated to assess their sorptive removal capacity of fluoride from water.

semanticscholar   +1 more source

[2] Improved ion-exchange resins

1977
Publisher Summary This chapter explores the importance of particle size, size distribution, and cross-linkage in the resins employed in ion-exchange and their application in the improvement of analysis. Ion-exchange resins have been improved in recent years through advances in polymer chemistry technology, by narrower size classification, and by ...
openaire   +3 more sources

Ion Exchange Resins as Catalysts

Nature, 1947
ION exchange resins, in the hydrogen form, appear to offer several advantages as acid catalysts, such as the possibility of their continuous or repeated use without renewal, and their easy removal, by decantation or otherwise, from the reaction mixture.
G. Garrod Thomas, C. W. Davies
openaire   +2 more sources

A liquid ion-exchange resin microphone

Life Sciences, 1969
Abstract In earlier reports (1,2) an “ion-exchange resin microphone” was described in which a liquid ion-exchange resin ∗ , non-miscible with water, was used to hold the bound ion, with the counter-ion in a butanol-water phase. This system was found to act as a high-fidelity microphone and several preparations were made and demonstrations given. At a
openaire   +3 more sources

Synthesis of Novel Lignin-Based Ion-Exchange Resin and Its Utilization in Heavy Metals Removal

, 2013
A new lignin-based resin (LBR) was prepared by condensation polymerization of sodium lignosulfonate with glucose under acidic conditions. The physical and chemical properties of LBR were characterized by scanning electron microscopy (SEM), X-ray ...
Fengbing Liang, Y. Song, Chongpin Huang, Yingxia Li, Biaohua Chen   +4 more
semanticscholar   +1 more source

Medical Uses of Ion-Exchange Resins

New England Journal of Medicine, 1951
THE use of the ion-exchange resins in the fields of chemistry, industry and medicine is relatively recent but is becoming increasingly significant.
openaire   +3 more sources