La (III) polychelates of phenolic resin: synthesis, characterization and ion-exchange study

Kapadia, Malav; Patel, Mayur M.; Patel, G.R.; Joshi, J. D.

doi:10.1007/s10965-007-9169-8

Cited by 13 publications

(6 citation statements)

References 10 publications

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“…Due to the difference in the rate of uptake of the metal ions and the shortest time being required for the adsorption for Fe 3+ , it may be possible to use the terpolymers to separate Fe 3+ ions from their admixture with Cu 2+ , Ni 2+ , Co 2+ , Zn 2+ and Pb 2+ ions. These observations are in good agreement with those of the earlier works …”

Section: Resultssupporting

confidence: 94%

Separation of metal ions by the influence of a cation-exchange terpolymer involving 2-amino-6-nitrobenzothiazole-ethylenediamine-formaldehyde

Ahamed¹,

Subha

Jeyakumar

et al. 2014

Polym. Int.

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A novel terpolymer involving 2-amino-6-nitrobenzothiazole and ethylenediamine with formaldehyde was synthesized by a polycondensation technique using glacial acetic acid as a reaction medium. The resulting chelating terpolymer resin was characterized using elemental analysis, physicochemical parameters, and UV-visible, Fourier transform infrared, 1 H NMR and 13 C NMR spectral studies. Average molecular weights of the terpolymer were determined using gel permeation chromatography. The surface morphology and the nature of the terpolymer were investigated using scanning electron microscopy and X-ray diffraction. The chelation ion-exchange property of the terpolymer was determined against some common metal ions such as Fe 3+ , Co 2+ , Ni 2+ , Cu 2+ , Zn 2+ and Pb 2+ using the batch equilibrium method. Effects of parameters such as the pH, contact time and various electrolyte concentrations were studied. The reusability of the terpolymer was checked in terms of its effective repeated usage. The results of the Langmuir and Freundlich adsorption isotherm models were best fitted with each other and the reaction kinetics followed pseudo second-order kinetics. The terpolymer showed good results against Fe 3+ , Cu 2+ and Ni 2+ ions compared to those against the other metal ions.

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Section: Resultssupporting

confidence: 94%

Separation of metal ions by the influence of a cation-exchange terpolymer involving 2-amino-6-nitrobenzothiazole-ethylenediamine-formaldehyde

Ahamed¹,

Subha

Jeyakumar

et al. 2014

Polym. Int.

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“…Chelating groups can be incorporated in order to increase the sorb or modify the selectivity of ions. 28,29 So, phenolic resins have been used for extraction of heavy metals, [30][31][32][33][34][35] lanthanide metal ions, [36][37][38][39][40] and radionuclides. 29,[41][42][43][44][45][46][47][48] It is believed that polymers with a combination of diglycolamide derivatives and phenolic group can improve the existing sorbents system developed for REEs extraction.…”

Section: Introductionmentioning

confidence: 99%

Extraction and recovery of rare earths by chelating phenolic copolymers bearing diglycolamic acid or diglycolamide moieties

Arrambide

Arrachart

Berthalon

et al. 2019

Reactive and Functional Polymers

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Extraction and recovery of rare earth elements (REEs) have been studied using ion-exchange and chelating process thanks to phenol copolymeric resins. The ion-exchange and chelating resins have been prepared through an alkaline polycondensation reaction of phenolic diglycolamide derivatives with admixture of phenol, catechol or resorcinol in the presence of formaldehyde as crosslinker. The phenol copolymeric resins were fully characterized and involved in sorption experiments. The sorption experiments of rare earth elements have been investigated in different acidic conditions. Lanthanum (La), europium (Eu) and ytterbium (Yb) were chosen to represent the light, medium and heavy REEs respectively. Changes in the extraction properties of the copolymeric resins have been observed depending on the nature of chelating groups in the phenolic matrices and the extraction conditions. The results indicate that the synthesized materials are good sorbent for REEs with cation uptake capacity in the range 50-100 mg/g and in some cases above 150 mg/g.

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“…Thermal stability data of ligand and their metal polychelates are important to confirm the presence of metal ions, either as coordination complexes or as absorbed species. Metal ions present in metal polychelates are expected to have a greater effect on thermal properties of chelating polymer . It is known that thermal stability of the metal polychelates is strongly dependent on the structure of the polymeric ligand and mode of complexation than that of polymer itself.…”

Section: Resultsmentioning

confidence: 99%

“…Metal ions present in metal polychelates are expected to have a greater effect on thermal properties of chelating polymer. 24 It is known that thermal stability of the metal polychelates is strongly dependent on the structure of the polymeric ligand and mode of complexation 25 than that of polymer itself. Thermal studies have been used to ascertain the presence of water of crystallization as well as coordination.…”

Section: Thermal Analysismentioning

confidence: 99%

Antimicrobial Polyurea: Synthesis, Spectral, and Thermal Overview of Some New Metal Polychelates

2015

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Novel polyureas were synthesized by the addition polymerization of o-phenylenediamine and toluene 2,4 diisocyanate in 1:1 molar ratio to investigate the biocidal nature of polyurea ligand and its metal polychelates. Some of the transitional metals were allowed to react with this polyurea in 2:1 ligand to metal mole ratio. The successful preparation of polyurea and metal-containing polyurea was analyzed by elemental analysis and other analytical techniques such as FTIR and 1 H NMR. The geometry of metal-containing polyurea was determined by electronic spectra and magnetic moment measurement. Thermal stability of entire series of synthesized compound was determined by thermogravimetric analysis, and results show that incorporation of metal enhances thermal stability. Microbial actions of the polyurea's were investigated against some bacteria and fungi, namely Staphylococcus aureus, Escherichia coli, and Bacillus subtilis (bacteria), Aspergillus niger, Candida albicans, and Aspergillus flavus (fungi). Antimicrobial screening tests gave good results in the presence of metal ion in the ligand system. C

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La (III) polychelates of phenolic resin: synthesis, characterization and ion-exchange study

Cited by 13 publications

References 10 publications

Separation of metal ions by the influence of a cation-exchange terpolymer involving 2-amino-6-nitrobenzothiazole-ethylenediamine-formaldehyde

Separation of metal ions by the influence of a cation-exchange terpolymer involving 2-amino-6-nitrobenzothiazole-ethylenediamine-formaldehyde

Extraction and recovery of rare earths by chelating phenolic copolymers bearing diglycolamic acid or diglycolamide moieties

Antimicrobial Polyurea: Synthesis, Spectral, and Thermal Overview of Some New Metal Polychelates

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