Chemistry Journal of Moldova

METALLIC COMPOUNDS IN THE PHASE OF THE RETICULATED IONIC POLYMERS

Author(s):

Vasilii Gutsanu, Constantin Turta, George Filoti


Field: Physical chemistry and chemical physics
Type: Research paper
Issue: 2010 Volume 5, no.2
Pages: 73-82
Keywords:

ion exchangers, Mossbauer spectra, iron, superparamagnetic, complexes, polymer phase.


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Abstract (JPEG)

DOI:
dx.doi.org/10.19261/cjm.2010.05(2).10

Graphical Abstract:
Using the Mossbauer spectroscopy and other physical methods it was demonstrated the presence of different iron compounds like β-FeOOH, α-Fe2O3, and jarosite mineral type compounds: (R4N,H3O)[Fe3(OH)6(SO4)2] or coordination modes: {RCOO-Fe(L4)-OOCR}1+, {R-CO2=Fe(X2)=O2C-R}n, {R-COO-Fe(X4)-OOC-R}n, and {(-NCH2CH2N-)= Fe(X2) =(-NCH2CH2N-)}, where X= H2O, OH-, SO42-., n= from 3- to 1+ in the ion-exchange resins (KU-2, AN-31, AV-17, Varian – AD, EDE-10P) after the contact with sulphate of iron(III) solutions at different conditions: type of solvent, temperature, air atmosphere. In special conditions the ultrafine superparamagnetic particles of Fe2O3 have been obtained.

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