Physicochemical properties and catalytic activity of M center dot EDTA complexes in the oxidation of hydrogen sulfide

Authors
Potapova, LL Volkovinskaya, TV Egiazarov, YG
Citation
Ll. Potapova et al., Physicochemical properties and catalytic activity of M center dot EDTA complexes in the oxidation of hydrogen sulfide, RUSS J PH C, 74, 2000, pp. S564-S567
Citations number
14
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY
ISSN journal
00360244 → ACNP
Volume
74
Year of publication
2000
Supplement
3
Pages
S564 - S567
Database
ISI
SICI code
0036-0244(2000)74:<S564:PPACAO>2.0.ZU;2-S
Abstract
The catalytic activity of M.EDTA complexes (M = Fe, Mn, V) fixed on a fibro us ion exchanger in the oxidation of H2S to elementary sulfur was studied. IR spectra for the complexonate solutions were obtained. The physicochemica l properties of the M.EDTA complexes were considered. It was concluded that the high activity of the Fe.EDTA complex is due to optimal thermodynamic p roperties of the Fe3+.L/Fe2+.L pair and the formation of the active interme diate complex HS-...Fe.EDTA...O-2, which provides a high rate of electron t ransfer.