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| Content Provider | Springer Nature Link |
|---|---|
| Author | Prütz, W. A. |
| Copyright Year | 1997 |
| Abstract | HOCl reacts with Fe(CN) 6 4− to generate an intermediate, presumably FeCl(CN) 6 3− , which exhibits a weak absorption around 282 nm and decays simultaneously with the formation of Fe(CN) 6 3− . When decreasing the HOCl/Fe(CN) 6 4− concentration ratio fromR>1 toR<1, a drastic change in the kinetics of the oxidation is observed. Depending onR, the intermediate obviously oxidizes either Fe(CN) 6 4− or HOCl. AtR≫1, a further intermediate appears which also precedes the oxidation and absorbs strongly around 360 nm. The intermediates detected may represent reactive high oxidation states of iron (Fe(IV) and Fe(VI)). HOCl induced oxidation of Fe(CN) 6 4− is activated catalytically by Br−, I−, and N 3 − , obviously due to generation of stronger oxidants (HOBr, HOI, and ClN3), but oxidation is efficiently inhibited by CN− and NCS−.HOCl reagiert mit Fe(CN) 6 4− unter Bildung eines Intermediats, vermutlich FeCl(CN) 6 3− , das bei 282 nm eine schwache Absorption aufweist und parallel zum Erscheinen von Fe(CN) 6 3− verschwindet. Man beobachtet eine drastische Änderung in der Oxidationskinetik, wenn das HOCl/Fe(CN) 6 4− Konzentrationsverhältnis vonR>1 zuR<1 verändert wird. In Abhängigkeit vonR wird offenbar entweder Fe(CN) 6 4− oder HOCl durch das Intermediat oxidiert. FürR≫1 erscheint ein weiteres Intermediat mit einer starken Absorptionsbande bei 360 nm, das ebenfalls der Oxidation vorangeht. Bei den beobachteten Intermediaten handelt es sich vermutlich um reaktive höhere Oxidationsstufen des Eisens (Fe(IV) und Fe(VI)). Die HOCl-induzierte Oxidation von Fe(CN) 6 4− wird einerseits durch Br−, I− und N 3 − katalytish aktiviert (offenbar infolge der Bildung stärkerer Oxidantien wie HOBr, HOI und ClN3), andererseits durch CN− und NCS− effektiv inhibiert. |
| Starting Page | 737 |
| Ending Page | 748 |
| Page Count | 12 |
| File Format | |
| ISSN | 00269247 |
| Journal | Monatshefte für Chemie - Chemical Monthly |
| Volume Number | 128 |
| Issue Number | 8-9 |
| e-ISSN | 14344475 |
| Language | German |
| Publisher | Springer-Verlag |
| Publisher Date | 1997-01-01 |
| Publisher Place | Vienna |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Hypochlorous acid Ferrocyanide oxidation by HOCl Fenton reaction Halide radicals Chemistry/Food Science Analytical Chemistry Inorganic Chemistry Organic Chemistry Physical Chemistry Theoretical and Computational Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry |
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