| Titre : |
Degradation of CI Reactive Red 141 by heterogeneous Fenton-like process over iron-containing ZSM-5 zeolites |
| Type de document : |
texte imprimé |
| Auteurs : |
Yadigar C. Yaman, Auteur ; Gönül Gündüz, Auteur ; Meral Dükkanci, Auteur |
| Année de publication : |
2013 |
| Article en page(s) : |
69-75 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Catalyseurs
Colorants -- Détérioration
Colorants -- Oxydation
Colorants réactifs
Fenton, Réaction de
Fer
Peroxyde d'hydrogèneLe peroxyde d'hydrogène (H2O2), communément appelé eau oxygénée ou encore perhydrol (appellation industrielle), est un composé chimique liquide et visqueux, aux puissantes propriétés oxydantes (il est aussi réducteur). C'est donc un agent blanchissant efficace qui sert de désinfectant et (à haute concentration) d'oxydant ou monergol dans les fusées spatiales.
Zéolites
|
| Index. décimale : |
667.3 Teinture et impression des tissus |
| Résumé : |
The Fenton-like oxidation of CI Reactive Red 141 was investigated over iron-containing ZSM-5 zeolites. Iron was loaded by ion exchange or through hydrothermal synthesis. The oxidation process was carried out in an aqueous solution using hydrogen peroxide as the oxidant. The catalyst prepared by ion exchange with a silicon/aluminium ratio of 42 zeolite showed the highest activity (97% decolorisation and 52% chemical oxygen demand reduction at an initial pH of 3.5) after an oxidation duration of 2 h. The chemical oxygen demand reduction increased with the increasing amount of iron loaded to the zeolite. The FeZSM-5 catalyst, prepared by hydrothermal synthesis in the presence of oxalic acid, showed very good activity in terms of mineralisation (99% of chemical oxygen demand reduction). The iron leaching was noticeably low (below the European Union directives of 2 mg dm−3) for the above-mentioned catalysts. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Catalyst preparation - Catalyst characterisation - Catalytic activity tests
- RESULTS AND DISCUSSION : X-ray diffraction studies - Scanning electron microscopy studies - FTIR studies - Nitrogen adsorption studies - Chemical composition of the ZSM-5 samples - Temperature-programmed reduction with hydrogen studies - Heterogeneous Fenton-like oxidation studies of CI Reactive Red 141 over the catalysts prepared |
| DOI : |
10.1111/cote.12001 |
| En ligne : |
http://onlinelibrary.wiley.com/doi/10.1111/cote.12001/pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17189 |
in COLORATION TECHNOLOGY > Vol. 129, N° 1 (02/2013) . - 69-75
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Degradation of CI Reactive Red 141 by heterogeneous Fenton-like process over iron-containing ZSM-5 zeolites in COLORATION TECHNOLOGY, Vol. 129, N° 1 (02/2013)
