| Titre : | Use of gas diffusion electrode for the in situ generation of hydrogen peroxide in an electrochemical flow - by reactor (2012) |
| Auteurs : | Rafael M. Reis, Auteur ; André A. G. F. Beati, Auteur ; Robson S. Rocha, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 51 N° 2, Janvier 2012) |
| Article en page(s) : | pp. 649-654 |
| Note générale : | Chimie industrielle |
| Langues : | Anglais |
| Tags : | Reactor Hydrogen production In situ Electrodes Gaseous diffusion |
| Résumé : | Hydrogen peroxide is a powerful oxidant that finds application in several areas, but most particularly in the treatment of industrial wastewaters. The aim of the present study was to investigate the effects of applied potential and electrolyte flow conditions on the in situ generation of hydrogen peroxide in an electrochemical flow-by reactor with a gas diffusion electrode (GDE). The electrolyses were performed in an aqueous acidic medium using a GDE constructed with conductive black graphite and polytetrafluoroethylene (80:20 w/w). Under laminar flow conditions (flow rate = 50 L/h), hydrogen peroxide was formed in a maximum yield of414mg/L after 2 h at -2.25 Vvs Pt //Ag/AgCl (global rate constant = 3.1 mg/(L min); energy consumption = 22.1 kWh/kg). Under turbulent flow (300 L/h), the maximum yield obtained was 294 mg/L after 2 h at -1.75 V vs Pt//Ag/AgCl (global rate constant = 2.5 mg/(L min); energy consumption =30.1 kWh/kg). |
| DEWEY : | 660 |
| ISSN : | 0888-5885 |
| En ligne : | http://cat.inist.fr/?aModele=afficheN&cpsidt=25476395 |
