Ecole Europeenne de Chimie

Strasbourg, France

Ecole Europeenne de Chimie

Strasbourg, France
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Kouame N.A.,University of Lorraine | Robert D.,University of Lorraine | Keller V.,Ecole Europeenne de Chimie | Keller N.,Ecole Europeenne de Chimie | And 2 more authors.
Environmental Science and Pollution Research | Year: 2012

Introduction: This study of photocatalytic degradation of wastewater was carried out in alveolar cell β-SiC foam-structured photocatalytic reactors working in a recirculation mode. The immobilization of TiO2 on β-SiC foams was efficiently obtained through a sol-gel technique in acidic conditions. Discussion: In order to optimize degradation yields obtained by the foam-structured prototype reactor for the photocatalytic water treatment, the operating conditions of the photoreactor have been investigated and the efficiency of the process was evaluated by measuring the photocatalytic degradation of Diuron (3-(3,4-dichlorophenyl)-1,1-dimethyl-urea)) under UV irradiation. Kinetic studies were carried out by investigating the influence of different parameters controlling the reaction (TiO2 loading and β-SiC foam cell size). The ageing of TiO2/β-SiC foam photocatalytic materials and the mineralization (TOC, Cl-, NO3- and NH4+) of Diuron were investigated. © 2012 Springer-Verlag.

Kouame N.A.,Antenne de Saint Avold | Kouame N.A.,CNRS The Institute of Chemistry and Processes for Energy, Environment and Health | Robert D.,Antenne de Saint Avold | Robert D.,CNRS The Institute of Chemistry and Processes for Energy, Environment and Health | And 6 more authors.
Catalysis Today | Year: 2011

In this study we used a medium sized surface area of β-SiC foam, being a three-dimensional medium for the preparation of photocatalytic materials. The study's objective was to optimize the deposition of TiO2 photocatalyst on the β-SiC Foam by using the sol-gel process. To this end, various parameters were applied via varying temperatures of the thermal treatment; variation in the ratio of acetic acid/Ti of sol-gel; and differing level of oxidation of the β-SiC support. The relative performances of the various prepared materials were evaluated against their ability to degrade an aqueous solution of Diuron (herbicide) under UV irradiation. As an outcome, we obtained an efficient TiO2/β-SiC material for photocatalytic degradation of organic compounds in water. © 2010 Elsevier B.V. All rights reserved.

Montinaro D.,SOFCPOWER Spa | Bertoldi M.,SOFCPOWER Spa | Modena S.,SOFCPOWER Spa | Contino A.,SOFCPOWER Spa | And 3 more authors.
EFC 2011 - Proceedings of the 4th European Fuel Cell Piero Lunghi Conference and Exhibition | Year: 2011

The present work is focused on the application of non-conventional materials and processes for anode supported SOFCs, with the aim to obtain good electrochemical performances and durability while considering competitive industrial manufacturing methods. Particularly, alternative fabrication techniques have been developed for the production of dense protective coatings and high performing Ceria-based barrier layers. High oxygen-conducting materials, such as Scandia-Doped Zirconia, were also considered in order to improve the electrochemical performances at low temperatures.A special attention was addressed to investigate the interfaces between the different layers, in order to minimize solid state reactions which could lead to the growth of insulating phases. These improvements resulted in a considerable decrease of cell and stack ohmic losses, providing a very promising electrochemical behavior of NiO/YSZ anode supported SOFC at temperatures comprised between 600 and 650°C.

Montinaro D.,SOFCpower S.p.A | Contino A.R.,SOFCpower S.p.A | Dellai A.,SOFCpower S.p.A | Rolland M.,Ecole Europeenne de Chimie
EFC 2013 - Proceedings of the 5th European Fuel Cell Piero Lunghi Conference | Year: 2013

In this study, Anode Supported Fuel Cells have been electrochemically tested by varying testing conditions (gas partial pressure, occurrence of H2S impurities, temperature), as well as cells materials and microstructure (current collecting layer, diffusion barrier layer). The comparison of the different Nyquist plots, Bode plots and fitting results obtained allowed us to separate the different contributions and attribute them to the anode or the cathode. Copyright © 2013 Delta Energy and Environment.

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