| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Hansen, Kent Kammer
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (30/30 displayed)
- 2019Corrosion Study of Cr-Oxide Ceramics Using Rotating Ring Disk Electrode
- 2019Silver Modified Cathodes for Solid Oxide Fuel Cellscitations
- 2018Electrochemical removal of NOx using oxide-based electrodes - A reviewcitations
- 2018Novel Processing of Cathodes for Solid Oxide Fuel Cells
- 2017Determination of the Resistance of Cone-Shaped Solid Electrodescitations
- 2016Effect of pore formers on properties of tape cast porous sheets for electrochemical flue gas purificationcitations
- 2015Hybrid direct carbon fuel cell anode processes investigated using a 3-electrode half-cell setupcitations
- 2015In Situ Studies of Fe4+ Stability in β-Li3Fe2(PO4)3 Cathodes for Li Ion Batteriescitations
- 2015Catalytic Enhancement of Carbon Black and Coal-Fueled Hybrid Direct Carbon Fuel Cellscitations
- 2014Removal of NOx with Porous Cell Stacks with La0.85Sr0.15CoxMn1-xO3+δ-Ce0.9Gd0.1O1.95 Electrodes Infiltrated with BaOcitations
- 2014High Performance Infiltrated Backbones for Cathode-Supported SOFC's
- 2013A combined SEM, CV and EIS study of multi-layered porous ceramic reactors for flue gas purificationcitations
- 2013Fabrication and Characterization of multi-layer ceramics for electrochemical flue gas purificationcitations
- 2012Electrochemical reduction of NO<sub>x</sub>
- 2010Solid Oxide Fuel Cell
- 2010Characterization of (La1-xSrx)(s)MnO3 and Doped Ceria Composite Electrodes in NOx-Containing Atmosphere with Impedance Spectroscopycitations
- 2010Ceria and strontium titanate based electrodes
- 2010Sintering effect on material properties of electrochemical reactors used for removal of nitrogen oxides and soot particles emitted from diesel enginescitations
- 2010The Effect of a CGO Barrier Layer on the Performance of LSM/YSZ SOFC Cathodescitations
- 2009Processing and characterization of porous electrochemical cells for flue gas purificationcitations
- 2009Electrochemical characterization and redox behavior of Nb-doped SrTiO3citations
- 2008Niobium-doped strontium titanates as SOFC anodes
- 2008Strontium Titanate-based Composite Anodes for Solid Oxide Fuel Cellscitations
- 2008Defect and electrical transport properties of Nb-doped SrTiO3citations
- 2007Synthesis of Nb-doped SrTiO3 by a modified glycine-nitrate processcitations
- 2007Gd0.6Sr0.4Fe0.8Co0.2O3-δ: A novel type of SOFC cathodecitations
- 2006Studies of Fe-Co based perovskite cathodes with different A-site cationscitations
- 2005Charge disproportionation in (X0.6Sr0.4)0.99Fe0.8Co0.2O3-δ perovskites (X = La, Pr, Sm, Gd)citations
- 2005LSFM perovskites as cathodes for the electrochemical reduction of NOcitations
- 2001Perovskites as catalysts for the selective catalytic reduction of nitric oxide with propene: Relationship between solid state properties and catalytic activitycitations
Places of action
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thesis
Electrochemical reduction of NO<sub>x</sub>
Abstract
NO and NO2 (collectively referred to as NOx) are air pollutants, and the largest single contributor to NOx pollution is automotive exhaust. This study investigates electrochemical deNOx, a technology<br/>which aims to remove NOx from automotive diesel exhaust by electrochemical reduction of NOx to N2 and O2. The focus in this study is on improving the activity and selectivity of solid oxide electrodes for electrochemical deNOx by addition of NOx storage compounds to the electrodes. Two different composite electrodes, La0.85Sr0.15MnO3-δ-Ce0.9Gd0.1O1.95 (LSM15-CGO10) and<br/>La0.85Sr0.15FeO3-δ-Ce0.9Gd0.1O1.95 (LSF15-CGO10), have been investigated in combination with three different NOx storage compounds: BaO, K2O and MnOx. The main focus in the investigation has been on conversion measurements and electrochemical characterization, the latter by means of electrochemical impedance spectroscopy and cyclic voltammetry. In addition, infrared spectroscopy has been performed to study how NOx adsorption on the electrodes is affected by the presence of the aforementioned NOx storage compounds. Furthermore, non-tested and tested electrode microstructures have been thoroughly evaluated by scanning electron microscopy.<br/>The studies reveal addition of MnOx or K2O to the electrodes cause severe degradation problems, and addition of these compounds is thus unsuitable for electrode improvement. In contrast, addition of BaO to LSM15-CGO10 electrodes is shown to have a very positive impact on the NOx conversion. The increased NOx conversion, following the BaO addition, is attributed to a combination of 1) a decreased electrode polarisation resistance and 2) an altered NOx adsorption. The NOx conversion is observed to increase strongly with polarisation, and during 9 V polarisation of an 11-layer porous cell stack, 60% NOx conversion in a mixture of 1000 ppm NO and 10% O2 is achieved at 400 °C on entirely ceramic electrodes.<br/>This project thus demonstrates electrochemical deNOx is possible without the presence of noble metals at realistic operating conditions. However, several questions remain, among these how the BaO interacts with the solid oxide electrodes and how the electrochemical cell is optimally operated during electrochemical deNOx.