Multi-scale modelling and measurements of diffusion through porous catalytic coatings: An application to exhaust gas oxidation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F12%3A43893728" target="_blank" >RIV/60461373:22340/12:43893728 - isvavai.cz</a>
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S0920586112002143" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0920586112002143</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cattod.2012.03.049" target="_blank" >10.1016/j.cattod.2012.03.049</a>

Result language
angličtina
Original language name
Multi-scale modelling and measurements of diffusion through porous catalytic coatings: An application to exhaust gas oxidation
Original language description
Novel experimental and computational methods to investigate diffusion in catalytic coatings are presented and demonstrated with Pt/gama-Al2O3 oxidation catalyst. The catalytic layer with defined particle and pore size distributions is coated on metal plates and subsequently overlaid by an inert layer acting as an additional diffusion resistance. The samples are tested in a lab reactor for CO oxidation and diffusion-limited regime is reached above the light-off temperature. Comparisons of the results obtained with the samples coated by active layer only and the samples additionally coated by an inert layer reveal the extent of diffusion limitations. The computational part is based on digital reconstruction of the porous layer as a 3D matrix; this is achieved using macroporosity obtained from SEM cross-section images, and measured particle size distributions. Reaction and diffusion are then simulated within a small layer section and the spatially averaged results are employed in the full
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CI - Industrial chemistry and chemical engineering
OECD FORD branch
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Project
<a href="/en/project/GAP106%2F10%2F1568" target="_blank" >GAP106/10/1568: Optimization of transport and catalytic properties of porous materials on micro- and nano-scale using 3D digital reconstruction methods</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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