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Aluminum Open Cell Foams as Efficient Supports for Carbon Dioxide Methanation Catalysts: Pilot‐Scale Reaction Results
Author(s) -
Frey Myriam,
Bengaouer Alain,
Geffraye Genevieve,
Edouard David,
Roger AnneCécile
Publication year - 2017
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201700188
Subject(s) - methanation , catalysis , pressure drop , materials science , methane , chemical engineering , carbon dioxide , volume (thermodynamics) , drop (telecommunication) , aluminium , heat transfer , chemistry , composite material , thermodynamics , organic chemistry , computer science , engineering , telecommunications , physics
To control the highly exothermal nature of carbon dioxide methanation (Δ R H =−165 kJ mol −1 ), a reactor capable of efficiently evacuating the heat generated is essential. A pilot‐scale (≈75 cm 3 ) structured bed filled with an aluminum open cell foam (OCF) was chosen for the many advantages of this kind of reactor (high surface/volume ratio, low pressure drop, intensification of mass and heat transfer). A coating procedure for aluminum OCF was first developed. Different catalytic test conditions allowed a low temperature increase with a maximal value of 25 °C, as well as the influence of reaction temperature, pressure and flow rate on the axial temperature profile along the bed, to be shown. Finally, a comparison of the data collected herein for a powder fixed bed shows that the methane productivity obtained is similar to that obtained for the same catalyst in the powder form, but a much lower temperature increase due to the reaction and a lower pressure drop where clearly observed when using the aluminum OCF‐supported catalyst.