کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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150161 | 456445 | 2012 | 6 صفحه PDF | دانلود رایگان |
Open-cell foams are a promising new support for gas–liquid contacting and heterogeneous catalysis. Using the Piston-Dispersion-Exchange model, axial dispersion and dynamic–static liquid mass transfer coefficient are estimated from residence time distribution responses measured under co-current down flow configuration.The specific morphological parameters and the high porosity involved within open-cell foams result in low Bodenstein numbers (0.05 < Bo < 0.2 for 2.5 < Re < 20) in comparison to conventional packed beds (0.2 < Bo < 0.7 for 5 < Re < 23). Furthermore, open-cell foam improves liquid mass transfer coefficient between the dynamic and the static zones under trickle flow conditions.
► Axial dispersion and liquid mass transfer in SiC foam beds are studied.
► A low Bodenstein number (Bo < 0.2) in comparison to particles bed (Bo > 0.2) is obtained.
► SiC foam with a large specific surface area improves the liquid mass transfer.
Journal: Chemical Engineering Journal - Volumes 185–186, 15 March 2012, Pages 294–299