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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/1312

Title: Enhanced liquid spreading due to porosity
Authors: Maiti, R N
Khanna, R
Sen, P K
Nigam, K D P
Keywords: Trickle bed reactor
Wettability
Liquid spreading
Porous solids
Issue Date: 2004
Citation: Chemical Engineering Science, 59(13), 2817-2820
Abstract: A conceptual pore level model (Chem. Eng. Sci. 57 (2002) 3401) of spreading of liquid over internally wet porous particles is applied to explain reported rector level enhancement in wetting of trickle bed reactor (Ind. Eng. Chem. Res. 36 (1997) 5133). It is confirmed that a symbiotic relationship exists between internal and external wetting of porous particles whereby each enhances the other. Further, it is illustrated that liquid spreading in porous solids is driven more by porosity than by contact angle. A major implication of this phenomena is that liquid will spread more on less wettable (but porous) surfaces in comparison to more wettable (but nonporus) surfaces and a reinterpretation of experiments involving spreading of liquid over porous solids is required. On a large scenario, it is hoped that present exercise will be in important step towards explaining the complex reactor level macro phenomena by simple and conceptual pore level micro models.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/1312
Appears in Collections:Chemical Engineering

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