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Hydrodynamics of ceramic sponges in countercurrent flow / Julia Grosse in Industrial & engineering chemistry research, Vol. 50 N° 8 (Avril 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 8 (Avril 2011) . - pp. 4631–4640 Titre : Hydrodynamics of ceramic sponges in countercurrent flow Type de document : texte imprimé Auteurs : Julia Grosse, Auteur ; Matthias Kind, Auteur Année de publication : 2011 Article en page(s) : pp. 4631–4640 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Hydrodynamics  Ceramic  Sponges Résumé : A broad range of ceramic sponge types regarding porosity, pore size, and material was investigated experimentally in order to determine liquid holdup as well as wet pressure drop and operation limits. The observed values for the holdup are higher than those for state-of-the-art random and structured packings. The onset of flooding occurs at relatively low gas loads, but the operation range can be significantly enlarged by using a sponge with a cone-shaped bottom as drainage enhancer. Effects of stacking can be shown especially for the static liquid holdup. Possible applications are, for example, reactive rectification, where the continuous solid and the ceramic material as catalyst carrier are of advantage. The experimental values are compared with established correlations from the literature for conventional column internals. In general, those are able to describe the behavior of sponge structures, although the deviations are bigger than observed for other column internals. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101514w [article] Hydrodynamics of ceramic sponges in countercurrent flow [texte imprimé] / Julia Grosse, Auteur ; Matthias Kind, Auteur . - 2011 . - pp. 4631–4640. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 8 (Avril 2011) . - pp. 4631–4640 Mots-clés : Hydrodynamics  Ceramic  Sponges Résumé : A broad range of ceramic sponge types regarding porosity, pore size, and material was investigated experimentally in order to determine liquid holdup as well as wet pressure drop and operation limits. The observed values for the holdup are higher than those for state-of-the-art random and structured packings. The onset of flooding occurs at relatively low gas loads, but the operation range can be significantly enlarged by using a sponge with a cone-shaped bottom as drainage enhancer. Effects of stacking can be shown especially for the static liquid holdup. Possible applications are, for example, reactive rectification, where the continuous solid and the ceramic material as catalyst carrier are of advantage. The experimental values are compared with established correlations from the literature for conventional column internals. In general, those are able to describe the behavior of sponge structures, although the deviations are bigger than observed for other column internals. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101514w

Morphological characterization of ceramic sponges for applications in chemical engineeringc / Julia Grosse in Industrial & engineering chemistry research, Vol. 48 N° 23 (Décembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 23 (Décembre 2009) . - pp. 10395–10401 Titre : Morphological characterization of ceramic sponges for applications in chemical engineeringc Type de document : texte imprimé Auteurs : Julia Grosse, Auteur ; Benjamin Dietrich, Auteur ; Gerardo Incera Garrido, Auteur Année de publication : 2010 Article en page(s) : pp. 10395–10401 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Morphological--Characterization--Ceramic  Sponges--Applications--Chemical  Engineering Résumé : An extensive study on morphological parameters of ceramic sponge structures of different material, porosity, and pores per linear inch (ppi) number was performed. Volume image analyses of magnetic resonance imaging (MRI) and X-ray tomography (CT) measurements were carried out to determine experimentally the geometric specific surface area of the structures. Furthermore, face and strut diameters, porosities, and densities were assessed through conventional methods including optical microscopy, mercury porosimetry, and helium pycnometry. The resulting data were used to evaluate morphological models representing the irregular strut network by packings of regular polyhedra. On the basis of an adapted Weaire−Phelan model, a novel correlation was developed that enables the calculation of the specific surface area of sponges with high accuracy. The input parameters for this correlation are easily accessible by standard microscopy and porosimetry measurements. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900651c [article] Morphological characterization of ceramic sponges for applications in chemical engineeringc [texte imprimé] / Julia Grosse, Auteur ; Benjamin Dietrich, Auteur ; Gerardo Incera Garrido, Auteur . - 2010 . - pp. 10395–10401. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 23 (Décembre 2009) . - pp. 10395–10401 Mots-clés : Morphological--Characterization--Ceramic  Sponges--Applications--Chemical  Engineering Résumé : An extensive study on morphological parameters of ceramic sponge structures of different material, porosity, and pores per linear inch (ppi) number was performed. Volume image analyses of magnetic resonance imaging (MRI) and X-ray tomography (CT) measurements were carried out to determine experimentally the geometric specific surface area of the structures. Furthermore, face and strut diameters, porosities, and densities were assessed through conventional methods including optical microscopy, mercury porosimetry, and helium pycnometry. The resulting data were used to evaluate morphological models representing the irregular strut network by packings of regular polyhedra. On the basis of an adapted Weaire−Phelan model, a novel correlation was developed that enables the calculation of the specific surface area of sponges with high accuracy. The input parameters for this correlation are easily accessible by standard microscopy and porosimetry measurements. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900651c