Production of ceramic foam filters for molten metal filtration using expanded polystyrene

Taslicukur, Zeynep; Balaban, C.; Kuskonmaz, Nilgun

doi:10.1016/j.jeurceramsoc.2006.04.129

Cited by 86 publications

(40 citation statements)

References 2 publications

(2 reference statements)

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“…This material presents high thermal and chemical resistance, thermal conductivity, thermal shock resistance, and mechanical strength, as studied by different authors [9,10]. These properties can lead to important improvements with respect to conventional supports used in catalytic combustion, and particularly reverse-flow reactors, where the movement of the high temperature plateau along the reactor requires a bed material with high thermal shock resistance.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the use of ceramic foams as catalyst supports for reverse-flow combustors

Thompson

Marín

Dı́ez

et al. 2013

Chemical Engineering Journal

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Section: Introductionmentioning

confidence: 99%

Evaluation of the use of ceramic foams as catalyst supports for reverse-flow combustors

Thompson

Marín

Dı́ez

et al. 2013

Chemical Engineering Journal

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“…Due to properties resulting from the open cell-structure like high porosity, high specific surface area and tortuosity of flow paths [1] they are used as filters for liquid metals [2] or for diesel particulate filters, [3] as catalyst supports, [4] and also as scaffolds for bone replacement. [5] One possibility to expand the field of applications of the cellular ceramic materials and to adjust their properties to specific applications is the functionalization or tailoring of their surface characteristics, for example, by applying coatings.…”

Section: Introductionmentioning

confidence: 99%

Tailored Surface Properties of Ceramic Foams for Liquid Multiphase Reactions

et al. 2017

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Open cellular ceramic foams are prepared using the replica method. In a second step, these foams are coated with a pre-ceramic or polymer-derived ceramic coating, respectively. Polymer-to-ceramic transformation is studied by SEM with respect to the microstructure, functional groups are characterized by Raman microscopy, density and porosity are determined by pycnometer measurements as well as the surface free energy by means of contact angle measurements. By pyrolysis at different temperatures between 403 and 1273 K, the surface wettability is adjusted in a wide range from hydrophilic to hydrophobic due to the release of organic groups from the pre-ceramic polymers in terms of polymer-toceramic transformation. Coated foams are tested in a new potential application: as reactor internals to increase the liquid-liquid interface area in a homogeneously catalyzed multiphase system. As model reaction, a reactive extraction of an organic dye was used and the influence of the surface energy of the foam on the phase dispersion/reaction rate is discussed. The coated foams are able to increase the reaction rate to an extent depending on the surface wettability.

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“…On the other hand, macroporous ceramics have been widely utilized, where porosities are positively took into account, 1)5) in numerous industrial fields such as filtration, diffuser, catalyst support, fuel cell, bioimplant and thermal insulator as well as refractory. 6)12) The macro-porous ceramics have attracted a great deal of attention, due to the synergy effects of intrinsic properties of ceramics themselves and properties of pores dispersed into ceramics, in which ceramics materials possess thermal and chemical stability, good biocompatibility and high specific strength, and the porosities can provide lowered thermal conductivity, enlarged specific surface area and controlled permeability as well as lowered dielectric constant. A great deal of studies has tried to tailor pore architecture like pore volume (porosity), pore size, its distribution, pore shape, pore location, pore interconnection, pore orientation and the surface morphology of pore.…”

Section: Introductionmentioning

confidence: 99%

Microstructural control of macroporous silicon carbide

Fukushima

2013

J. Ceram. Soc. Japan

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Wide range of porosity in 3090 vol % could be created into silicon carbide by employing carefully selected manufacturing methods. Two fabrication methods have been proposed and reviewed in the present paper: (1) partial sintering of submicrometersized silicon carbide particle with a suitable amount of sintering additive, acting as an inhibition of grain growth during sintering; (2) the use of ice crystals, as sacrificial pore formers, formed by freezing a silicon carbide particle dispersed gel body, leading to highly porous silicon carbide after sublimating ice crystals by vacuum drying and subsequently sintering. Depending on the processing route adopted, average pore size could be modulated in the range from 0.03 to 0.70¯m and 30 to 150¯m by partial sintering and gelation freezing, respectively. All fabrication methods proposed are simple, economical and versatile to produce macroporous body with tailored pore architecture and engineering porosity.

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Production of ceramic foam filters for molten metal filtration using expanded polystyrene

Cited by 86 publications

References 2 publications

Evaluation of the use of ceramic foams as catalyst supports for reverse-flow combustors

Evaluation of the use of ceramic foams as catalyst supports for reverse-flow combustors

Tailored Surface Properties of Ceramic Foams for Liquid Multiphase Reactions

Microstructural control of macroporous silicon carbide

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