Fabricating Porous Ceramics

Liu, P.S.; Chen, G.F.

doi:10.1016/b978-0-12-407788-1.00005-8

Cited by 18 publications

(7 citation statements)

References 51 publications

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“…For high-temperature applications, the materials need the properties such as high mechanical strength, thermal, and corrosion resistance (Lal et al 2020;Uthaman et al 2020). Porous SiC ceramics contains all these properties and are broadly applied as structural materials in high-temperature applications such as filters and carriers for catalyst (Liu and Chen 2014;Sieber et al 2002). Nowadays, the production of porous SiC ceramics by transmitting of biological organic materials as wood is popular.…”

Section: Wood Ceramicsmentioning

confidence: 99%

Porous Ceramic Properties and Its Different Fabrication Process

Uthaman¹,

Lal²,

Thomas³

2021

Advanced Functional Porous Materials

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The unique compositions and outstanding properties of porous ceramic products make them useful in various application fields such as high-temperature thermal insulation, filtration, and catalytic reactions. This chapter aims to review the porous ceramics properties, classifications, and the different types of fabrication methods of porous ceramics. The readers can get a profound view of porous ceramic materials and their different fabrication methods such as particle stacking sintering, the addition of foaming, gel casting, sol-gel process, polymeric sponge, and freezedrying method. The fabrication process of porous ceramics can influence the quality of the final products.Recently, the utilization of porous ceramics has become great consideration due to its outstanding mechanical strength, chemical, abrasion resistance, etc. (Eom et al. 2013;Colombo 2008). Some benefits of porous ceramics are illustrated in Fig. 1. The broadly considering porous ceramics are silica, alumina, titania, magnesium oxide, zirconia, etc. (Colombo 2002). The pore structure, morphology, pore size, pore wall, porosity, the density of the pore strut, and interconnection of pores have a significant role in the properties of porous ceramics (Sakka 2005; Liu and Chen 2014). The particle size distribution of ceramic powders, the concentration of binder, types of binders, fabrication, etc., can influence the porosity and pore size (Ohji and Fukushima 2012). Typically, the particle size of raw ceramic powder is about two to five times greater than pores, for acquiring the needed pore size. And, the greatest service temperature of porous ceramics is around 1000-2000 °C. The pores are

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Section: Wood Ceramicsmentioning

confidence: 99%

Porous Ceramic Properties and Its Different Fabrication Process

Uthaman¹,

Lal²,

Thomas³

2021

Advanced Functional Porous Materials

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“…Ceramics are the most frequently used materials for manufacturing monolith. Different ceramic materials such as aluminium titanate (Al2TiO5), calcium titanate (CaTiO3) and silicon carbide (SiC) have been used [18], yet cordierite, with the chemical composition of 2MgO.2Al2O3.5SiO2, has become the material of choice owing to its relatively low thermal expansion coefficient and high thermal shock resistance [19].…”

Section: Introductionmentioning

confidence: 99%

3D printed catalytic converters with enhanced activity for low-temperature methane oxidation in dual-fuel engines

Hajimirzaee

Doyle

2020

Fuel

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Catalytic converters with non-linear channel structures were prepared using 3D printing and tested in the oxidation of methane in a simulated dual-fuel engine exhaust stream. The design used a simple repeating angular offset between adjacent layers, which was sufficient to introduce complexity with minimal software programming. All 3D printed substrates were mechanically stable and, following washcoating with a composite catalyst, demonstrated higher catalytic activity in methane oxidation than a commercial honeycomb substrate.The methane conversion at e.g. 510 °C was 12.6% on the commercial sample, 72.6% for 90 °, 80.1% for both 30 ° and 45 °, and 89.6 % for the 60 ° oriented structures. This enhancement is attributed to the increased turbulence/mass transfer and surface area than are possible using conventional straight-channelled substrates.Computational fluid dynamics (CFD) analysis confirmed that the higher methane conversion over 3D printed substrates is due (at least partially) to its higher turbulence kinetic energy. Backpressures over the 3D printed structures were also experimentally measured and compared with the conventional honeycomb monolith.

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“…The solid content of coating slurry and frame applicator gap depth are two major factors affecting the thickness of the coating layer and the structural uniformity. 58 Since the applicator gap depth was a constant factor in this study, any changes in the solid content of the coatings can result in altered coating weight. As shown in Table 1, there was no significant difference in the solid content of the samples even when PE-wax was added into the coating formulation.…”

Section: Solid Content and Viscosity Of Coatingsmentioning

confidence: 94%

Effect of polyethylene wax/soy protein-based dispersion barrier coating on the physical, mechanical, and barrier characteristics of paperboards

et al. 2020

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Application of barrier dispersion coatings on the paperboards, which must have proper moisture and grease resistance for food applications, has always been an interesting subject for the packaging industry. In this study, paperboards were coated with a novel dispersion barrier coating prepared through mixing soy protein isolate (SPI) and polyethylene wax (PE-wax). Different characterization methods were used to study the effects of coating and its composition on the physical, mechanical, and barrier characteristics of paperboards. The results indicated that the incorporation of PE-wax into the coating formulation caused significant reduction of the viscosity of coating slurries. It had no effect on the coating weight of the samples but increased the thickness of the coated paperboards as compared with those coated with SPI only. The increase of the wax content led to a reduction of 5 to 16% in the tensile strength values in comparison with the uncoated paperboards. Barrier characteristics, i.e. water vapor permeability (WVP), surface wettability, and water resistance improved by adding PE-wax. In addition, it was found that there was a critical level for the addition of PE-wax, 50% of SPI, as no oil migration was detected when the paperboards coated with SPI coatings contained less than 50% PE-wax.

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Fabricating Porous Ceramics

Cited by 18 publications

References 51 publications

Porous Ceramic Properties and Its Different Fabrication Process

Porous Ceramic Properties and Its Different Fabrication Process

3D printed catalytic converters with enhanced activity for low-temperature methane oxidation in dual-fuel engines

Effect of polyethylene wax/soy protein-based dispersion barrier coating on the physical, mechanical, and barrier characteristics of paperboards

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