Fabrication on porous alumina tube by centrifugal molding

Chen, Chunhong; Takita, K.; Ishiguro, Satoshi; Honda, Sawao; Araki, Hideo

doi:10.1016/j.jeurceramsoc.2004.08.019

Cited by 44 publications

(26 citation statements)

References 17 publications

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“…The cell shape was distinctly different from those found with foam, poreforming agents and other freeze casting routes. [5][6][7][8][9][10][11][12][13] In especial, the microstructural features such as size and shape of cells and its distribution are highly homogeneous, compared to those of the specimens fabricated by other methods. The structure was observed throughout the porous body with the exception of the side and bottom surfaces, which were denser due to contact with the mold.…”

Section: Resultsmentioning

confidence: 99%

Fabrication and properties of ultra highly porous silicon carbide by the gelation–freezing method

Fukushima

Nakata

Zhou

et al. 2010

Journal of the European Ceramic Society

111

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Section: Resultsmentioning

confidence: 99%

Fabrication and properties of ultra highly porous silicon carbide by the gelation–freezing method

Fukushima

Nakata

Zhou

et al. 2010

Journal of the European Ceramic Society

111

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“…Consequently, we ruled any effects form a phase transformation of the plate-like kaolinite to the needle-like mullite phase on the pore characteristics of the diatomite-kaolin composite support layer with less kaolin added, such as 10 wt.% as already shown in Fig. 1(c) The flexural strength of typical ceramic microfiltration membranes based on alumina 34) or silicon carbide 35) is often above 50 MPa, and the flexural strengths of clay materials such as mullite, 36) kaolin, 37) and diatomite 38) is usually below 30 MPa. In this study, however, a flexural strength of 19.67 MPa was measured for the diatomite support layer sintered at 1200°C for 1 h with no added kaolin, and a flexural strength of 29.04 MPa was measured for the diatomite-kaolin composite support layers sintered at 1200°C for 1 h with the addition of 10 wt.% kaolin.…”

Section: Resultsmentioning

confidence: 96%

The preparation and characterizations of the diatomite-kaolin composite support layer for microfiltration

Lee

Song

2015

J. Ceram. Soc. Japan

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Recently, porous ceramic membranes have become a subject of significant interest due to their outstanding thermal and chemical stability. To reduce the high manufacturing costs of these porous ceramic membranes, recent research has focused on the utilization of low-cost natural materials. Therefore, in this paper, we report the results of an attempt to prepare a diatomite-kaolin composite support layer that could effectively filter the ISO 12103-1 A3 test dust while exhibiting acceptable water permeability. The pore characteristics of the specimens were studied by scanning electron micrography, mercury porosimetry, capillary flow porosimetry, and a dead-end microfiltration system with particle counters.

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“…Porosity has been recognized as an important pore structure parameter in membrane materials [11,12], so it is also necessary to investigate the relationship between porosity and average particle size. Through the analysis of experimental data, we find there is a similar trend for both porosity and average pore size.…”

Section: Porositymentioning

confidence: 99%

Pore structure prediction of coal-based microfiltration carbon membranes

2010

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This paper presents a method that is capable of predicting pore structure of coal-based microfiltration carbon membranes. The tubular carbon membranes are prepared from coal samples with different particle size and distribution by using the extrusion method. According to the relationship between properties of coal samples (particle size and distribution) and pore structure parameters of coal-based carbon membranes, the experiential equations of average pore size and porosity are concluded, and the change law of pore size distribution curve is also summarized. The results show pore structure properties of coal-based carbon membranes can be exactly predicted for different separation requirements by adjusting coal particle size and distribution, which allows us to minimize cost and time consuming experiments in the development of coal-based microfiltration membranes.prediction, pore structure, microfiltration, carbon membrane, coal Citation:Song C W, Wang T H, Qiu J S. Pore structure prediction of coal-based microfiltration carbon membranes.Membrane processes have been applied in various types of industries such as separation, concentration and purification in food technology, biotechnology and petrochemical processes. Carbon membranes are promising membrane separation materials because of high separation efficient, thermal stability and chemical stability [1,2]. Although carbon membranes have demonstrated more advantages in separation area than other membrane materials, up to now, the applications of carbon membranes still mainly focus on gas separation because of high cost and complicated preparation technology [3,4]. In previous paper, we described novel carbon membranes used for microfiltration. The carbon membranes are prepared from coal, a cheap carbonaceous source with abundant deposit in China, which has attracted much attention because of low cost and simple preparation technology in the past several years [5,6]. However, the potential of porous coal-based microfiltration carbon membranes have not been fully realized because of some unsolved problems, for example, their pore structure cannot be easily predicted for different separation requirements. As a matter of fact, this problem is extremely important for other porous membrane materials [7,8]. Therefore, we make great effort to study how to predict the pore structure of coalbased carbon membranes. In our works, we find that the pore structure of coal-based carbon membrane is formed by the evolution of binder and volatile in coal, and the most important controlling factors are particle size and its distribution of coal samples in the preparation of coal-based carbon membranes. Therefore, we try to correlate the pore structure properties of coal-based carbon membranes with the particle size and its distribution of coal samples, and further provide a new method for the prediction of pore structure of coal-based microfiltration carbon membranes. The paper mainly describes preliminary research work from this point of view. According to a large amount of expe...

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Fabrication on porous alumina tube by centrifugal molding

Cited by 44 publications

References 17 publications

Fabrication and properties of ultra highly porous silicon carbide by the gelation–freezing method

Fabrication and properties of ultra highly porous silicon carbide by the gelation–freezing method

The preparation and characterizations of the diatomite-kaolin composite support layer for microfiltration

Pore structure prediction of coal-based microfiltration carbon membranes

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