Corrosion resistance characterization of porous alumina membrane supports

Journal Article · Fri Apr 15 00:00:00 EDT 2011 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2011.01.012· OSTI ID:22063674

Bin, Lin ^[1]; Jianer, Zhou ^[2]; Xiaozhen, Zhang ^[1]; Yihan, Ling; Xingqin, Liu; Guangyao, Meng ^[1]; Hampshire, Stuart ^[3]

---

1. USTC Lab for Solid State Chemistry and Inorganic Membranes, Department of Materials Science and Engineering, University of Science and Technology of China (USTC) (China)
2. Key Lab of Jiangxi Universities for Inorganic Membranes, National Engineering Research Center for Domestic and Building Ceramics, Jingdezhen Ceramic University (JCU) (China)
3. Materials and Surface Science Institute (MSSI), University of Limerick, Limerick (Ireland)

Tubular porous alumina ceramic membrane supports were fabricated by an extrusion-drying-sintering process and then characterized in detail in terms of corrosion resistance in both H{sub 2}SO{sub 4} and NaOH aqueous solutions. Variations in the properties of the alumina supports such as mass loss percent, mechanical strength, open porosity and pore size distribution were studied before and after corrosion under different conditions. In addition, the microstructures were analyzed using scanning electron microscopy, energy dispersive spectroscopy and X-ray diffraction before and after corrosion. The fabricated porous alumina supports offer possibilities for some potential applications as micro-filtration or ultra-filtration membrane supports, as well as in the pre-treatment of strongly acidic industrial waste-liquids. - Research highlights: {yields} Porous alumina membrane supports fabricated by extrusion-drying-sintering process. {yields} Corrosion resistance in 20 wt.% H{sub 2}SO{sub 4} and 1, 5, 10 wt.% NaOH aqueous solutions. {yields} Rapid mass loss and loss of flexural strength occurred in hot NaOH solution. {yields} Resistant to strong acid corrosion with low mass loss, low flexural strength loss. {yields} Porous alumina supports have potential for treatment of strong acid waste liquids.

• OSTI ID: 22063674
• Journal Information: Materials Characterization, Vol. 62, Issue 4; Other Information: Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM OXIDES
AQUEOUS SOLUTIONS
CERAMICS
CORROSION
CORROSION RESISTANCE
EXTRUSION
FILTRATION
FLEXURAL STRENGTH
MICROSTRUCTURE
POROSITY
POROUS MATERIALS
SCANNING ELECTRON MICROSCOPY
SINTERING
SODIUM HYDROXIDES
SULFURIC ACID
SUPPORTS
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY