Ceramic membrane separation technique for washing nano-sized ceramic powder precursors--颗粒学报PARTICUOLOGY

Dong, Q., Liu, X., & Zhang, T. (2011). Ceramic membrane separation technique for washing nano-sized ceramic powder precursors. Particuology, 9(5), 492–496. https://doi.org/10.1016/j.partic.2011.02.007

Ceramic membrane separation technique for washing nano-sized ceramic powder precursors

Qiang Dong ^a *, Xingqin Liu ^b, Tianshu Zhang ^c

a Department of Chemistry & Materials Engineering, Hefei University, Hefei 230022, China
b USTC Lab for Solid State Chemistry and Inorganic Membranes, Department of Materials Science & Engineering, University of Science & Technology of China, Hefei 230026, China
c School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia

10.1016/j.partic.2011.02.007

Volume 9, Issue 5, October 2011, Pages 492-496

Received 24 August 2009, Revised 20 January 2011, Accepted 12 February 2011, Available online 10 August 2011.

E-mail: qdong@hfuu.edu.cn

Highlights

Abstract

Washing using ceramic micro-filtration membranes was studied in the preparation of nano-sized TiO₂ and Al₂O₃ powder precursors obtained by wet chemical methods. The key parameters for the washing process, such as operation pressure, cross-flow velocity, and slurry concentration, were examined and optimized. The shape and size of particles influenced the structure of the filter cake, leading to different permeation flux for different systems. The results demonstrated that washing using ceramic membranes is superior to the traditional plate-and-frame filtration and could be considered an advanced technique for ultra-fine powder preparation by wet-chemical method.

Graphical abstract

Keywords

Nano-sized ceramic powder; Wet-chemical method; Ceramic membrane; Washing; Filtration

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