Synthesis and characterizations of zirconia nanofiltration membranes
- Ecole National Superieure de Chimie, Montpellier (France); and others
In recent years inorganic membranes are being considered in microfiltration and ultrafiltration applications. A significant number of commercial processes utilizing inorganic membranes already exist. Nanofiltration has recently arisen as a new technique with a high application potential in the separation of organics and multivalent ions from water and effluents. Presently, polymer nanofiltration membranes are commercialized with a limited temperature and pH application range. New developments are expected with the aim of providing ceramic nanofilters suitable for harsh working conditions at high pH and high temperature, as well as with organic solvents. Here, the authors report a well adapted method based on the latest developments in sol-gel chemistry in order to prepare a microporous zirconia membrane. Zirconium propoxide used as a ceramic precursor is reacted with acetylacetone in an organic solvent. The use of acetylacetone ligands allows the control of particle growth along the process Loading a nanophase ceramic exhibiting connected micropores with pore diameter in 1 to 2 nm range. A tetragonal zirconia layer coated on a KERASEP{trademark} multichannel has been obtained at 400{degrees}C with pore diameter centered on 1 nm.
- OSTI ID:
- 213094
- Report Number(s):
- CONF-940713-; TRN: 96:001036-0011
- Resource Relation:
- Conference: 3. international conference on inorganic membranes, Worcester, MA (United States), 10-14 Jul 1994; Other Information: PBD: 1994; Related Information: Is Part Of ICIM{sub 3} 1994: Third international conference on inorganic membranes. Final program; PB: 148 p.
- Country of Publication:
- United States
- Language:
- English
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