Preparation and characterization of sol-gel derived 4%La2O 3- Al2O3 ceramic membrane on clay-based supports
Özet
In this work, γ-Al
2
O
3
membrane layer (4 wt % La
2
O
3
+ 96 % Al
2
O
) was coated on the
clay based porous support by using the sol-gel coating. The coating solution was prepared by using
boehmite (AlOOH), La-nitrate (La
2
(NO
3
)
3
.6H
2
O), PVA, distilled water and HNO
3
. The thickness of
the γ-Al
2
O
membrane layer was between 5-7 µm. Two unprocessed clay samples which were
supplied from Kutahya and Balıkesir regions, were used to produce supports for the membranes.
Porosities of the supports were varied from 25 to 40% depending on sintering temperatures. Mean
3
pore diameter of the supports were between 0.01-1µm. The mean pore diameter of 4wt%La
–
Al
2
O
3
membrane layer was around 11 nm and total pore area was 113 m
2
3
/ g at 1000
C for 1 hour.
0
2
O
3
Kaynak
Key Engineering MaterialsCilt
264-268Bağlantı
https://www.doi.org/10.4028/www.scientific.net/KEM.264-268.403https://hdl.handle.net/11630/7695
Koleksiyonlar
- Makaleler [36]
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