Alumina-supported Rare Earth −Zr Complex Oxide
[Applied Field]
- Catalyst for cleaning exhaust gases of automotives and motorcycles
- Cleaning of industrial organic exhaust gases and indoor air
- Catalyst for nature gases combustion
- Catalytic decomposition in fluidized-bed in oil refining industry
[Product Properties]
- Being carried by γ-Al2O3 can accelerate the dispersing of rare earth-Zr complex oxide in the carrier and keep the stability of the specific surface area at high temperature. Therefore, it improves the activity and lifetime of the catalyst materials
- The crushing and mixing of γ-Al2O3 and rare-earth-Zr compound oxide can improve the mixture uniformity.
- Slurring the products when using, it is convenient for the users.
[Technology Parameters]
|
Model
|
RC − 35A
|
|
Composition
|
RC35,γ-Al2O3
|
|
Physical Properties
|
Medium Diameter D50 (μm)
|
1.0 − 2.0
|
|
Bulk density (g/cm3)
|
1.0 − 1.5
|
|
Fresh Specific Surface Area (m2/g)
|
150 − 250
|
|
Aging Specific Surface Area (1000ºC 4hr m2/g)
|
50 − 70
|
|
Chemical Properties
|
CeO2(%)
|
30 ± 0.5
|
|
ZrO2(%)
|
60 ± 0.5
|
|
La2O3(%)
|
5 ± 0.5
|
|
Y2O3(%)
|
5 ± 0.5
|
|
S(%)
|
≤ 0.05
|
|
P(%)
|
≤ 0.03
|
|
Cl(%)
|
≤ 0.02
|
|
SiO2(%)
|
≤ 0.1
|
|
CaO(%)
|
≤ 0.05
|
|
Fe2O3(%)
|
≤ 0.05
|
[Instruction]
- Making the product to 35% slurry with water, adding 1% poly-vinyl alcohol, then adjusting the slurry to PH=2~3 with nitric acid.
- The second spreading, if needed, should be performed after the coatings prepared by the first spreading have been solidified and dried.
