A kind of rare earth-based SCR catalyst for diesel vehicles and preparation method thereof
A kind of SCR catalyst, rare earth-based technology, applied in the field of rare earth-based SCR catalyst and preparation for diesel vehicles, can solve the problem of low conversion rate, achieve good low temperature performance, anti-hydrothermal aging performance, superior anti-sulfur poisoning effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0028] A method for preparing a rare earth-based SCR catalyst for diesel vehicles with good low-temperature performance and a wide operating temperature window. The specific synthesis steps are as follows:
[0029] (1) Slurry preparation: Weigh 48g of rare earth-based powder and add 20g of glutinous rice glue into 120mL of deionized water. For the rare earth-based powder, the cerium-niobium composite oxide contained is 10% of the total powder mass, the iron-copper composite oxide is 2% of the total powder mass, rhenium oxide is 0.28% of the total powder mass, and the rest is titanium Tungsten powder, the synthesis method is the traditional deposition precipitation method, and the precipitation agent is ammonia water.
[0030] (2) Slurry ball mill: The slurry is ground by a planetary ball mill with a speed of 400 rpm and a running time of 10 minutes. The final slurry particle size is D 50 is 721 nm.
[0031] (3) Add microcrystalline cellulose: add 0.068 g of microcrystalline ...
Embodiment 2
[0036] A method for preparing a rare earth-based SCR catalyst for diesel vehicles with good low-temperature performance and a wide operating temperature window. The specific synthesis steps are as follows:
[0037] (1) Slurry preparation: Weigh 48g of rare earth-based powder and add 24g of glutinous rice glue into 120mL of deionized water. For the rare earth-based powder, the cerium-lanthanum composite oxide contained is 13% of the total powder mass, the manganese-samarium composite oxide is 2.5% of the total powder mass, the rhenium oxide is 0.28% of the total powder mass, and the rest is titanium Tungsten powder, the synthesis method is the traditional deposition precipitation method, and the precipitation agent is ammonia water.
[0038] (2) Slurry ball mill: The slurry is ground by a planetary ball mill with a speed of 400 rpm and a running time of 10 minutes. The final slurry particle size is D 50 is 615 nm.
[0039] (3) Add microcrystalline cellulose: add 0.180 g of mi...
Embodiment 3
[0044] A method for preparing a rare earth-based SCR catalyst for diesel vehicles with good low-temperature performance and a wide operating temperature window. The specific synthesis steps are as follows:
[0045] (1) Slurry preparation: Weigh 48g of rare earth-based powder and add 28g of glutinous rice glue into 120mL of deionized water. For the rare earth-based powder, the cerium-tin composite oxide contained is 13.5% of the total powder mass, the copper-hafnium composite oxide is 3.1% of the total powder mass, rhenium oxide is 0.35% of the total powder mass, and the rest is titanium Tungsten powder, the synthesis method is the traditional deposition precipitation method, and the precipitation agent is ammonia water.
[0046] (2) Slurry ball mill: The slurry is ground by a planetary ball mill with a speed of 400 rpm and a running time of 10 minutes. The final slurry particle size is D 50 at 586 nm.
[0047] (3) Adding microcrystalline cellulose: adding 0.279 g of microcry...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More