Catalyst for soot combustion reaction and preparation method and application thereof
A combustion reaction and catalyst technology, which is applied in catalyst activation/preparation, combustion methods, chemical instruments and methods, etc., can solve the problems of reduced catalyst stability, low utilization rate, and uneven size distribution of precious metal particles, and achieves a simple and easy preparation method. high temperature sintering resistance, easy to control the preparation process
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0035] In another specific embodiment of the present invention, a kind of preparation method of the catalyst of soot combustion reaction is provided, and this preparation method can comprise the following steps:
[0036] Step 1: La 2 o 2 CO 3 The nanorods were mixed with water and stirred for 30 min to obtain a carrier liquid, wherein, La 2 o 2 CO 3 The mass ratio of nanorods to water is (0.5-2):150;
[0037] Step 2: mixing the gold precursor with water to obtain a gold precursor solution, wherein the concentration of the gold precursor solution is 0.01g / L-5g / L;
[0038] Step 3: Add the gold precursor solution dropwise into the carrier liquid, and stir for 1h-4h to obtain a mixed solution;
[0039] Step 4: After the mixed solution is dried and roasted at a stirring speed of 10 rpm, a catalyst for the soot combustion reaction is obtained.
[0040] Specifically, the gold precursors used include but are not limited to gold tetrachloride.
[0041] Specifically, the droppin...
Embodiment 1
[0061] This embodiment provides a La 2 o 2 CO 3 A method for preparing a composite material of nanorods loaded with gold nanoparticles, the method comprising the following steps:
[0062] Step 1: Preparation of La with nanorod structure 2 o 2 CO 3 , including the following steps:
[0063] a, the lanthanum nitrate of 2g is dissolved in 50mL water, obtains lanthanum nitrate solution;
[0064] B, the sodium hydroxide of 24.0g is dissolved with 110mL water, obtains sodium hydroxide solution;
[0065] c. Add the sodium hydroxide solution dropwise to the stirred lanthanum nitrate solution, and continue stirring for 0.5 h after the dropwise addition is completed;
[0066] d. Transfer the mixed solution obtained in step c to a 100mL hydrothermal crystallizer for crystallization at a constant temperature of 180°C for 12h, and cool down to room temperature naturally;
[0067] e. Centrifuge the suspension obtained in step d to obtain a precipitate, wash 3 times, dry at 80°C for 1...
Embodiment 2
[0077] This embodiment provides the La prepared in Example 1 2 o 2 CO 3 -nanorods and Au / La 2 o 2 CO 3 -The application of nanorods in the combustion of particulate matter emitted by motor vehicles, that is, to investigate the catalytic activity of the above-mentioned catalysts.
[0078] Catalyst activity evaluation method:
[0079] The activities of the above two catalysts were evaluated using a fixed-bed microreactor-gas chromatography detection system.
[0080] Specific parameters in the application process: the amount of the above catalyst samples is 100 mg, and the mass ratio of catalyst to soot particles is 10:1.
[0081] Specific steps: put the above-mentioned catalyst and soot particles weighed in a small beaker, stir evenly with a medicine spoon, make the catalyst and soot particles loosely contact, put the above mixture into a 6mm quartz reaction tube, and control the gas The flow rate is 50mL / min, the volume content of NO in the gas is 2000ppm, O 2 The volum...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Particle size | aaaaa | aaaaa |
| Length | aaaaa | aaaaa |
| Width | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More