Soot removal catalyst as well as preparation method and application thereof
A catalyst and removal technology, used in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as difficult nano-scale contact, achieve great application value, improve contact, and good catalysis active effect
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Embodiment 1
[0038] Weigh 2 ml of zirconium acetate containing 15%~16% zirconium, and 0.193 g of yttrium nitrate, add 0.7 ml of ethanol and 0.7 ml of N-N dimethylformamide, stir at room temperature until completely dissolved, and then add 0.15 g of about 100 nm in diameter Carbon spheres, 0.15 g of carbon spheres with a diameter of about 400 nm and 0.18 g of polyvinylpyrrolidone were stirred to make them evenly mixed. The spinning solution was added to a disposable syringe with a spinning needle, an electric field strength of 20.5 kV was applied, the distance between the receiving screen and the spinning needle was 10 cm, and the spinning needle was 25G to obtain filamentous YSZ fibers. The fiber was heated up to 800°C at a rate of 5°C / min in an air atmosphere and kept for 2 h to prepare a porous YSZ fiber. An appropriate amount of silver salt was prepared into a solution, and an equal volume was impregnated on the surface of the fiber and the inner and outer surfaces of the macropores (Ag...
Embodiment 2
[0042] Weigh 2 ml of zirconium acetate containing 15%~16% zirconium, and 0.193 g of yttrium nitrate, add 0.7 ml of ethanol and 0.7 ml of N-N dimethylformamide, stir at room temperature until completely dissolved, and then add 0.3 g of about 400 nm in diameter Carbon spheres and 0.18 g polyvinylpyrrolidone, stirred to make it evenly mixed. The spinning solution was added to a disposable syringe with a spinning needle, an electric field strength of 20.5 kV was applied, the distance between the receiving screen and the spinning needle was 10 cm, and the spinning needle was 25G to obtain filamentous YSZ fibers. The fiber was heated up to 800°C at a rate of 5°C / min in an air atmosphere and kept for 2 h to prepare a porous YSZ fiber. After measuring the water absorption of the fiber, an appropriate amount of silver salt was prepared into a solution, and an equal volume was impregnated on the surface and the inner and outer surfaces of the macropores (Ag loading 5 wt.%). After dryin...
Embodiment 3
[0045] Weigh 2 ml of zirconium acetate containing 15%~16% zirconium, and 0.193 g of yttrium nitrate, add 0.7 ml of ethanol and 0.7 ml of N-N dimethylformamide, stir at room temperature until completely dissolved, and then add 0.3 g of about 100 nm in diameter Carbon spheres and 0.18 g polyvinylpyrrolidone, stirred to make it evenly mixed. The spinning solution was added to a disposable syringe with a spinning needle, an electric field strength of 20.5 kV was applied, the distance between the receiving screen and the spinning needle was 10 cm, and the spinning needle was 25G to obtain filamentous YSZ fibers. The fiber was heated up to 800°C at a rate of 5°C / min in an air atmosphere and kept for 2 h to prepare a porous YSZ fiber. After measuring the water absorption of the fiber, an appropriate amount of silver salt was prepared into a solution, and an equal volume was impregnated on the surface and the inner and outer surfaces of the macropores (Ag loading 5 wt.%). After dryin...
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