Preparation method of multi-nuclear-shell hollow type catalyst nickel-nickel silicate-SiO2 based on methane reforming
A hollow type, catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as loss of high specific surface area
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Embodiment 1
[0026] (1) 200mL ethanol, 100mL water and 40mL orthosilicate methyl ester at 0o C and mix well. Add urea to adjust the pH to 10. After stirring for 2h, it was separated with a centrifuge. Wash with a mixture of methanol and water. Finally, 600nm silica nanoparticles were obtained at 150 o C dried for 24h.
[0027] (2) Take 2g of silicon dioxide and 0.3g of nickel nitrate, add ammonia water, and adjust the pH to 8. Put the mixed solution into an autoclave, heat to 50°C, react for 24 hours, and cool to room temperature. Centrifuge, wash with methanol, ethanol, and water, and put it into a 100-degree drying oven. Obtain nickel silicate hollow spheres (such as figure 2 , shown in 3), the specific area is 250m 2 g -1 .
[0028] (3) Disperse hollow nickel silicate spheres in ethanol (30mL), water (10mL), C n TAB (n=10) (30mg) in the mixed solution. After stirring for 30 min, aqueous ammonia (30 mL) was added. The pH was adjusted to 10, and after stirring for 30 min, 10 ...
Embodiment 2
[0032] (1) 200mL ethanol, 100mL water and 40mL methyl orthosilicate at 35 o C and mix well. Add urea to adjust the pH to 10. After stirring for 2h, it was separated with a centrifuge. Wash with a mixture of methanol and water. Finally, 600nm silica nanoparticles were obtained at 150 o C dried for 24h.
[0033] (2) Take 2g of silicon dioxide and 0.3g of nickel nitrate, add ammonia water, and adjust the pH to 11. Put the mixed solution into an autoclave, heat to 50°C, react for 24 hours, and cool to room temperature. Centrifuge, wash with methanol, ethanol, and water, and put it into a 100-degree drying oven. Obtain nickel silicate hollow spheres (such as figure 2 , shown in 3), the specific area is 250m 2 g -1 .
[0034] (3) Disperse hollow nickel silicate spheres in ethanol (30mL), water (10mL), C n TAB (n=10) (30mg) in the mixed solution. After stirring for 30 min, aqueous ammonia (30 mL) was added. The pH was adjusted to 12, and after stirring for 30 min, 10 mL...
Embodiment 3
[0038] (1) 200mL ethanol, 100mL water and 40mL methyl orthosilicate at 70 o C and mix well. Add urea to adjust the pH to 10. After stirring for 2h, it was separated with a centrifuge. Wash with a mixture of methanol and water. Finally, 600nm silica nanoparticles were obtained at 150 o C dried for 24h.
[0039] (2) Take 2g of silicon dioxide and 0.3g of nickel nitrate, add ammonia water, and adjust the pH to 13. Put the mixed solution into an autoclave, heat to 50°C, react for 24 hours, and cool to room temperature. Centrifuge, wash with methanol, ethanol, and water, and put it into a 100-degree drying oven. Obtain nickel silicate hollow spheres (such as figure 2 , shown in 3), the specific area is 250m 2 g -1 .
[0040] (3) Disperse hollow nickel silicate spheres in ethanol (30mL), water (10mL), C n TAB (n=10) (30mg) in the mixed solution. After stirring for 30 min, aqueous ammonia (30 mL) was added. The pH was adjusted to 14, and after stirring for 30 min, 10 mL...
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