Preparation method of reaction catalyst for preparing synthesis gas through methane and carbon dioxide dry reforming
A carbon dioxide and catalyst technology, which is applied in the field of preparation of catalysts for the dry reforming of methane and carbon dioxide to synthesis gas, can solve the problems of easy carbon deposition, difficult molding, and easy sintering of catalysts, etc., and achieves increased basic sites, simple preparation methods, and high efficiency. selective effect
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Embodiment 1
[0034] 1) 247.78gNi(NO 3 ) 2 ·6H 2 O was dissolved in 250mL deionized water, and then 450g γ-Al 2 o 3 (300°C drying pretreatment for 2 hours) Add to the salt solution to fully infiltrate the carrier. Sonicate for 30 minutes, let stand at room temperature for 3 hours, and then dry at 105°C. Finally, the sample was calcined in an air atmosphere at 600° C. for 4 hours to obtain 514.65 g of catalyst powder.
[0035] 2) Take 400g of the catalyst powder obtained in step 1), add 200g of 30% alkaline silica sol, 25g of sodium aluminosilicate, 30g of turnip powder and 100g of deionized water, mix well, put it dry, and put the mud on the vacuum mud mixer , and then the mixed material is extruded into 3mm strips and cut strips on a piston extruder. After natural drying, it was dried in an oven at 105°C, and finally placed in a muffle furnace at 400°C for 2 hours to obtain a shaped catalyst, which was marked as Catalyst A.
Embodiment 2
[0037] 1) 247.78g Ni(NO 3 ) 2 ·6H 2 O, 77.93g La(NO 3 ) 2 ·6H 2 O was dissolved in 280mL of deionized water, and then 420g of γ-Al 2 o 3(300°C drying pretreatment for 2 hours) Add to the salt solution to fully infiltrate the carrier. Sonicate for 30 minutes, let stand at room temperature for 3 hours, and then dry at 105°C. Finally, the sample was calcined in an air atmosphere at 600° C. for 4 hours to obtain 521.28 g of catalyst powder.
[0038] 2) get 400g step 1) the obtained catalyst powder, add 200g 30% alkaline aluminum sol, 25g water glass, 30g squash powder and 100g H 2 O, mix well, dry, practice mud on the vacuum mud mixer, and then the mixed material is extruded into 3mm strips and cut into strips on the piston extruder. After natural drying, it was dried in an oven at 105°C, and finally placed in a muffle furnace at 400°C for 2 hours to obtain a shaped catalyst, which was marked as Catalyst B.
Embodiment 3
[0040] 1) 247.78g Ni(NO 3 ) 2 ·6H 2 O, 77.50g Ce(NO 3 ) 2 ·6H 2 O was dissolved in 280mL of deionized water, and then 420g of γ-Al 2 o 3 (300°C drying pretreatment for 2 hours) Add to the salt solution to fully infiltrate the carrier. Sonicate for 30 minutes, let stand at room temperature for 3 hours, and then dry at 105°C. Finally, the sample was calcined in an air atmosphere at 600° C. for 4 hours to obtain 523.41 g of catalyst powder.
[0041] 2) Take 400g of the catalyst powder obtained in step 1), add 200g of 30% alkaline aluminum sol, 25g of sodium aluminosilicate, 20g of scallop powder, 5g of ethylene glycol and 90g of deionized water, mix well, dry, and vacuum The mud is practiced on the mud machine, and then the mixed material is extruded into 3mm strips and cut into strips on the piston extruder. After natural drying, it was dried in an oven at 105°C, and finally placed in a muffle furnace at 400°C for 2 hours to obtain a shaped catalyst, which was designate...
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