Preparation method of monolithic catalyst for catalyzing combustion of compound metal oxide
A monolithic catalyst and composite metal technology, which is applied to the preparation of catalytic combustion composite metal oxide monolithic catalysts and the preparation of Co/Mn/CeO2/honeycomb ceramic monolithic catalysts, which can solve the problems of high cost and complicated preparation process , to achieve the effects of convenient operation, simple preparation process and wide source of raw materials
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Embodiment 1
[0022] Pipette 150ml of 0.5mol / L cerium nitrate solution, add dropwise 0.25mol / LNa while stirring in the solution 2 CO 3 Solution, drop to pH value of 8, continue to stir for 0.5h, age for 12h, then filter with suction, wash with deionization until the pH value of the filtrate is 7, then dry at 100°C for 8h, and bake at 500°C for 2h to obtain the carrier honeycomb ceramic coated layer material CeO 2 .
[0023] Pipette 5ml of 0.5mol / L Co(NO 3 ) 2 solution, 10ml 0.5mol / L Mn(NO 3 ) 2 solution and 16ml of deionized water to prepare a mixed salt solution. 7.605gCeO 2 Add it into the mixed salt solution, stir for 2h, dry at 100°C for 10h, and roast at 500°C for 2h to obtain the mass content of the mixed salt of cobalt and manganese (as CeO 2 mass as a basis) is 10% powder catalyst.
[0024] Soak the honeycomb ceramics with an equal volume of deionized water for 2 hours for later use. Weigh 9g of 10wt%Co 1 mn 2 / CeO 2 Put the powder catalyst into a ball mill tank, add 51...
Embodiment 2
[0027] Pipette 150ml of 1mol / L cerium nitrate solution, add dropwise 0.5mol / l (NH 4 ) 2 CO 3 solution, drop to a pH value of 9, continue to stir for 2 hours, age for 36 hours, then filter with suction, wash with deionization until the pH value of the filtrate is 7.5, then dry at 120°C for 10 hours, and bake at 700°C for 5 hours to obtain a carrier honeycomb ceramic coating MaterialCeO 2 .
[0028] Pipette 6ml of 0.5mol / L Co(NO 3 ) 2 solution, 24ml 0.5mol / L Mn(NO 3 ) 2 solution and 32ml of deionized water to prepare a mixed salt solution. 7.531gCeO 2 Add it into the mixed salt solution, stir for 6h, dry at 120°C for 20h, and roast at 700°C for 5h to obtain the mass content of the mixed salt of cobalt and manganese (calculated as CeO 2 mass as a basis) is 10% powder catalyst.
[0029] Soak the honeycomb ceramics with an equal volume of deionized water for 4 hours for later use. Weigh 9g of 10wt%Co 1 mn 4 / CeO 2 Put the powder catalyst into a ball mill tank, add 21 g ...
Embodiment 3
[0032] Pipette 150ml of 0.5mol / L cerium nitrate solution, add dropwise 0.25mol / LNa while stirring in the solution 2 CO 3 Solution, drop to a pH value of 9, continue to stir for 1 hour, age for 24 hours, then suction filter, wash with deionization until the pH value of the filtrate is 7, then dry at 110°C for 8 hours, and bake at 500°C for 3 hours to obtain a carrier honeycomb ceramic coating MaterialCeO 2 .
[0033] Pipette 4ml of 0.5mol / L Co(NO 3 ) 2 solution, 24ml 0.5mol / L Mn(NO 3 ) 2 solution and 32ml of deionized water to prepare a mixed salt solution. 7.002gCeO 2 Add it into the mixed salt solution, stir for 4h, dry at 110°C for 12h, and roast at 500°C for 3h to obtain the mass content of the mixed salt of cobalt and manganese (calculated as CeO 2 mass as a basis) is 10% powder catalyst.
[0034] Soak the honeycomb ceramics with an equal volume of deionized water for 2 hours for later use. Weigh 10g of 10wt% Co 1 mn 6 / CeO 2 Put the powder catalyst into a bal...
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