Methane-carbon dioxide reforming catalyst as well as preparation method and application thereof
A reforming catalyst, carbon dioxide technology, applied in the direction of physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, catalyst carrier, etc., can solve the problems of easy sintering, decreased activity, high price, etc. Anti-sintering performance, high anti-coking, high stability effect
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[0055] The third embodiment of the present invention provides a methane carbon dioxide reforming catalyst, wherein nickel oxide is supported on the surface of the catalyst composite carrier.
[0056] The invention supports the nickel oxide on the surface of the catalyst composite carrier, which can provide the catalyst with high activity, high anti-coking and anti-sintering performance.
[0057] In one or more examples of this embodiment, in terms of mass percentage, the nickel oxide is 6-20%, and the balance is the catalyst composite carrier. When the mass percentage of nickel oxide is 8-16%, the activity of the catalyst is higher.
[0058] The fourth embodiment of the present invention provides a method for preparing a methane carbon dioxide reforming catalyst. The catalyst composite carrier is impregnated in a nickel salt solution, and then the impregnated catalyst composite carrier is calcined.
[0059] The methane carbon dioxide reforming catalyst provided by the inventi...
Embodiment 1
[0068] Dissolve 25.6g of magnesium nitrate and 56.3g of aluminum nitrate in 200mL of water and slowly add 140mL of 13.4g of sodium carbonate and 12.0g of sodium hydroxide into the mixed solution to obtain solution A. Dissolve 9.22g of zirconium nitrate and 9.31g of lanthanum nitrate in 200mL of water, use ammonia water as precipitant, adjust the pH to 9.5, and obtain solution B. Mix solution A concurrently with B, adjust the pH value to 9.5 with ammonia water, age solution C at 80°C for 36 hours; cool mixed solution C to room temperature naturally, wash, dry, and heat up in air at a rate of 2°C / min To 500°C, roast at a constant temperature for 1.5h, then increase the temperature at a rate of 2°C / min to 850°C and roast at a constant temperature for 2.5h, add a binder (dilute nitric acid) and knead, granulate, and extrude to obtain carrier D. The carrier D was impregnated in the nickel nitrate impregnation solution with a nickel mass content of 12% (based on the content of nicke...
Embodiment 2
[0071] Dissolve 51.2g of magnesium nitrate and 37.5g of aluminum nitrate in 400mL of water and slowly add 169mL of 13.4g of sodium carbonate and 14.4g of sodium hydroxide into the mixed solution to obtain solution A. Dissolve 6.65g of zirconium nitrate and 6.71g of lanthanum nitrate in 144mL of water, use ammonia water as the precipitating agent, adjust the pH to 10, and obtain solution B. Mix solution A concurrently with B, adjust the pH value to 10 with ammonia water, age solution C at 70°C for 24 hours; cool mixed solution C to room temperature naturally, wash, dry, and heat up in air at a rate of 1°C / min To 400°C, roast at a constant temperature for 2 hours, then raise the temperature at a rate of 1°C / min to 850°C and roast at a constant temperature for 0.5h, add a binder and knead, granulate, and extrude to obtain carrier D. The carrier D was impregnated in the nickel nitrate impregnation solution with a nickel mass content of 8% (based on the content of nickel oxide) for...
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