Catalyst for producing synthesis gas by catalytic partial oxidation of methane and preparation thereof
A methane catalytic part and catalyst technology, applied in the field of catalysts for synthesis gas preparation, can solve problems affecting industrial applications, deactivation, loss of active components, etc., achieve good anti-sintering and anti-carbon performance, low production cost, and selectivity sex high effect
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Embodiment 1
[0035] Dry α-alumina at 110°C for 4 hours, impregnate it with the mixed aqueous solution of cerous nitrate and calcium nitrate at room temperature for 12 hours by equal volume impregnation method, then dry at 110°C for 4 hours, and then in air atmosphere at 600°C Roast for 2 hours. The modified support was immersed in nickel nitrate solution at room temperature for 12 hours, then dried at 110°C for 4 hours, and then calcined at 600°C for 4 hours in air. A sample impregnated with nickel as the active component was immersed in a ruthenium trichloride solution for 12 hours at room temperature, then dried at 110°C for 4 hours, and then calcined at 600°C for 4 hours in an air atmosphere to obtain a catalyst precursor (I). The total mass content of cerium oxide and calcium oxide in the catalyst is 1%, wherein the molar ratio of cerium oxide and calcium oxide is 1:1, the content of nickel is 10%, and the content of ruthenium is 0.5%.
[0036] The performance test of the prepared cat...
Embodiment 2
[0039] Using magnesia-aluminum spinel as the carrier, using the equal volume impregnation method to impregnate the mixed aqueous solution of cerous nitrate and zirconium nitrate at room temperature for 12 hours, then dry at 110°C for 4 hours, and then bake at 600°C in air atmosphere for 2 hours . The prepared catalyst precursor is (II). Others are with embodiment 1.
[0040] The process of preparing the catalyst from the precursor is the same as in Example 1.
[0041] The test method of catalyst reaction performance is the same as embodiment 1, by the catalyst methane conversion rate and CO prepared by precursor (II), H 2 The selectivities are: 96.2%, 94.5%, 97.0%.
Embodiment 3
[0043] The aluminum-barium composite oxide is used as the carrier, and the others are the same as in Example 1, and the prepared catalyst precursor is (III). The process of preparing the catalyst from the precursor is the same as in Example 1.
[0044] The test method of catalyst reaction performance is the same as embodiment 1, by the prepared catalyst methane conversion rate and CO of precursor (III), H 2 The selectivities are: 96.0%, 95.0%, 96%.
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