Nickel-cobalt based catalyst as well as preparation method and application thereof
A catalyst, a nickel-cobalt-based technology, applied in the field of nickel-cobalt-based catalysts and their preparation, can solve problems such as gas blockage and disasters, and achieve the effects of cost reduction, strong carbon deposition resistance, and good reaction stability
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[0026] Example 1
[0027] Weigh 3.62g of cerium nitrate and dissolve it in water to prepare an aqueous solution of cerium nitrate; dry 10.00g of γ-Al at room temperature 2 O 3 Immerse in the prepared cerium nitrate aqueous solution for 12 hours by an equal volume immersion method; dry at 120°C for 24 hours; calcinate in an air atmosphere at 450°C for 2 hours to obtain a modified carrier.
[0028] Weigh 1.19g nickel nitrate and 1.77g cobalt nitrate and dissolve in water to prepare a mixed aqueous solution of nickel nitrate and cobalt nitrate; impregnate the prepared modified carrier in the prepared nickel nitrate and cobalt nitrate by an equal volume immersion method at room temperature In the mixed aqueous solution for 12 hours; dried at 120°C for 24 hours; calcined in an air atmosphere at 700°C for 5 hours to obtain a catalyst precursor.
[0029] The prepared catalyst precursor was reduced in hydrogen at 900°C for 2 hours.
[0030] figure 1 The XRD pattern of the catalyst prepared in...
Example Embodiment
[0036] Example 2
[0037] Weigh 3.46g of cerium nitrate and dissolve it in water to prepare an aqueous solution of cerium nitrate; dry 10.00g of γ-Al at room temperature 2 O 3 Immerse in the prepared cerium nitrate aqueous solution for 12 hours by an equal volume immersion method; dry at 120°C for 24 hours; calcinate in an air atmosphere at 450°C for 2 hours to obtain a modified carrier.
[0038] Weigh 0.28g nickel nitrate and 0.28g cobalt nitrate and dissolve in water to prepare a mixed aqueous solution of nickel nitrate and cobalt nitrate; at room temperature, the prepared modified carrier is impregnated in the prepared nickel nitrate and cobalt nitrate by an equal volume impregnation method. In the mixed aqueous solution for 12 hours; dried at 120°C for 24 hours; calcined in an air atmosphere at 700°C for 5 hours to obtain a catalyst precursor.
[0039] The prepared catalyst precursor was reduced in hydrogen at 900°C for 2 hours.
[0040] The XRD pattern of the catalyst prepared in...
Example Embodiment
[0046] Example 3
[0047] Weigh 4.42g of cerium nitrate and dissolve it in water to prepare an aqueous solution of cerium nitrate; dry 10.00g of γ-Al at room temperature 2 O 3 Immerse in the prepared cerium nitrate aqueous solution for 12 hours by an equal volume immersion method; dry at 120°C for 24 hours; calcinate in an air atmosphere at 450°C for 2 hours to obtain a modified carrier.
[0048] Weigh 10.84g nickel nitrate and 3.60g cobalt nitrate and dissolve in water to prepare a mixed aqueous solution of nickel nitrate and cobalt nitrate; at room temperature, the prepared modified carrier is impregnated in the prepared nickel nitrate and cobalt nitrate by an equal volume impregnation method. In the mixed aqueous solution for 12 hours; dried at 120°C for 24 hours; calcined in an air atmosphere at 700°C for 5 hours to obtain a catalyst precursor.
[0049] The prepared catalyst precursor was reduced in hydrogen at 900°C for 2 hours.
[0050] The XRD pattern of the catalyst prepared i...
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