Cobalt-based catalyst for Fischer-Tropsch synthesis and preparation method of catalyst
A technology of Fischer-Tropsch synthesis and catalysts, which is applied in chemical instruments and methods, preparation of liquid hydrocarbon mixtures, catalysts for physical/chemical processes, etc., and can solve problems such as insufficient hydrothermal stability
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Embodiment A1
[0058] This example is used to illustrate the method when all Co sources are subjected to hydrothermal reaction.
[0059] 25g ZrO(NO 3 ) 2 2H 2 O (0.094mol, as ZrO 2 Calculated as 11.5g) was dissolved in 100ml deionized water, fully stirred until it was completely dissolved; weighed 22.61g urea (0.377mol, 1.5 times the theoretical molar weight), 25.5g Co(NO 3 ) 2 ·6H 2 O (0.088mol, 5.16g as Co element) and 17.26g Al (NO 3 ) 3 9H 2 O (0.046mol, as Al 2 o 3 2.3 g) was dissolved in 40 mL of deionized water and stirred until it was completely dissolved. After the above two solutions were completely mixed and stirred, they were transferred to a stainless steel autoclave lined with polytetrafluoroethylene. React at a constant temperature of 180° C. for 15 h, and then cool to room temperature naturally. After the product was filtered, it was washed 3 times with deionized water; then dried at 120°C for 16 hours, and then calcined at 350°C for 4 hours to obtain the weight r...
Embodiment A2
[0061] This example is used to illustrate the method when all Co sources are subjected to hydrothermal reaction.
[0062] 25g ZrO(NO 3 ) 2 2H 2 O (0.094mol, as ZrO 2 Calculated as 11.5g) was dissolved in 105ml deionized water, fully stirred until it was completely dissolved; weighed 18.7g urea (0.312mol, 1.4 times the theoretical molar weight), 22.72g Co(NO 3 ) 2 ·6H 2 O (0.078mol, 4.6g as Co element) and 12.69g Al (NO 3 ) 3 9H 2 O (0.034mol, as Al 2 o 3 1.725 g) was dissolved in 60 mL of deionized water and stirred until it was completely dissolved. After the above two solutions were completely mixed and stirred, they were transferred to a stainless steel autoclave lined with polytetrafluoroethylene. React at a constant temperature of 165°C for 18h, and then cool to room temperature naturally. After the product was filtered, it was washed 3 times with deionized water; then dried at 110°C for 20 hours, and then roasted at 380°C for 3.5 hours to obtain a weight rati...
Embodiment A3
[0064] This example is used to illustrate the method when all Co sources are subjected to hydrothermal reaction.
[0065] 25g ZrO(NO 3 ) 2 2H 2 O (0.094mol, as ZrO 2 Calculated as 11.5g) was dissolved in 88ml deionized water, fully stirred until it was completely dissolved; weighed 36.57g urea (0.609mol, 2 times the theoretical molar weight), 31.27g Co(NO 3 ) 2 ·6H 2 O (0.107mol, 6.33g as Co element) and 25.88g Al (NO 3 ) 3 9H 2 O (0.069mol, as Al 2 o 3 3.45 g) was dissolved in 40 mL of deionized water and stirred until it was completely dissolved. After the above two solutions were completely mixed and stirred, they were transferred to a stainless steel autoclave lined with polytetrafluoroethylene. The reaction was carried out at a constant temperature of 150°C for 22h, and then cooled to room temperature naturally. After the product was filtered, it was washed 3 times with deionized water; then dried at 140°C for 12 hours, and then roasted at 320°C for 5 hours to...
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