Low-carbon alkane dehydrogenation catalyst preparation method
A technology for dehydrogenation catalysts and low-carbon alkanes, applied in the directions of carbon compound catalysts, catalysts, hydrocarbons, etc., can solve the problems of poor catalyst stability, difficult to control the dispersion state of active component chromium, poor catalyst activity, etc., and achieve anti-accumulation. The effect of improving carbon performance, reducing the amount of B acid, and improving utilization efficiency
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Embodiment 1
[0036] 2.23g (NH 4 ) 2 Cr 2 o 7 Dissolve in 8ml ethylene glycol, impregnate equal volume into 10g porous γ-Al 2 o 3 in powder. The powder was placed in an oven at 120°C for 4 hours, washed with deionized water, filtered, and dried at 80°C for 2 hours. 0.37gKNO 3 Dissolve in 8ml of deionized water, impregnate equal volume into the above-mentioned treated powder, dry at 80°C for 4 hours, calcined at 680°C for 5 hours, and form and sieve to obtain the catalyst, which is designated as Catalyst A.
Embodiment 2
[0040] 1.77gCrO 3 , 2.48g (NH 4 ) 2 C 2 o 4 Dissolve in 8ml deionized water, impregnate equal volume into 10g porous γ-Al 2 o 3 in powder. The powder was placed in an oven at 60°C for 6 hours, washed with deionized water, filtered, and dried at 100°C for 2 hours. 0.78gCu(NO 3 ) 2 ·3H 2 O, 1.12gFe(NO 3 ) 3 9H 2 O was dissolved in 7ml of deionized water, impregnated into the above-mentioned treated powder with equal volume, dried at 120°C for 3 hours, calcined at 700°C for 6 hours, and the catalyst was obtained by forming and sieving, which was designated as catalyst C.
Embodiment 3
[0044] 1.30gK 2 Cr 2 o 7 Dissolve in 8ml glycerol, impregnate equal volume into 10g porous γ-Al 2 o 3 in powder. The powder was placed in an oven at 140°C for 1 hour, washed with deionized water, filtered, and dried at 80°C for 4 hours. 0.33gNaNO 3 , 0.82gNi(NO 3 ) 2 ·6H 2 O was dissolved in 8ml of deionized water, impregnated into the above-mentioned treated powder with equal volume, dried at 60°C for 6 hours, calcined at 720°C for 4 hours, and the catalyst was obtained by shaping and sieving, which was designated as Catalyst E.
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