Method for CO gas oxidative dehydrogenation
A carbon monoxide and oxidative dehydrogenation technology, applied in the direction of carbon monoxide and other directions, can solve the problems of high carbon monoxide loss rate, incomplete hydrogen removal, unreasonable process and catalyst, etc.
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Embodiment 1
[0018] Dissolve ferric oxalate in water, heat to 70°C, vacuum rotary impregnation in the specific surface agent of 50 m 2 / g of Al 2 o 3 pellets, and then dried at 120°C for 6 hours. SnCl 2 , magnesium nitrate and palladium nitrate were dissolved in water respectively, and the pH of the solution was adjusted to about 4 with HCl, and then the solution was heated to 80°C, impregnated on the carrier again, then dried at 140°C for 8 hours, and then heated at 450°C Calcined in air atmosphere for 4 hours, reduced in 400°C hydrogen atmosphere for 2 hours to obtain catalyst A, its composition is as shown in Table 1:
[0019] Weigh the above-mentioned prepared catalyst A into the attached figure 1 In the reactor of the shown device, the first, second and third heat exchange mediums all use saturated steam, but the difference in pressure is used to realize the difference in temperature, so as to realize the control of the catalyst bed temperature in the reactor, and the hydrogen con...
Embodiment 2
[0021] Dissolve ferric nitrate in water, heat to 80°C, vacuum rotary impregnation specific surface agent to 80m 2 / g of Al 2 o 3 pellets, and then dried at 120°C for 4 hours. Dissolve potassium chloride and ammonium chloropalladate in water, adjust the solution with HCl to make the pH value about 4, then heat the solution to 80°C, impregnate it on the carrier again, and then dry it at 140°C for 4 hours, then Calcined in air atmosphere at 450°C for 4 hours, and reduced in hydrogen atmosphere at 400°C for 2 hours to obtain catalyst B, whose composition is shown in Table 1.
[0022] Weigh the above-mentioned prepared catalyst B into the attached figure 1 In the reactor of the shown device, the first, second and third heat exchange mediums all use saturated steam, but the difference in pressure is used to realize the difference in temperature, so as to realize the control of the catalyst bed temperature in the reactor, and the hydrogen content is 8% The carbon monoxide mixed g...
Embodiment 3
[0024] Dissolve zinc nitrate, niobium nitrate, and rubidium nitrate in water respectively, vacuum rotary impregnation in a specific surface agent of 30 m 2 / g of Al 2 o 3 On the pellets, dry at 140°C for 4 hours. Dissolve ammonium chloroplatinate in ethanol solution, impregnate it on the carrier again, dry at 140°C for 4 hours, then bake in air atmosphere at 450°C for 4 hours, reduce in hydrogen atmosphere at 300°C for 4 hours, and then cool in nitrogen atmosphere to room temperature to obtain catalyst C, the composition of which is shown in Table 1.
[0025] Weigh the above-mentioned prepared catalyst C into the attached figure 1 In the reactor of the shown device, the first, second and third heat exchange mediums all use saturated steam, but the difference in pressure is used to realize the difference in temperature, thereby realizing the control of the catalyst bed temperature in the reactor, and the hydrogen content is 0.5%. The carbon monoxide mixed gas is used as the...
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